Relevant bibliographies by topics / Balance symptoms

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Balance symptoms'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Balance symptoms"

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Shepard, Neil T., Michael Smith-Wheelock, Steven A. Telian, and Anil Raj. "Vestibular and Balance Rehabilitation Therapy." Annals of Otology, Rhinology & Laryngology 102, no. 3 (March 1993): 198–205. http://dx.doi.org/10.1177/000348949310200306.

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A prospective observational study of the performance of patients enrolled in an individually customized program of habituation and balance rehabilitation physical therapy was conducted from January 1988 to January 1990. Patients ranged in age from 20 to 89 years, with a wide variety of diagnoses. Two global outcome measures — posttherapy symptom response score and pretherapy and posttherapy disability score — were developed and used to judge overall patient performance. In addition, two specific indicators — one for balance performance (dynamic posturography) and one for sensitivity to rapid head movements (motion sensitivity quotient) — were used to measure performance in these two areas. Results indicate statistically significant changes before versus after therapy for both specific measures, and 80% to 85% of the patients showed a reduction in symptoms and disability score following therapy. Analysis of variance and multiple regression analysis indicate that nature of symptoms, pretherapy disability level, history of head injury, and results on dynamic posturography were the variables most predictive of therapy outcome, while age and duration of symptoms made no difference. Other variables, such as medications and site of lesion, were found to affect the length of therapy but not the outcome.
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Teel, Elizabeth F., Stephen W. Marshall, Viswanathan Shankar, Michael McCrea, and Kevin M. Guskiewicz. "Predicting Recovery Patterns After Sport-Related Concussion." Journal of Athletic Training 52, no. 3 (March 1, 2017): 288–98. http://dx.doi.org/10.4085/1062-6050-52.1.12.

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Context: Clinicians sometimes treat concussed individuals who have amnesia, loss of consciousness (LOC), a concussion history, or certain symptom types more conservatively, but it is unclear whether recovery patterns differ in individuals with these characteristics. Objective: To determine whether (1) amnesia, LOC, and concussion history influence the acute recovery of symptoms, cognition, and balance; and (2) cognition and balance are influenced by acute symptom type. Design: Cohort study. Setting: Seven sports at 26 colleges and 210 high schools. Patients or Other Participants: A total of 8905 collegiate (n = 1392) and high school (n = 7513) athletes. Main Outcome Measure(s): The Graded Symptom Checklist, Standardized Assessment of Concussion, and Balance Error Scoring System were administered to all athletes during the preseason. To allow us to track recovery patterns, athletes diagnosed with a concussion (n = 375) repeated these assessments immediately after the injury, 3 hours postinjury, 1 day postinjury, and at 2, 3, 5, 7, and 90 days after injury. Results: Athletes who experienced amnesia had markedly greater deficits in and a slower recovery trajectory on measures of symptoms, cognition, and balance. Athletes with 2 or more prior concussions demonstrated poorer balance than those with no previous history. Otherwise, LOC and concussion history largely did not affect symptoms, cognition, or balance. Greater deficits in balance scores were observed in athletes with all symptom types. Regardless of these characteristics, most athletes recovered within 7 to 10 days. Conclusions: Athletes who experienced amnesia had more symptoms and greater deficits in cognition and balance. Symptoms and cognitive or balance deficits were not consistently associated with LOC or concussion history. Acute symptoms had a strong influence on balance scores and, to a lesser extent, on cognition. However, we found no evidence to support more cautious return-to-play decisions for athletes with these characteristics, as group recovery occurred within normal timelines. Our study supports current clinical practice: recommending that athletes be withheld from activity until they are asymptomatic, followed by a graduated return-to-play progression.
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S, Hurt, Webbe F, and LoGalbo A. "A - 12 Pre-existing Anxiety and Vestibular Symptoms: The Relationship to Balance and Reaction Time in College Athletes." Archives of Clinical Neuropsychology 36, no. 4 (May 21, 2021): 652. http://dx.doi.org/10.1093/arclin/acab035.12.

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Abstract Objective Pre-existing physical and mental health conditions can contribute to deficits in reaction time and balance among athletes. The purpose of this study was to investigate whether athletes who endorsed symptoms of anxiety and/or vestibular dysfunction would have slower reaction time and worse balance than athletes who did not. Methods College athletes (n = 361) at the Florida Institute of Technology who completed a pre-participation baseline evaluation including the Patient Health Questionnaire (PHQ-9), Sport Concussion Assessment Tool (SCAT-5) Baseline version, Balance Error Scoring System (BESS), General Anxiety Disorder Seven Item Scale (GAD-7), and Sway Balance App. Results T-tests indicated athletes who endorsed no anxiety were shown to have better balance on Sway than athletes who endorsed at least one symptom of anxiety, (t(237) = 2.73, p = 0.007, d = 0.31. Athletes who endorsed no vestibular symptoms were also shown to have better balance on Sway than those who endorsed at least one vestibular symptom, t(359) = 2.14, p = 0.03, d = 0.27. Correlational results demonstrated as symptoms of anxiety (r = −0.21, n = 361, p < 0.001) or vestibular dysfunction (r = −0.15, n = 361, p = 0.006) increase, balance performance on Sway decreases. Post-hoc Tukey indicated athletes who endorsed either anxiety or vestibular symptoms had lower scores and thus worse balance on Sway than athletes who endorsed no symptoms (p = 0.009). Conclusions Findings suggest that pre-existing anxiety and vestibular symptoms have a negative impact on balance, supporting need for their inclusion in athletic concussion testing protocols.
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Jönsson, Radi, Eva Sixt, Sten Landahl, and Ulf Rosenhall. "Prevalence of dizziness and vertigo in an urban elderly population." Journal of Vestibular Research 14, no. 1 (April 27, 2004): 47–52. http://dx.doi.org/10.3233/ves-2004-14105.

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The prevalence of balance symptoms (vertigo, dizziness, and dysequilibrium) was investigated in an epidemiological study of elderly people, the longitudinal and cross-sectional gerontological and geriatric population study from Göteborg, Sweden (H70). Three different age cohorts were studied, one at age 70, one at age 75 and one at ages 79, 82, 85, 88 and 90 years. Altogether 2011 participants answered the questionnaire at 3197 occasions. The overall prevalence of balance problems at age 70 was 36% (women) and 29% (men). Balance symptoms were more common among women than men, and increased with increasing age. At ages 88–90 years the corresponding values were 51–45%.. The most common symptom was poor balance/general unsteadiness (11–41%). Rotatory symptoms occurred in 2–17%. Other types of symptoms were less common. Precipitating factors were rising from supine to sitting position in 17–40%. Balance symptoms in a side position were uncommon, but occurred more often when tilting the head backwards (up to 14%). Signs that possibly could indicate neurological involvement were uncommon. Falls in conjuncture to dizziness, vertigo and similar symptoms occurred in 7–15%, in about equal proportions indoors as outdoors.
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FAWCETT, ANGELA J. "Balance and reading are separate symptoms of dyslexia." Developmental Medicine & Child Neurology 53, no. 4 (March 14, 2011): 294–95. http://dx.doi.org/10.1111/j.1469-8749.2010.03886.x.

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Brooker, J. E., J. M. Fletcher, M. J. Dally, R. J. S. Briggs, V. C. Cousins, G. M. Malham, R. J. Kennedy, R. I. Smee, and S. Burney. "Factors associated with symptom-specific psychological and functional impact among acoustic neuroma patients." Journal of Laryngology & Otology 128, S2 (December 19, 2013): S16—S26. http://dx.doi.org/10.1017/s0022215113003216.

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AbstractIntroduction:The main purpose of this study was to investigate the psychological and functional impact attributed to acoustic neuroma symptoms.Materials and methods:A sample of 207 acoustic neuroma patients completed a study-specific questionnaire about the severity, frequency, and psychological and functional impact of 9 acoustic neuroma symptoms.Results:The survey response rate was 56.4 per cent. All symptoms had some degree of psychological impact for the majority of participants; hearing loss was the symptom most often reported to have a severe psychological impact. The majority of respondents reported functional impact attributed to hearing loss, balance disturbance, dizziness, eye problems, headache and fatigue; balance disturbance was the symptom most often reported to have a severe functional impact. For most symptoms, psychological and functional impact were related to severity and frequency.Conclusion:Of the acoustic neuroma symptoms investigated, hearing loss and balance disturbance were the most likely to have a severe psychological and functional impact, respectively.
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Lin, Harrison W., and Hamid R. Djalilian. "The Role of Migraine in Hearing and Balance Symptoms." JAMA Otolaryngology–Head & Neck Surgery 144, no. 8 (August 1, 2018): 717. http://dx.doi.org/10.1001/jamaoto.2018.0947.

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Murdin, Louisa, and Anne G. M. Schilder. "Epidemiology of Balance Symptoms and Disorders in the Community." Otology & Neurotology 36, no. 3 (March 2015): 387–92. http://dx.doi.org/10.1097/mao.0000000000000691.

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Dávila, R., M. Zumárraga, I. Andia, E. Manero, F. Retuerto, B. Bárcena, and J. Guimón. "Dopaminergic Balance and Subtypes of Schizophrenia." British Journal of Psychiatry 154, S4 (May 1989): 57–60. http://dx.doi.org/10.1192/s0007125000295792.

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Several attempts have been made to relate subtypes of schizophrenia to dopaminergic status. For example, Crow's hypothesis states that Type I schizophrenia is characterised by positive symptoms, increased activity of the dopaminergic system, good response to neuroleptics, and no brain structural changes; and Type II by negative symptoms, reduced dopaminergic activity, poor response to neuroleptics, and brain structural changes. Testing of this hypothesis has, however, been inconclusive, and it seems more likely that both types are inter-related.
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Kondo, Masaki, Kensuke Kiyomizu, Fumiyuki Goto, Tadashi Kitahara, Takao Imai, Makoto Hashimoto, Hiroaki Shimogori, et al. "Analysis of vestibular-balance symptoms according to symptom duration: dimensionality of the Vertigo Symptom Scale-short form." Health and Quality of Life Outcomes 13, no. 1 (2015): 4. http://dx.doi.org/10.1186/s12955-015-0207-7.

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Dissertations / Theses on the topic "Balance symptoms"

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Zetterlund, Christina. "Visual, musculoskeletal, and balance symptoms in people with visual impairments." Doctoral thesis, Örebro universitet, Institutionen för medicinska vetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-57087.

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Background: Worldwide, about 300 million people have some kind of visual impairment (VI). Most people with VI are in the older age range, as visual deficits increase with age. It is not unusual that people with VI suffer both from neck pain or scapular area symptoms and reduced balance, which they consider to be symptoms of old age. However, their symptoms may not be attributable to age, but rather to poor vision. Aims: First, to identify associations between visual, musculoskeletal and balance symptoms in people engaging in near work every day and in people with VI. Second, to design and validate a suitable instrument for gathering information about visual, musculoskeletal and balance symptoms in people with VI. Third, to explore differences in perceived symptoms between VI patients and people with normal vision in cross-sectional studies and by following a group of age-related macular degeneration (AMD) patients in a longitudinal study. Fourth, to identify the most specific predictors of higher levels of visual, musculoskeletal and balance symptoms. Methods: A specific instrument was developed: the Visual, Musculoskeletal and Balance symptoms (VMB) questionnaire. Patients with VI were compared to an age-matched reference group with normal vision in three different studies in order to detect differences in self-reported symptoms between the groups. In addition, a follow-up was conducted in a group of AMD patients. Results: Patients with VI reported higher levels of VMB symptoms than controls, and this increased over time. Visual deficits and the need for visual enhancement increased the risk of VMB symptoms. Conclusion: People with VI run a potentially higher risk of VMB symptoms than age-matched controls.
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Santos, Joana Carvalho. "Balance and anxiety and depression symptoms in old age people." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14579.

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Mestrado em Gerontologia - Intervenção Comunitária
Background: Falls have a high incidence in old age people and it results in severe consequences representing a public health problem. Falls are the second worldwide cause of accidental deaths (1). The literature shows that people with high depression and anxiety symptoms have impaired balance and this is more problematic in old age people (12). Some studies have shown a relationship between depression/anxiety symptoms and balance (18) however little is known how just anxiety symptoms affect balance. It is also unknown which systems responsible for balance are more affected/preserved in this population in the absence or presence of different levels of anxiety and depression symptoms. Aim: The aims of this study were to explore: the balance differences between old age people with presence/absence of anxiety and depression symptoms and how balance may be affected/preserved by the different levels of anxiety and depression symptoms in the same population. Methods: A quantitative cross-sectional study was conducted. The protocol included socio-demographic, anthropometric and general clinical data. Balance confidence was evaluated with the Activities-specific Balance Confidence (ABC), the balance with the Balance Evaluation System Test (BESTest) and with the Berg Balance Scale (BBS). The level of significance considered was set at p<0.05. Results: 136 old age people with a mean age of 75.9±8.8 years old, participated in this study. All BESTest sections were significantly affected by the presence of anxiety or depression symptoms (p<0.001). Similar results were observed in BBS (p<0.001). However, the Reactive section presented the larger difference between present or not present (49.4±21.1 vs 84.2±14.9; p<0.001) of anxiety symptoms and present or not present (46.3±30.3 vs 88.5±15.3; p<0.001) depression symptoms. Participants’ balance confidence (ABC) was also decrease significantly in both of cases (respectively: p=0.010; p=0.001). The severity of the symptoms influenced significantly the balance (BBS (anxiety: p=0.013; depression: p=0.029) and BESTest (0.001

0.046). However, balance confidence shows not be significantly affected by the level of both of symptoms (anxiety: p=0.516; depression: p=0.274). Conclusion: The presence of anxiety and depression symptoms significantly decreases balance performance and balance confidence in old age people. Additionally, the severity of symptoms significantly decreases balance performance but do not seem to significantly impact on balance confidence.
Enquadramento: As quedas apresentam uma elevada incidência em pessoas idosas, representando um problema de saúde pública. Estas são a segunda causa de mortes acidentais a nível mundial (1). A literatura indica que pessoas com maior grau de sintomatologia ansiógena e depressiva tem o equilíbrio mais comprometido, e em pessoas idosas é ainda mais problemático (12). Alguns estudos mostram uma relação entre sintomas de depressão e ansiedade e equilíbrio (18), contudo, pouco se sabe, como apenas a ansiedade afeta o equilíbrio. É também desconhecido qual/quais são os sistemas responsáveis pelo equilíbrio mais afetados/preservados nesta população na ausência ou presença de diferentes níveis de sintomatologia ansiógena ou depressiva. Objetivos: Este estudo teve como objetivos explorar as diferenças no equilíbrio entre pessoas idosas com presença/ausência de sintomas de ansiedade e depressão e como o equilíbrio pode ser afetado/preservado pelos diferentes níveis de ansiedade e depressão na mesma população. Métodos: Foi realizado um estudo transversal quantitativo. O protocolo incluiu recolha de dados sociodemográficos, antropométricos e de clínica geral. A confiança no equilíbrio foi avaliada através da Activities-specific Balance Confidence (ABC), o equilíbrio através do Balance Evaluation System Test (BESTest) e da Berg Balance Scale (BBS). O nível de significância considerado foi de p<0.05. Resultados: Participaram neste estudo 136 pessoas idosas com uma média de idades de 75.9±8.8 anos. Todas as secções do BESTest mostraram ser significativamente afetadas quando estão presentes sintomas de ansiedade ou depressão (p<0.001). Resultados semelhantes foram observados na avaliação com a BBS (p<0.001). Contudo, a secção Respostas posturais reativas apresentou uma diferença maior aquando da presença versus ausência (49.4±21.1 vs 84.2±14.9; p<0.001) de sintomas de ansiedade e da presença vs ausência (46.3±30.3 vs 88.5±15.3; p<0.001) de sintomas depressivos. A confiança no equilíbrio (ABC) na presença de sintomas de ansiedade e depressão também diminuiu significativamente em ambos os casos (respetivamente: p=0.010; p=0.001). A severidade dos sintomas influenciou significativamente o equilíbrio (BBS (ansiedade: p=0.013; depressão: p=0.029) e BESTest (0.001

0.046) No entanto, a confiança no equilíbrio não mostrou ser afetada significativamente pela severidade de ambos os sintomas (ansiedade: p=0.516; depressão: p=0.274). Conclusão: A presença de sintomas ansiógenos ou depressivos, nas pessoas idosas, afeta significativamente o equilíbrio e a auto perceção do equilíbrio. Este estudo demonstrou também que o equilíbrio diminui, significativamente, à medida que a severidade desses sintomas aumenta, mas a auto-perceção do equilíbrio não parece ser afetada.

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Baker, Birgitta Lynne. "Family Differentiation, Family Recreation, and Symptoms of Eating Disorders." BYU ScholarsArchive, 2004. https://scholarsarchive.byu.edu/etd/155.

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The purpose of this study was to examine the relationships between family differentiation, family recreation and symptoms of eating disorders. The Family Intrusiveness Scales, the Perceived Social Support from Family, the Family Leisure Activity Profile and the Eating Attitudes Test were used. Participants were students at two large universities, one in the East and one in the West. Data were analyzed using correlation and ANCOVA. Findings supported the hypothesis that a positive relationship exists between family leisure involvement and family differentiation. In addition, a negative relationship between family differentiation and symptoms of eating disorders for individuals whose parents are not in their first marriage was indicated by the results.
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Paalanne, N. (Niko). "Postural balance, isometric trunk muscle strength and low back symptoms among young adults." Doctoral thesis, Oulun yliopisto, 2011. http://urn.fi/urn:isbn:9789514295003.

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Abstract Low back pain (LBP) is a significant health problem in all developed countries. The high prevalence of LBP in youth is a cause of concern because a link has been reported between LBP in adolescence and chronic LBP (CLBP) in adulthood. In order to prevent CLBP in adulthood potential protective factors in youth should be identified. The association between trunk muscle strength and LBP has been widely studied but the results are conflicting. The current knowledge on the role of postural balance in relation to LPB is even more controversial. The aims of the thesis were to evaluate 1) the reproducibility of the inclinometric postural balance and maximal isometric trunk muscle strength measurements, 2) the association of low back symptoms with postural balance, trunk muscle strength, and cross-sectional area and fat content of extensor muscles, and 3) muscular fitness in relation to physical activity and television viewing. The study population belongs to the 1986 Northern Finland Birth Cohort (NFBC 1986), originally consisting of 9,479 children with an expected date of birth between July 1, 1985 and June 30, 1986. A total of 874 subjects completed the physical examination at a mean age of 19 years. Of those who participated in the physical examination 554 subjects took part in magnetic resonance imaging (MRI) of the lumbar spine, including extensor muscles, at a mean age of 21 years. Reproducibility of isometric trunk muscle testing was found to be comparable to other methods that are used to measure trunk muscle function. Low back symptoms were not associated with postural balance or trunk muscle strength. Neither was there an association between LBP and the cross-sectional area or fat content of the lumbar muscles. Trunk muscles were significantly stronger in those who participated in regular physical activity and weaker in those who watched TV more than two hours daily. In conclusion, physical activity has an association with muscular fitness whereas association with TV viewing is negative independently of the level of physical activity. Single measurement of trunk muscle strength, and cross-sectional area or fat content of lumbar extensor muscles has little significance in the evaluation of the severity of low back symptoms in young adults
Tiivistelmä Alaselkäkipu on huomattava kansanterveydellinen ongelma kaikissa kehittyneissä maissa. Erityisen huolestuttavaa on alaselkäkivun yleisyys nuorilla, sillä tällä on todettu olevan yhteyttä krooniseen selkäkipuun aikuisuudessa. Jotta kroonista kipua aikuisiällä voitaisiin ehkäistä, kivulta suojaavat tekijät pitäisi pystyä tunnistamaan jo nuoruudessa. Vartalon lihasvoiman ja alaselkäkivun yhteyttä on tutkittu runsaasti viimeisten vuosikymmenten aikana mutta tulokset ovat ristiriitaisia. Tulokset seisomatasapainon yhteydestä alaselkäkipuun ovat niin ikään ristiriitaisia. Tämän tutkimuksen tavoitteena oli 1) arvioida inklinometrisen tasapainomittauksen ja isometristen lihasvoimamittausten luotettavuutta, 2) arvioida alaselkäoirein yhteyttä vartalon lihasvoimaan, seisomatasapainoon sekä ojentajalihasten rasvoittumiseen ja poikkipinta-alaan ja 3) arvioida lihasvoiman yhteyttä liikunta-aktiivisuuteen ja television katseluun. Tutkimusaineiston perustan muodostavat Pohjois-Suomen 1986 syntymäkohorttiin kuuluvat nuoret Oulun ja Lapin lääneistä, alkuperäiseen kohorttiin kuului 9,479 lasta, joiden laskettu syntymäaika oli heinäkuun 1:n 1986 ja kesäkuun 30:n 1986 välillä. Heistä Oulun Diakonissalaitoksen Liikuntaklinikalla suoritettuihin tutkimuksiin osallistui yhteensä 874 nuorta. Tutkimukseen liittyen Oulun yliopistollisen keskussairaalan radiologian klinikalla suoritettuihin selän magneetti- kuvauksiin osallistui 554 nuorta. Isometrinen lihasvoimatestaus osoittautui luotettavaksi tavaksi mitata vartalon lihasvoimaa. Alaselkäoireilla tai niiden vakavuudella ei todettu olevan yhteyttä vartalon lihasvoimaan tai seisomatasapainoon. Myöskään oireiden ja vartalon ojentajalihasten rasvoittumisen tai poikkipinta-alan välillä ei todettu olevan yhteyttä. Aktiivisemmin liikkuvien lihasvoima oli merkittävästi parempi kuin vähemmän liikkuvilla, toisaalta televisiota runsaasti katsovien lihasvoima oli televisiota vähän katsovia huonompi riippumatta siitä kuinka paljon he harrastivat liikuntaa. Aktiivisella liikunnalla on positiivinen yhteys lihasvoimaan. Toisaalta runsaalla television katsomisella on negatiivinen yhteys lihasvoimaan harrastetun liikunnan määrästä riippumatta. Yksittäisillä mittauksilla, kuten lihaksen poikkipinta-alalla tai vartalon lihasvoimalla ei todettu yhteyttä alaselkäoireiden vakavuuteen nuorilla aikuisilla
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Fridén, Cecilia. "Neuromuscular performance and balance during the menstrual cycle and the influence of premenstrual symptoms /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-996-X/.

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Emery, Amber. "The balance of intrinsic need satisfaction across contexts as a predictor of depressive symptoms in children and adolescents." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110620.

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AbstractIn their Self-Determination Theory (SDT), Deci and Ryan (1985) posit autonomy, competence, and relatedness as three intrinsic needs that contribute to well-being throughout the lifespan. Addressing the argument that the universality with which SDT makes its predictions may ignore critical developmental differences, Ryan and Deci (2000) contend that although these three needs are developmentally persistent, their relative salience may in fact vary across the lifespan. This became apparent with the finding that fulfillment of some needs was inconsequential in the prediction of depressive symptoms in a sample of children and that the experience of a balance of overall need satisfaction across important life contexts accounted for well-being over and above individual need satisfaction in a sample of adolescents (Milyavskaya et al., 2009; Veronneau, Koestner, & Abela, 2005). Despite these advances, a concrete examination of the relative salience of intrinsic needs has yet to be examined in a developmentally comparative manner. Thus, the objective of this thesis was to test the applicability of SDT across developmental periods by differentiating children and adolescents on the importance of individual needs (i.e., autonomy, competence, relatedness) and the role of balance across contexts (i.e., home, school, peers) in predicting depressive symptoms. Participants completed the Children's Intrinsic Need Satisfaction Scale (Koestner & Veronneau, 2001) and the Children's Depression Inventory (Kovacs, 1992). Results indicated that only the need for competence was significantly related to depressive symptoms in the child sample (N = 149) whereas, the satisfaction of autonomy and relatedness were significant predictors in the adolescent sample (N = 153). In both samples, need balance across contexts was a significant predictor over and above the level of satisfaction of each individual need. Implications for clinical practice and for theory will be presented.
RésuméLa théorie de l'autodétermination (TAD), développée par Deci et Ryan (1985), propose que l'autonomie, la compétence et l'appartenance sociale constituent trois besoins psychologiques qui contribuent à la sensation de bien-être chez l'individu au cours de la vie. S'attaquant à l'argument selon lequel la TAD émet des hypothèses généralisées ne tenant pas toujours compte des différences développementales, Ryan et Deci (2000) soutiennent que malgré le fait que ces trois besoins perdurent tout au long du développement, leur importance respective varie au cours de la vie. Ceci est devenu apparent à la suite de la découverte que la satisfaction de certains besoins psychologiques n'influençait pas l'apparition de symptômes dépressifs chez les enfants. De plus, il a été démontré que l'équilibre des besoins psychologiques au cours de certaines situations de la vie explique le bien-être des adolescents au-delà de la satisfaction individuelle de chacun de ces besoins (Milyavskaya et al., 2009; Veronneau, Koestner, & Abela, 2005). Malgré ces récentes découvertes, une évaluation concrète au sujet de l'importance des motivations intrinsèques à travers les différentes périodes du développement doit faire objet de recherche. Par conséquent, l'objectif de cette thèse consistait à évaluer l'applicabilité de la TAD au courant des périodes du développement afin de vérifier si l'importance des besoins psychologiques (c.-à-d. l'autonomie, la compétence et l'appartenance sociale) et le rôle de l'équilibre de ces besoins dans différents contextes (c.-à-d. à la maison, à l'école, avec les pairs) prédisent les symptômes dépressifs différemment chez les enfants et les adolescents. Les participants à l'étude ont complété deux questionnaires, soit le Children's Intrinsic Need Satisfaction Scale (Koestner & Veronneau, 2001) et le Children's Depression Inventory (Kovacs, 1992). Les résultats de cette recherche ont montré que seul le besoin de compétence était lié aux symptômes dépressifs chez les enfants (N = 149), alors que le besoin d'autonomie et le besoin d'appartenance sociale étaient des variables explicatives chez les adolescents (N = 153). Dans les deux échantillons, l'équilibre des besoins psychologiques dans différents contextes était une variable explicative au-delà de la satisfaction de chacun de ces besoins. Les répercussions de ces résultats sur la pratique clinique et la théorie seront présentées dans cette thèse.
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Bodén, Robert. "Prognostic Factors in First-Episode Schizophrenia : Five-year Outcome of Symptoms, Function and Obesity." Doctoral thesis, Uppsala universitet, Psykiatri, Ulleråker, Akademiska sjukhuset, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-113797.

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Our knowledge of prognostic factors and optimal treatment organisation in schizophrenia is incomplete. The disparity of outcome measures used has been a major obstacle for research. Increasing evidence has shown that schizophrenia is associated with increased cardiovascular mortality, development of obesity and autonomic nervous system imbalance. Assertive community treatment (ACT) has been suggested as a promising direction for organising treatment services for first-episode schizophrenia, but its long-term effect has not been evaluated. One aim of the present thesis was to investigate prognostic factors for 5-year symptomatic and functional outcome and obesity development. A further aim was to evaluate a recently proposed definition of remission and examine the long-term effects of introducing a modified ACT programme (mACT). Thus, we performed a follow-up study of all consecutive first-episode psychosis patients in Uppsala County, Sweden during 1995-2000 (n=144). In the first study we investigated the changes in a broad 5-year outcome of symptoms and function among patients presenting first time ever to psychiatric health care during 3 years before and during 3 years after the implementation of mACT. This change in the psychiatric service, however, was not followed by any long-term clinical benefits. In the second study, we examined the association between remission of eight core schizophrenia symptoms and functional outcome. Remission was strongly associated with having good function and having a higher self-rated satisfaction with life. In the third study, we explored a set of biochemical markers as predictors of weight gain and development of obesity. Haemoglobin, red blood cell count, hematocrit, γ-glutamyltransferase and creatinine were associated with the development of obesity in first-episode schizophrenia. In the fourth and final study, we tested electrocardiographic measures of autonomic imbalance as predictors of symptomatic remission. Higher heart rate and high ST and T-wave amplitudes were related to symptomatic remission, indicating that cardiac autonomic imbalance at baseline may have a prognostic value in first-episode schizophrenia.
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Scherger, Valeria Paola. "Diagnóstico económico financiero de empresas: un enfoque desde la teoría de diagnóstico fuzzy y del balanced scorecard." Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/308134.

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En aquesta investigació conjuguem la formalització i avantatges de la teoria fuzzy, la metodologia del BSC en la gestió empresarial i el patrimoni teòric de la teoria de fracàs empresarial per avançar en el desenvolupament d'un model empíric integral de diagnòstic empresarial. La revisió de la literatura mostra que malgrat els esforços en noves tècniques i aplicacions encara no s'ha aconseguit desenvolupar un model similar que tingui validesa global. En aquest cas, millorem el model de Vigier i Terceño (2008) a adaptar-lo i aplicar-lo a un sector específic d'anàlisi i provar la seva capacitat de funcionament, obtenint bons resultats. A més proposem una metodologia d'anàlisi de causes i malalties extensible a altres sectors i localitzacions, i un mètode d'agregació de causes que permet testejar la capacitat de predicció del model i l'agrupació de causes. Esperem que la formulació d'aquest model integral de diagnòstic aplicat al sector construcció serveixi als experts com a eina d'anàlisi i diagnòstic a l'hora de propiciar mesures adequades que resolguin els problemes de les empreses amb anterioritat a la cessació de pagaments i millorin la seva capacitat de adaptació a l'entorn canviant.
En esta investigación conjugamos la formalización y ventajas de la teoría fuzzy, la metodología del BSC en la gestión empresarial y el acervo teórico de la teoría de fracaso empresarial para avanzar en el desarrollo de un modelo empírico integral de diagnóstico empresarial. La revisión de la literatura muestra que a pesar de los esfuerzos en nuevas técnicas y aplicaciones superadoras todavía no se ha logrado desarrollar un modelo similar que tenga validez global. En este caso, mejoramos el modelo de Vigier y Terceño (2008) al adaptarlo y aplicarlo a un sector específico de análisis y probar su capacidad de funcionamiento, obteniendo buenos resultados. Además proponemos una metodología de análisis de causas y enfermedades extensible a otros sectores y localizaciones, y un método de agregación de causas que permite testear la capacidad de predicción del modelo y la agrupación de causas. Esperamos que la formulación de este modelo integral de diagnóstico aplicado al sector construcción sirva a los expertos como herramienta de análisis y diagnóstico a la hora de propiciar medidas adecuadas que resuelvan los problemas de las empresas con anterioridad a la cesación de pagos y mejoren su capacidad de adaptación al entorno cambiante.
n this research, the formalization and advantages of the fuzzy theory, the methodology of the Balanced Scorecard (BSC) in the entrepreneurship management, and the theoretical background of the theory of business failure are combined in order to advance in the development of a comprehensive empirical model of business assessment. The overhaul of literature shows that despite the efforts in new techniques and applications, a similar model with global validity has not been developed yet. In this case, Vigier and Terceño’s model (2008) was improved since it has been adapted and applied to a specific sector of analysis and its capacity was tested, obtaining good results. Furthermore, a methodology for analyzing causes and diseases, extensible to other sectors, is proposed along with a method for aggregating causes which allows testing the capacity of prediction of the model and the proposal of monitoring causes. It is hoped that the formulation of this comprehensive diagnostic model applied to the construction industry will help experts as a tool of analysis and diagnosis when promoting appropriate measures that solve businesses’ problems prior to the default and improve their adaptability to the changing environment.
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Carter, Tamara-Lyn. "An exploration of the relationship between unintegrated primitive reflexes and symptoms of anxiety in children between 10-13 years in the Western Cape Province of South Africa." Diss., 2020. http://hdl.handle.net/10500/27005.

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Bibliography: leaves 149-178
Anxiety Disorder is one of the most common disorders experienced by children and, if not managed, can extend into adulthood. Research has established a link between unintegrated primitive reflexes (UPR) and Learning Disorders. Learning Disorders are often co-morbid with symptoms of anxiety, however, the relationship between symptoms of anxiety and UPR have not been studied. This study aims to explore the relationship between the UPR and symptoms of anxiety in children between 10 – 13 years of age. No correlation was found between the total primitive reflex score and total symptoms of anxiety score; however, a significant relationship was found between symptoms of anxiety and the Moro, Plantar and Spinal Galant reflex. These UPR play an important role in balance. Research on balance dysfunction indicates a relationship with symptoms of anxiety. Prenatal maternal stress, common childhood illness and comorbidity with ADHD were also found to be factors in symptoms of anxiety in children.
Psychology
M.A. (Psychology)
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Books on the topic "Balance symptoms"

1

Lippincott Williams & Wilkins., ed. Signs and symptoms. Philadelphia: Lippincott Williams & Wilkins, 2006.

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Chakera, Aron, William G. Herrington, and Christopher A. O’Callaghan. Disorders of acid–base balance. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0178.

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Normal metabolism results in a net acid production of approximately 1 mmol/kg day−1. Physiological pH is regulated by excretion of this acid load (as carbon dioxide) by the kidneys and the lungs. A series of buffers in the body reduces the effects of metabolic acids on body and urine pH. For acid–base disorders to occur, there must be excessive intake (or loss) of acid (or base) or, alternatively, an inability to excrete acid. For these changes to result in a substantially abnormal pH, the various buffer systems must been overwhelmed. The pH scale is logarithmic, so relatively small changes in pH signify large differences in hydrogen ion concentration. Most minor perturbations in acid–base balance are asymptomatic, as small changes in acid or base levels are rapidly controlled through consumption of buffers or through changes in respiratory rate. Alterations in renal acid excretion take some time to occur. Only when these compensatory mechanisms are overwhelmed do symptoms related to changes in pH develop. This chapter reviews the causes and consequences of acid–base disorders.
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Springhouse. Nurse's Quick Check: Signs and Symptoms (Nurse's Quick Check). Lippincott Williams & Wilkins, 2005.

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Springhouse. Nurse's Quick Check: Signs and Symptoms, Philippine Edition (Nurse's Quick Check). Lippincott Williams & Wilkins, 2007.

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jornardolion, Alex. Vertigo Symptoms: Tinnitus - Headaches / Migraines - Loss of Balance - Spinning Head - Nausea - Sweating - Double Vision - Twitching - Walking at an Angle - Slurred Speech. Independently Published, 2020.

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The Book of Exercise and Yoga for Those with Multiple Sclerosis: Using Movement and Meditation to Improve Balance and Manage Symptoms of Pain and Fatigue. Sacred Space Health Center Inc., 2006.

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Zuxiss, Alex. Evening Primrose Oil for Your Health: Brain Function - Eczema - Relieve PMS Symptoms - Hair Care - Nerve Pain for Diabetes - Joint Pain - Skin Health - Osteoporosis - Hormone Balance - Blood Circulation. Independently Published, 2020.

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Carpenter, Lynne Christine. DEHYDRATION AND SYMPTOM DISTRESS (CHEMOTHERAPY, FLUID BALANCE). 1994.

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Albright, Robert C. Acid-Base and Electrolyte Disorders. Oxford University Press, 2012. http://dx.doi.org/10.1093/med/9780199755691.003.0474.

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The most important principle in understanding disorders of water balance is that sodium balance is determined by the adequacy of the effective circulating volume, while water balance is determined by osmoregulation and the interplay between vasopressin activity, renal concentrating and diluting ability, and thirst. Disorders of sodium balance can be determined only by clinical examination. Orthostatic hypotension implies volume depletion and sodium deficiency. Edema implies volume excess and sodium excess. Potassium is predominantly an intracellular cation. The intracellular balance of potassium is regulated by endogenous factors such as acidemia, sodium, adenosine triphosphatase, insulin, catecholamines, and aldosterone. Clinically, it is absolutely critical to follow a stepwise approach to acid-base disorders. Metabolic acidosis is defined as a primary disturbance in which the retention of acid consumes endogenous alkali stores. This is reflected by a decrease in bicarbonate. Metabolic alkalosis is defined as a primary disturbance in which plasma bicarbonate is increased. The signs and symptoms of metabolic alkalosis include weakness, muscle cramps, hyperreflexia, alveolar hypoventilation, and arrhythmias.
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Beattie, R. Mark, Anil Dhawan, and John W.L. Puntis. Cystic fibrosis. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198569862.003.0021.

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Gastrointestinal manifestations 156Management of gastrointestinal symptoms in children with CF 158Nutrition in CF 158Nutritional management 159Vitamins 160The incidence of cystic fibrosis (CF) is around 1 in 2500. Cases are diagnosed as a consequence of population screening or high-risk screening, or following presentation with clinical symptoms typical of the disorder. The basic defect is in the CFTR (cystic fibrosis transmembrane conductance regulator) protein which codes for a cyclic adenosine monophosphate-regulated chloride transporter in epithelial cells of exocrine organs. This is involved in salt and water balance across epithelial surfaces. The gene is on chromosome 7. There are multiple known mutations, the most common being ...
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Book chapters on the topic "Balance symptoms"

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Rajini, G. "Revisiting the Symptoms of Work-Life Balance: A Dependency Analysis of Employees in ICT Sector." In Advances in Intelligent Systems and Computing, 643–53. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5520-1_57.

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Murrell, T. Scott, and Dharma Pitchay. "Evaluating Plant Potassium Status." In Improving Potassium Recommendations for Agricultural Crops, 219–61. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_9.

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AbstractSeveral methods exist for evaluating plant nutritional status. Looking for visual deficiency symptoms is perhaps the simplest approach, but once symptoms appear, crop performance has already been compromised. Several other techniques have been developed. All of them require correlation studies to provide plant performance interpretations. Reflectance is a remote sensing technique that detects changes in light energy reflected by plant tissue. It has proven successful in detecting nutrient deficiencies but does not yet have the ability to discriminate among more than one deficiency. Chemical assays of leaf tissue, known as tissue tests, require destructive sampling but are the standard against which other assessments are compared. Sufficiency ranges provide concentrations of each nutrient that are considered adequate for crop growth and development. They consider nutrients in isolation. Other approaches have been developed to consider how the concentration of one nutrient in tissue impacts the concentrations of other nutrients. These approaches strive to develop guidelines for maintaining nutrient balance within the plant. All approaches require large data sets for interpretation.
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Singh, V. K., B. S. Dwivedi, S. S. Rathore, R. P. Mishra, T. Satyanarayana, and K. Majumdar. "Timing Potassium Applications to Synchronize with Plant Demand." In Improving Potassium Recommendations for Agricultural Crops, 363–84. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_13.

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AbstractPotassium (K) demand by crops is almost as high as that of nitrogen (N) and plays a crucial role in many plant metabolic processes. Insufficient K application results in soil K mining, deficiency symptoms in crops, and decreased crop yields and quality. Crop K demands vary with crop types, growth patterns, nutrient needs at different physiological stages, and productivity. Science-based K application in crops needs to follow 4R Nutrient Stewardship to ensure high yield, improved farm income, and optimum nutrient use efficiency. Studies around the world report widespread K deficiency, ranging from tropical to temperate environments. Long-term experiments indicate significant yield responses to K application and negative K balances where K application is either omitted or applied suboptimally. Limited understanding of K supplementation dynamics from soil non-exchangeable K pools to the exchangeable and solution phases and over-reliance on native K supply to meet crop demand are major reasons for deficit of K supply to crops. Research on optimum timing of K fertilizer application in diverse climate–soil–crop systems is scarce. The common one-time basal K management practice is often not suitable to supply adequate K to the crops during peak demand phases. Besides, changes in crop establishment practices, residue retention, or fertigation require new research in terms of rate, time, or source of K application. The current review assesses the synchrony of K supply from indigenous soil system and from external sources vis-à-vis plant demand under different crops and cropping systems for achieving high yield and nutrient use efficiency.
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Tomasulo, Daniel J. "A Happier Balance." In Research Anthology on Rehabilitation Practices and Therapy, 1915–35. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3432-8.ch097.

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This chapter describes how intentional well-being interventions integrate the development of character strengths and activation of positive emotional resources while reducing risks and alleviating symptoms of depression and poor health. The emergence of these interventions reaches back nearly half a century and each layer of development has led to a more robust platform for implementing these approaches. Now, based on the evidence-based principles of positive psychology, these positive interventions help to cultivate hope through a more balanced approach to well-being than traditional deficit-oriented methods of psychotherapy. This chapter looks at the history of development of these interventions and their likely next phase of development.
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Felipe, Lilian. "Concussion and Balance in Sports." In Recent Advances in Sport Science [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97024.

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Balance, spatial orientation and stable vision are imperative factors for sports or any other physical activity. It is achieved and maintained by a complex integration set of sensorimotor control systems that include sensory input from vision, proprioception or somatosensory and the vestibular system. A Sport-Related Concussion (SRC) is an individualized injury that presents a range of clinical signs and symptoms (cognitive, physical, emotional, somatic, and sleep-related). For this reason, SPR is a meaningful public health issue that involves a multidisciplinary team to properly manage it. In the sports medicine filed, Sports-Related Concussion assessment and management has become an argumentative issue. Presently, the consensus includes a combination of subjective examination, combined by multifactorial evaluation batteries that allowed to verify several components of brain function. Athletes frequently complain of dizziness and imbalance subsequent a concussion, and these symptoms can expect increased period to recover and return to play. Balance assessment is an important component of the concussion evaluation, as it can contribute with an awareness about the function of the sensorimotor systems.
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Strupp, Michael, and Thomas Brandt. "Eye movements and balance." In Oxford Textbook of Medicine, edited by Christopher Kennard, 5922–31. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0582.

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The disorders underlying vertigo and dizziness are often combined with disturbances of eye movements; reciprocal effects occur because of the anatomical and functional overlap of the vestibular and ocular motor systems. Therefore, both systems must always be tested in patients complaining of vertigo and dizziness. Using a systematic approach it is possible to make a correct diagnosis in more than 90% of patients. The history is of special importance and one should already have an idea, from the symptoms reported by the patient, what the underlying cause of the vertigo is in order to differentiate the different forms of peripheral, central and functional vestibular vertigo/dizziness and non-vestibular forms.
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Staab, Jeffrey P., Alexandre R. Bisdorff, and David E. Newman-Toker. "Vestibular Symptoms, Balance, and Their Disorders: How Will We Classify Them?" In Oxford Textbook of Vertigo and Imbalance, 171–78. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199608997.003.0016.

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Robinson, Oliver J. "The Neural Circuitry of Negative Bias, Oversensitivity to Negative Feedback, and Hyposensitivity to Reward in Major Depressive Disorder." In Cognitive Dimensions of Major Depressive Disorder, 115–28. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198810940.003.0010.

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Negative affective bias is a core symptom of major depressive disorder (MDD) that promotes and upholds the debilitating negative mood state. This chapter reviews cognitive neuroscience research exploring negative affective bias and its underlying neural circuitry. It describes converging research across clinical populations and experimental manipulations in humans suggesting that cortical and subcortical brain regions, and their interactions as circuits, are responsible for tipping the scales of information processing away from rewards and towards threats. The ultimate balance of activity within these neural circuits may therefore be responsible for negative affective bias symptoms in MDD.
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Porter, Valencia. "Ayurveda for Digestive Health and Disease." In Integrative Gastroenterology, edited by Gerard E. Mullin, Marvin Singh, Alyssa Parian, and John Clarke, 255–74. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190933043.003.0012.

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According to Ayurveda, proper digestive function is a fundamental pillar for good health, and its dysfunction can be a root cause for digestive as well as systemic disease. Stress and other lifestyle-related factors can impact digestive health and can be addressed by Ayurvedic techniques such as meditation, pranayama, yoga, and dosha balancing. Lifestyle modifications, with a balanced daily routine that is aligned with nature’s rhythms, and mindful eating of foods appropriate for a person’s constitution and state of balance are core components of an Ayurvedic approach. Herbal remedies may also be used as a complement to address both symptoms as well as the overall functioning of the individual.
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Duysens, Jacques, Geert Verheyden, Firas Massaad, Pieter Meyns, Bouwien Smits-Engelsman, and Ilse Jonkers. "Rehabilitation of gait and balance after CNS damage." In Oxford Textbook of Neurorehabilitation, edited by Volker Dietz, Nick S. Ward, and Christopher Kennard, 239–52. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198824954.003.0018.

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This chapter discusses the importance of basic and clinical science for the rehabilitation of patients with stroke or SCI (spinal cord injury). Examples are given from novel approaches in rehabilitation. Insights can be obtained by investigating normal locomotor or postural activity but it is argued that the use of more challenging locomotor tasks can provide much needed additional information. To update rehabilitation tools it is also essential to keep track of new technological developments and new assessment tools. Careful assessments, based on advanced 3D recordings of posture and gait, can assist in making proper decisions about planned interventions, aimed at alleviating some clinical symptoms such as spasticity. With respect to training, the focus here is on general principles of sensorimotor rehabilitation of gait and posture. Learning is context dependent. The consequence is that current rehabilitation approaches need to emphasize that training should be ‘task-oriented training’, and should involve the whole body.
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Conference papers on the topic "Balance symptoms"

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Endres, Ned M. "Identification of Abnormal Rotor Dynamic Stiffness Using Measured Vibration Information and Analytical Modeling." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81019.

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It is a relatively common practice to address the problem of unacceptable synchronous (1X) vibration levels (like unbalance) by applying corrective balance weights after a thorough review of vibration measurements, available engineering information, and prior balancing history of a unit if available. The balance history might include balance plane weight maps and/or balancing influence data. On occasion, other vibration malfunctions and symptoms within measured vibration data, such as misalignment, a rub, or proximity probe journal target area slow roll (sometimes called “runout” or “glitch”) can also appear to be “unbalance” but are not. A principal requirement when performing any corrective balancing of a rotor is that the fundamental synchronous rotor response of the unit should always be linear and time invariant. The fundamental synchronous rotor response is directly proportional to dynamic forces and inversely proportional to dynamic stiffness. If the principle requirements cannot be met while balancing, any further balancing of the rotor should be terminated and other root causes for the unacceptable synchronous vibration levels should be investigated. This paper will discuss a case history involving a steam turbine generator unit where excessive synchronous vibration levels were measured at the LP turbine bearings during transient and steady state operation. The initial concern was a steady increase in vibration levels at the LP turbine under steady state conditions. Prior balancing history and balancing information was reviewed and initial corrective balancing was performed. Initial correction of the unbalance proved to be inadequate, and the unit exhibited a significant change in balance influence. Since the response of the rotor to balance correction was not predictable and inconsistent with prior balancing data, alternative root causes for the unbalance symptoms were investigated. Integration of measured vibration data and numerical modeling were essential with proper identification of the root cause of the unbalance symptoms.
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Wright, W. Geoffrey, Jane McDevitt, and Kwadwo Osei Appiah-Kubi. "A portable virtual reality balance device to assess mild traumatic brain injury symptoms: A pilot validation study." In 2015 International Conference on Virtual Rehabilitation (ICVR). IEEE, 2015. http://dx.doi.org/10.1109/icvr.2015.7358591.

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Shi, Tingjia. "Correlation Between Orthostatic Hypotension, Cognition, and Balance Control Symptoms of Parkinson’s Disease with the Level of Vitamin D." In 7th International Conference on Humanities and Social Science Research (ICHSSR 2021). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/assehr.k.210519.086.

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Kornuta, Jeffrey A., Arina Korneva, and J. Brandon Dixon. "An In Vitro Model to Quantify the Effects of Fluid Shear Stress on Lymphatic Pump Function." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53692.

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Nearly all tissues are supported by the lymphatic system for a variety of functions, including the regulation of fluid balance, the removal of particulate matter from the interstitium, as well as the transport of fat from the intestine to the blood, among others. Despite these important functions, very little is known about the particular mechanisms through which the lymphatics fulfill these roles. Lymphedema, a chronic disease characterized by an inability of the lymphatics to maintain tissue homeostasis and estimated to affect over 130 million people worldwide, can result in serious clinical problems for which there are very few beneficial cures or therapies [1]. While fluid stagnation is the primary clinical manifestation of the disease, severe lymphedema is often correlated with tissue remodeling and the gross accumulation of lipid [1]. Given these symptoms, one must consider the breakdown in the lymphatic response to mechanical load (i.e. fluid balance) in order to understand the progression of the disease.
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Koehler-McNicholas, Sara R., Lori Danzl, and Lars Oddsson. "The Effect of a Lower-Limb Sensory Prosthesis on Balance and Gait in People With Peripheral Neuropathy." In 2017 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dmd2017-3466.

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Peripheral neuropathy (PN), commonly caused by diabetes mellitus, is a debilitating condition that currently affects approximately 20 million Americans. Chronic symptoms of PN often involve pain and weakness of the lower limbs, with eventual sensation loss on the plantar surfaces of the feet. According to epidemiological studies, reduced foot sole sensation has been linked to decreased standing stability [1] and an increased risk of falling [2]. Consequently, cost-effective interventions are needed to improve balance and mobility in this population. A growing body of research suggests that vibrotactile cues delivered to sensate areas of the lower limb may be an effective way to provide information about foot sole pressure to PN patients who experience poor balance control. Indeed, sensory substitution devices that provide vibrotactile feedback have been shown to aid in balance and improve postural control in various patient populations [3–7]. However, none of these technologies have been based on measurements of foot pressure nor have they been used as a balance prosthesis. The goal of this study was to investigate the effect of a new external lower-limb sensory prosthesis, the Walkasins™, on the balance and gait of individuals with PN who experience balance problems [8]. Walkasins™ consist of two parts: a leg unit and a foot pad (Figure 1). The leg unit wraps around the lower leg of the user and contains electronics for reading foot pad pressure signals, a microprocessor, and four vibrating motors that provide gentle tactile sensory cues to the front, back, medial, and lateral surfaces of the user’s leg. These cues reflect real-time foot pressure information at a location above the ankle where skin sensation is still present. The leg unit has a power button, two status LEDs, and a reset button (not shown in Figure 1). Power is supplied by a rechargeable internal battery. The foot pad is a thin consumable sole insert that can be cut to size and fit into a regular shoe. The foot pad connects to the leg unit through a physical cable. In this study, subjects performed gait and balance assessments with and without the Walkasins™ turned on in order to determine its short-term effects.
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Zeng, Hansong, and Yi Zhao. "Biomimetric Liquid State Inertial Sensor." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40587.

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Vestibular system is a motion sensing organ vital to human balance system. Patients suffering from vestibular disorders usually experience symptoms including blurred vision, vertigo and increased risks to fall. It is reported that more than 1 billion dollars are spent each year on treating such diseases. In order to accomplish balance prosthesis, an engineering motion sensing system that possesses a comparable function as the natural vestibular system is needed. One unique characteristic of human body motion is the low frequency, which is different from the resonance frequency range of conventional solid state accelerometers and gyroscopes. This makes it difficult for solid state sensors to achieve large response by the body motion. In this work, we developed a liquid state motion sensing system, whose resonant frequency is within the range of that of body motion. The sensor consists of a curved microchannel, a liquid droplet that can move freely on the channel, and microelectrodes that detect the relative movement of the droplet along the channel. The simple fabrication approach and surface treatment techniques are described in the paper. Droplet dynamics revealing the unique frequency response is theoretically investigated followed by experimental validation. Binary electrical signals are used to determine the acceleration, which minimizes the influence of external electromagnetic noises. Characterization of a single sensor for 1D measurement and an assembled sensor set for 2D measurement demonstrates that low-frequency motion can be precisely determined by the liquid state sensing system. The study of liquid state inertial sensor paves a new route of body motion detection. Considering its concise configuration, simple fabrication, miniaturized size and low cost, the sensor provides a promising candidate for balance prosthesis. It also enables the in-depth investigation of motion detection methodology.
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Rapisarda, Sebastiano, Elena Ghersetti, Damiano Girardi, Nicola Alberto De Carlo, and Laura Dal Corso. "SMART WORKING AND ONLINE PSYCHOLOGICAL SUPPORT DURING THE COVID-19 PANDEMIC: WORK-FAMILY BALANCE, WELL-BEING, AND PERFORMANCE." In International Psychological Applications Conference and Trends. inScience Press, 2021. http://dx.doi.org/10.36315/2021inpact062.

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"During lockdown and the severe restrictions aimed to combat the COVID-19 pandemic, in Italy great consideration has been given to “smart working” (SW). This term refers to a form of work characterized by the absence of time or space restrictions and an organization by phases, cycles, and objectives. The requirements for SW are: work must be carried out electronically; the tools must be adequate; performance must be measurable and focused on objectives; employees must have a suitable place to get their work done. These requirements ensure that the essential objectives of SW are attained: replacing the logic of performing tasks with that of achieving objectives; allowing everyone to manage work actively and autonomously; stimulating more decisive accountability in work, and better performance. Since the COVID-19 outbreak, action-research interventions have been conducted by private and public organizations. The private sector has endeavored to meet the requirements described above. This has not always been the case in the public sector, where largely widespread and indiscriminate use of SW has been made, not always complying with the protocols. However, even within the “emergency” limits of these experiences, SW has generally been accepted. The main advantages reported by employees are time and money saved on travel and food, in addition to improved family life. However, some problems have also emerged. These include the perception of social isolation; difficulty in disconnecting from technology; inadequacy of the tools; inadequate communication with managers. We also found that the health conditions of some “smart workers” have worsened in terms of anxiety, sleep disorders, and emotional symptoms. The data clearly show the complexity of analyses and interventions in relation to the SW phenomenon. The protection of employees’ health, especially in terms of recovery and work-family balance, appears to be particularly complex. In this context, the authors’ experience shows that online psychology has become more significant because it allows to support employees at any time. The literature highlights the growing use of online psychological support also through smartphone apps that provide effective interventions anywhere. Therefore, if, on the one hand, the requirements, objectives, and good practices of SW are to be pursued to limit the critical issues that have arisen, on the other, organizations should provide psychological support to employees even at a distance and by using appropriate technologies."
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8

Beckerle, Philipp, Norman Butzek, Rainer Nordmann, and Stephan Rinderknecht. "Application of a Balancing Filter for Model-Based Fault Diagnosis on a Centrifugal Pump in Active Magnetic Bearings." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87326.

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This paper discusses the suitability of a special discrete filter, called balancing filter, to improve the performance of model-based fault detection and fault diagnosis on a centrifugal pump in active magnetic bearings. The focus in this subject lies on the extraction of better symptoms for the fault diagnosis. The application of the balancing filter sets up on a multi-model approach which uses a model of the system for the reference state and every fault that is to be detected. These models are stimulated with the same test signals as the ones applied to the process while it is running. To compare the simulation results of the models with the process response the output error is calculated. After this the remaining residuals are used as symptoms for the fault detection. The balancing filter is used to remove the large differences within the amplitude responses of the models caused by the lowpass characteristics of the mechanical part of the system. Hence the influence of the smaller differences caused by the examined faults is weighted equally at all interesting frequencies. This leads to new residuals which are separated more clearly. This approach is used to detect common faults appearing on centrifugal pumps as dry run, incorrect installation and worn out balance pistons. The test rig used to examine the suitability of the proposed filter is a one-level centrifugal pump in magnetic bearings. The rotor of the pump is driven by an asynchronous motor at rotation speeds up to 3000 rpm. The first flexible mode of the rotor is located at 280 Hz. In the seal gap fluid-structure-interaction is appearing. The forces on the rotor are calculated based on the current applied to the bearings, while its displacement is measured by eddy current sensors integrated into the bearings. The first two natural frequencies of the system are located at about 200Hz and 500 Hz. These frequencies are shifted when a fault is occuring. In the models for the fault states this behaviour is represented. Hence the model matching the current state of the pump leads to the lowest residual. The advantage of the balancing filter is that the detection of faults becomes more reliable. Below the examined faults, the model-based concept and the design of the balancing filter are described in detail. Results from experiments on the test rig are given to show the advantages of the balancing filter.
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9

Zavisca, M. J., M. Khatib-Rahbar, H. Esmaili, and R. Schulz. "ADAM: An Accident Diagnostic, Analysis and Management System — Applications to Severe Accident Simulation and Management." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22195.

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The Accident Diagnostic, Analysis and Management (ADAM) computer code has been developed as a tool for on-line applications to accident diagnostics, simulation, management and training. ADAM’s severe accident simulation capabilities incorporate a balance of mechanistic, phenomenologically based models with simple parametric approaches for elements including (but not limited to) thermal hydraulics; heat transfer; fuel heatup, meltdown, and relocation; fission product release and transport; combustible gas generation and combustion; and core-concrete interaction. The overall model is defined by a relatively coarse spatial nodalization of the reactor coolant and containment systems and is advanced explicitly in time. The result is to enable much faster than real time (i.e., 100 to 1000 times faster than real time on a personal computer) applications to on-line investigations and/or accident management training. Other features of the simulation module include provision for activation of water injection, including the Engineered Safety Features, as well as other mechanisms for the assessment of accident management and recovery strategies and the evaluation of PSA success criteria. The accident diagnostics module of ADAM uses on-line access to selected plant parameters (as measured by plant sensors) to compute the thermodynamic state of the plant, and to predict various margins to safety (e.g., times to pressure vessel saturation and steam generator dryout). Rule-based logic is employed to classify the measured data as belonging to one of a number of likely scenarios based on symptoms, and a number of “alarms” are generated to signal the state of the reactor and containment. This paper will address the features and limitations of ADAM with particular focus on accident simulation and management.
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10

Camilleri, Lawrence, Arthur Watson, Yan Liu, and Mohammed El-Gindy. "Keep Your ESPs Running: Case Studies Exhibiting a Holistic Methodology for Run-Life Improvement." In SPE Gulf Coast Section Electric Submersible Pumps Symposium. SPE, 2021. http://dx.doi.org/10.2118/204483-ms.

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Abstract Build a more robust ESP or reduce the stress it endures? Run-life improvement requires finding the right balance to suit the local well conditions and economics. Utilizing key case studies, the paper examines how operational stress caused by low flow rates can be avoided with the correct utilization of instrumentation, surveillance, and automation thereby providing practical solutions for extending the run life of already installed ESPs. The method starts with an extensive review of ESP failure mechanisms and their causes, supported by case studies and pictures illustrating the symptoms that can be observed during dismantling. This holistic technique is supported by several case studies. The common "thread" found on most failure mechanisms is temperature rise inside the ESP, which deteriorates properties of materials, including polymer insulation, elastomer seals, and metallic parts. Heat rise is attributed to three main causes: motor thermal losses, pump hydraulic losses, and frictional heat. Case studies and data sets are provided to confirm that a paradigm shift in mitigation improvement can be achieved by automating the identification of low flow events utilizing a downhole real-time flowmeter. Three reasons are given. Firstly, it is a leading indicator, whereas surface flow meters and temperature sensors are lagging indicators due to pump-up time and heat exchange respectively. Secondly, automation enables more consistent and cost-effective identification in large ESP populations. Thirdly, it enables deeper diagnostics of the cause of low flow (i.e., gas lock versus slugging, and even the source of slugging such as horizontal lateral versus production tubing). The authors provide an exhaustive list of case studies identifying sand fallback and scale as well as low flow causes and how they can be diagnosed, including differentiation between ESP, wellbore hydraulics, and reservoir inflow causes (e.g. depletion and skin.) Over the last 30 years, improvements in design and materials have tripled ESP run lives. Therefore, many fields attain six-year average run lives and 90-day survivability of 98%. Nevertheless, economics have tightened, which has raised the bar, and therefore, many operators still suffer uneconomical run lives. Case studies indicate that the next step-change in run life improvement will require a reduction in environmental stresses by mitigating the effect of low-flow events, scale, and sand.
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