Academic literature on the topic 'Asymmetric posture'
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Journal articles on the topic "Asymmetric posture"
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Narang, Vipin. "Posturing for Peace? Pakistan's Nuclear Postures and South Asian Stability." International Security 34, no. 3 (January 2010): 38–78. http://dx.doi.org/10.1162/isec.2010.34.3.38.
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A probe of various regional power nuclear postures reveals that such postures, rather than simply the acquisition of nuclear weapons, can have differential effects on deterrence and stability dynamics. The India-Pakistan dyad is a useful candidate for exploring these various effects because the three regional power nuclear postures—catalytic, assured retaliation, and asymmetric escalation—have interacted with each other in South Asia. In particular, Pakistan's shift from a catalytic posture to an asymmetric escalation posture in 1998 against a continuous Indian assured retaliation posture allows the effects of nuclear posture to be isolated in an enduring rivalry in which many variables can be held constant. The asymmetric escalation posture may be “deterrence optimal” for Pakistan, suggesting that nuclear postures do have different effects on conflict dynamics, but it has also enabled Pakistan to more aggressively pursue longstanding revisionist preferences in India, triggering more frequent and intense crises on the subcontinent. Furthermore, the command and control procedures that Pakistan undertakes to make its asymmetric escalation posture credible amplify this instability. These procedures generate risks to the safety and security of Pakistan's nuclear assets, both at present and as India and Pakistan continue to dynamically evolve nuclear and conventional postures. The conclusions for South Asian and international security of this reality are grim.
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Ramella, M., F. Fronte, and RM Converti. "Postural Disorders in Conservatory Students: The Diesis Project." Medical Problems of Performing Artists 29, no. 1 (March 1, 2014): 19–22. http://dx.doi.org/10.21091/mppa.2014.1005.
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Prolonged and incorrect postures are one of the main risk factors for the development of musculoskeletal pathologies. The aims of this study were to study the prevalence of incorrect postures among conservatory students; to identify if the use of an asymmetric instrument represents a risk factor for developing postural disorders; and to investigate whether a correlation exists between years of study, physical activity, and prevalence of postural disorders. METHODS: The subjects were recruited among students of the Giuseppe Verdi Conservatory of Milano. All musical instruments were investigated and classified as asymmetric and symmetrical. The observed student posture was classified without instrument as “correct posture” or “postural disorder” and with an with instrument as “optimal posture” or “non-optimal posture.” While playing, the postural disorder was classified as “unchanged” or “increased.” The data were analyzed with chi-square and linear regression methods. RESULTS: Of the 148 conservatory students entered into the study, 66.2% had a postural disorder; 73.4% had a non-optimal posture, and playing an asymmetric instrument was the only variable associated (p=0.01). While playing, the postural disorder was increased in 59.2%; playing an asymmetric instrument (p=0.01) and years of practice (p=0.007) were the significantly associated variables. CONCLUSIONS: To play an asymmetric instrument exposes musicians to an increased risk of non-optimal postures and to a worsened postural disorder when present. Considering that the years of practice have an additional negative impact on postural disorders, further studies are needed to clarify the role of non-optimal postures in the development of musculoskeletal complaints among students and professional musicians.
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Granata, Kevin P. "LBD Risk Factors and the Structural Stability Tolerance of the Lumbar Spine." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 42, no. 12 (October 1998): 950–53. http://dx.doi.org/10.1177/154193129804201224.
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A model of low-back injury is presented suggesting structural instability is a risk factor in occupation injury. The purpose of this research was to document the potential for spinal buckling as a function of asymmetric and sagittal trunk angle during lifting. A biomechanical model was developed to compute the Euler stability and determine the structural tolerance of the lumbar spine in work-related postures. When applied load and associated spinal compression exceeds the structural tolerance, i.e. buckling load, the spinal column fails. Analyses demonstrate the structural tolerance is often less than material tolerance estimates, particularly in flexed and asymmetric postures. Furthermore, the structural tolerance is reduced in sagittally flexed and asymmetric lifting postures. Hence, the relation between stability and trunk posture correlated with low-back disorder (LBD) risk factors. Results suggest musculoskeletal instability may help explain the relation between LBD risk and lifting posture.
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Lang, Michael, and Virginie Orgogozo. "Distinct copulation positions in Drosophila pachea males with symmetric or asymmetric external genitalia." Contributions to Zoology 81, no. 2 (May 31, 2012): 87–94. http://dx.doi.org/10.1163/18759866-08102003.
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Left-right asymmetric genitalia have appeared multiple times independently in insects and have been associated with changes in mating positions. However, there is little experimental data on how the evolution of genital asymmetries may have affected the evolution of mating positions or vice versa. As opposed to its closely-related species, Drosophila pachea has a conspicuous asymmetry in its male genitalia external lobes, with the left lobe being 1.49 ± 0.08 (SD) times longer and thinner than the right lobe. In a laboratory stock, we found that 20% of the males possess fully symmetric lobes. To better understand how asymmetric genitalia may affect mating, we compared D. pachea copulation behaviour between these mutant males and wildtype males. We found that D. pachea wild-type males adopt a one-sided mating posture with the male always one-sided 8.55° ± 1.79° (SD) towards the female’s right side. Within 45-min recordings, all wild-type males did mate whereas 39% of symmetric mutants failed to form a stable mating complex and did not mate. In successful copulations, symmetric mutants also adopted a right-sided mating posture but the angle between male and female bodies was significantly more variable compared to wild-type males. Our results suggest that lobe size asymmetry is required for the formation of a stable mating complex and for the positioning of the male according to a precise angle on the female. However, lobe size asymmetry is not required for D. pachea right-sided mating posture.
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Kaplan, Defne Öcal. "Evaluating the Effect of 12 Weeks Football Training on the Posture of Young Male Basketball Players." Journal of Education and Training Studies 6, no. 10 (August 3, 2018): 47. http://dx.doi.org/10.11114/jets.v6i10.3423.
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Posture is the most healthy and correct placement of each region in the body when compared to the whole body. The predominantly use of one side of the body disrupts the posture. A bad posture changes the center of gravity of the body and causes chronic skeletal and muscle soreness. It is aimed to determine whether there is a rehabilitative effect of football training that does not require the use of dominant arms on posture asymmetries which may occur in the basketball which requires the use of dominant arm and leg in the study.15 male basketball players who played basketball for an average of 8 years with a mean age of 21.7 ± 1.5 years participated as volunteers. Postures of the subjects were measured with PostureScreen Mobile® before and after 12 week football trainings with lateral and anteriorly taken photographs. SPSS 22 was used program for statistical analysis. While analyzing of data Wilcoxon Test method was used and it is determined as significance level was p<0.05.After 12 weeks of football training, statistically significant differences were found in measurements taken from the anterior and lateral positions on the head, shoulder, ribcage, hip, and knee measured tilts and shifts. Estimated average head weight decreased depending on the posture of the cervical vertebrae and a significant difference was detected. Postures of subjects came close to the correct posture.Basketball is an acycle sport branch that requires the use of muscles on the dominant side. It creates an asymmetric position on the athlete due to this feature; causes shifting and tilts. In order to eliminate postural disorders that occur, the effectiveness of football training that does not require to use of the dominant side of the body has been demonstrated.
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Edling, Cecilia Wahlström, and Anncristine Fjellman-Wiklund. "Musculoskeletal Disorders and Asymmetric Playing Postures of the Upper Extremity and Back in Music Teachers: A Pilot Study." Medical Problems of Performing Artists 24, no. 3 (September 1, 2009): 113–18. http://dx.doi.org/10.21091/mppa.2009.3025.
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To play a musical instrument, such as the violin or flute, requires controlled, adequate movements performed by the arm, hand, and fingers in an asymmetric playing posture. The movements are monotonous and often of long duration, involving static and repetitive muscle work of the upper extremity and neck-shoulder muscles. This situation may lead to an increased risk of contracting musculoskeletal problems. The aim of this cross-sectional study was to investigate the relationship between physical workload, defined as playing posture and playing time per week, and musculoskeletal disorders in music teachers. A questionnaire was distributed, with items based on work-related musculoskeletal disorders and physical working conditions. The study population consisted of music teachers employed at a Swedish municipal music school. Out of 61 music teachers, 47 (77%) agreed to participate, including 28 women and 19 men. The study group was divided into two groups depending on if they had an asymmetric or symmetric upper extremity/back playing position. Of the total participants, 77% reported musculoskeletal disorders during the preceding 12 months. Female teachers reported significantly more symptoms in the neck, shoulders, and upper back than male teachers. Music teachers with an asymmetric playing posture had significantly more musculoskeletal disorders than music teachers with a symmetric playing posture. This study demonstrates that an asymmetric playing position may affect the amount of musculoskeletal disorders in the upper extremity and back.
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Oyama, Sakiko, Joseph B. Myers, Craig A. Wassinger, R. Daniel Ricci, and Scott M. Lephart. "Asymmetric Resting Scapular Posture in Healthy Overhead Athletes." Journal of Athletic Training 43, no. 6 (November 1, 2008): 565–70. http://dx.doi.org/10.4085/1062-6050-43.6.565.
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Abstract Context: Observation of the scapular posture is one of the most important components of the physical examination in overhead athletes. Postural asymmetry is typically considered to be associated with injuries. However, asymmetry in the overhead athlete's scapula may be normal due to the dominant use of the limb. Objective: To quantify the differences in resting scapular posture between the dominant and nondominant sides in 3 groups of healthy overhead athletes (baseball pitchers, volleyball players, and tennis players) using an electromagnetic tracking device. Design: Cross-sectional design. Setting: University-based biomechanics laboratory. Patients or Other Participants: A total of 43 players participated, including 15 baseball pitchers, 15 volleyball players, and 13 tennis players. All participants were healthy college-aged men. Intervention(s): Bilateral 3-dimensional scapular kinematics with the arm at rest were measured using an electromagnetic tracking device. Main Outcome Measure(s): Bilateral scapular position and orientation were measured. Between-groups and between-sides differences in each variable were analyzed using separate analyses of variance. Results: In tennis players, the scapula was more protracted on the dominant side than on the nondominant side (P < .05). In all overhead athletes, the dominant-side scapula was more internally rotated (P = .001) and anteriorly tilted (P = .001) than the nondominant-side scapula was. Conclusions: The dominant-side scapula of the overhead athletes was more internally rotated and anteriorly tilted than the nondominant-side scapula. The dominant-side scapula of the tennis players was more protracted than that on the nondominant side. Clinicians evaluating overhead athletes need to recognize that scapular posture asymmetry in unilateral overhead athletes may be normal. Our results emphasize the importance of the baseline evaluation in this population in order to accurately assess pathologic change in bilateral scapular positions and orientations after injury.
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Tamer, Funda, and Mehmet Eren Yuksel. "Giant congenital melanocytic nevus coexisting with an asymmetric posture." Our Dermatology Online 9, no. 1 (January 9, 2018): 68–70. http://dx.doi.org/10.7241/ourd.20181.19.
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Chen, Zehua, Zhen Shen, Xiangling Ye, Jiatao Wu, Huai Wu, and Xuemeng Xu. "Association between Foot Posture Asymmetry and Static Stability in Patients with Knee Osteoarthritis: A Case-Control Study." BioMed Research International 2020 (June 6, 2020): 1–8. http://dx.doi.org/10.1155/2020/1890917.
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Background. Interlimb asymmetries are considered to be closely related to knee osteoarthritis (KOA), but foot posture asymmetries in patients with KOA are scarcely reported. Objectives. We aimed to explore the asymmetrical difference in foot posture between the healthy adults and KOA patients and the relationship between foot posture asymmetry and static stability. Methods. 21 subjects suffering from KOA in the patient group (PG) and 21 healthy adults in the control group (CG) were included in this study. Foot postures on both feet were evaluated by using the foot posture index (FPI); subsequently, asymmetrical FPI scores between two feet were calculated for the two groups. Meanwhile, all the participants were tested with a standing on Dynamic and Static Balancing Instrument (Pro-kin 254P, TecnoBody Company, Italy) for bilateral stability assessment, and center of pressure (COP) parameters including sway length (SL, mm) and sway area (SA, mm2) were recorded. Results. Compared to CG, a larger percentage of supinated feet was examined in relatively severe legs (5, 23.81%), relatively moderate legs (4, 19.05%), and merged results (9, 21.43%) of PG (P<0.05), and the percentage of severe asymmetry (38.1%) was higher in the PG (P<0.05). Moreover, these relationships between the absolute value of asymmetry score and SL or SA were significant in CG and PG, the P values below 0.01. Conclusions. Foot posture asymmetry is significantly associated with static stability both in KOA patients and healthy adults, and more severe asymmetry in foot posture was observed in KOA patients, so it is critical to evaluate foot posture asymmetry for treatment and rehabilitation for patients with KOA.
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Lim, Dae-Seob, Young-Jin Kim, Kyoung-Suk Lee, and Joung-Hwan Mun. "Bio-mechanical Evaluation of Squatting Posture with Asymmetric Trunk Motion." Journal of Biosystems Engineering 36, no. 1 (February 25, 2011): 58–67. http://dx.doi.org/10.5307/jbe.2011.36.1.58.
Full textDissertations / Theses on the topic "Asymmetric posture"
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Gonzalez, Luis Javier. "Three-dimensional postural mechanics modeling of normal human subjects with nominal and asymmetric placement of the feet /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Mauricienė, Vilma. "Jaunesniojo mokyklinio amžiaus vaikų kūno laikysenos ypatumai ir sąsajos su kūno kompozicijos parametrais bei dalyvavimu sportinėje veikloje." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20060109_092510-58659.
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Introduction. Asymmetric body posture lately is more and more often diagnosed among adolescents in Lithuania also in other countries. In this stage of development, the posture undergoes many adjustments and adaptations due to changes of the body and to demanding psychosocial factors. Consequences of this widely spreading health disorder are very important as for physical health and so for social and mental wellbeing. Asymmetric body posture is considered not only one of the most common adolescents’ musculoskeletal system disorders (Juškelienė, 1996; Lindišienė, 1999; McEvoy, 2005) but also one of the possible signs or reasons of scoliosis (Nissinen et al., 1993; Hazebroek et al, 1992). Posture asymmetry may influence reduced musculoskeletal system functioning. It was established negative influence of asymmetric posture on cardiovascular system’s function (Sucato, 2003), pulmonary function (Lin, 2001), urogenital system’s function (Mohanty, 2000), nervous system’s functioning (Wiggins, 2003). Also children with posture disorders more often have insecurity and inferiority feelings (Saccomani, 1998), and more often suffer from depression and anxiety episodes (Norris, 1992). The normal development of spine curvatures depends on the interaction between heritable growth factors and the mechanical environment in which the spine grows. Sedentary life style among schoolchildren decreases their physical and social wellbeing. The research works emphasize, that proper physical activity... [to full text]
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Marchetti, Paulo Henrique. "Investigações sobre o controle motor e postural nas assimetrias em membros inferiores." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-09042010-160804/.
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Durante diferentes atividades cotidianas ou esportivas o ser humano é submetido a desafios unilaterais que podem estar relacionados à performance de uma tarefa específica ou a própria manutenção de sua postura. Portanto, é natural o desenvolvimento motor de um membro em relação ao outro para tarefas específicas, desde que estas sejam repetidas de forma não simétrica. Desta forma, pode-se supor que sujeitos que possuam maiores estresses físicos unilaterais apresentem maior probabilidade em desenvolver assimetrias funcionais e morfológicas. O presente trabalho apresenta três diferentes experimentos visando investigar as assimetrias funcionais e morfológicas relacionadas ao controle de movimento para tarefas dinâmicas e estáticas em diferentes condições e grupos. O primeiro experimento visou investigar as diferenças, entre os membros inferiores, no controle de movimento entre sedentários e atletas, utilizando para isto a postura ereta quieta e o salto com contra-movimento nas condições bipedais e unipedais. O segundo experimento visou investigar o efeito da fadiga neuromuscular unilateral e bilateral no controle de movimento, entre membros, durante o salto com contra-movimento e a postura ereta quieta bipedal. O terceiro experimento objetivou investigar o efeito prolongado da temporada esportiva no controle de movimento, entre membros, de atletas, utilizando o salto com contra-movimento e a postura ereta quieta nas condições unipedal e bipedal. Inicialmente, o presente trabalho concluiu que não parece existir relação entre as diferenças antropométricas e funcionais. Indivíduos sedentários e atletas possuem diferenças entre os membros inferiores, entretanto supõe-se que os mecanismos relacionados à tais fenômenos não sejam os mesmos, como no caso dos sedentários, onde as assimetrias poderiam estar relacionadas ao pobre controle de força, sinergismo e padrão de coordenação.. Analisando as diferenças entre sedentários e atletas foram observadas semelhanças em relação ao nível de assimetria para algumas variáveis analisadas. Deve-se considerar que os atletas analisados estavam no início da temporada esportiva, e possivelmente sem grande influência dos efeitos do treinamento prolongado. Para testar a hipótese do efeito prolongado, o terceiro experimento foi realizado e observou-se que a temporada esportiva não afetou todas as variáveis relacionadas ao controle de movimento estático e dinâmico em atletas e os maiores efeitos foram verificados durante as tarefas bipedais. Além disto, a fadiga neuromuscular também influenciou o controle de movimento em sedentários, produzindo ajustes compensatórios em algumas variáveis, principalmente nos ângulos articulares. Entretanto, as assimetrias previamente observadas não parecem serem alteradas durante as diferentes condições de fadiga neuromuscular. Para a tarefa dinâmica bipedal, observou-se que para todas as variáveis analisadas (ângulos articulares, parâmetros de desempenho e atividade muscular) apresentaram assimetrias. Curiosamente, se observa tendência à maior ativação do membro contra-lateral em função do membro fatigado. Portanto, o presente estudo ressalta o efeito do nível de condicionamento, o efeito da fadiga e do treinamento prolongado no controle de movimento dos membros inferiores em tarefas com diferentes demandas motoras bipedais e unipedaisThe human body is exposed to different unilateral challenges during different daily and sportive tasks. These challenges may either be related to specific-task performance or posture maintenance. Thus, it is natural the increase of motor control in one limb related to another during specific tasks and movements. It can be assumed that individuals exposed to higher physical unilateral stress show greater probability to develop functional and morphological asymmetries. The present study shows three different experiments in order to investigate the functional and morphological asymmetries related to the motor control for dynamic and static tasks in different conditions and groups. The first experiment aimed to investigate the differences between the lower limbs, related to the motor control between sedentary and athletes during two tasks: quiet stance and countermovement jump in bi- and unipedal conditions. The second experiment aimed to investigate the effect of neuromuscular fatigue on uni- and bilateral tasks related to the motor control between lower limbs during both double-leg tasks: countermovement jump and quiet stance. The third experiment aimed to investigate the effect of prolonged sportive season in motor control, between lower limbs, during two tasks: quiet stance and countermovement jump in bi- and unipedal conditions. We concluded that there was no correlation between the anthropometric and functional asymmetries. Both sedentary and athlete groups had differences between the lower limbs in several variables, however it is assumed that the mechanisms related to such phenomena are not the same. There were similarities between sedentary and athlete groups related to the level of asymmetry for some variables. We must consider that the athletes were analyzed at the beginning of the sportive season, without the training influence. To verify the prolonged effect hypothesis, the third experiment was conducted and it was observed that the sportive season did not affect all the variables related to the motor control and the greatest effects were observed during the bipedal tasks. In addition to that, the neuromuscular fatigue influenced the control of movement in the sedentary group, showing compensatory adjustments in some variables, especially in the maximal joint angles. However, we observed that the asymmetries did not change during different neuromuscular fatigue conditions. During the bipedal dynamic task it was observed asymmetries in all variables (joint angles, performance parameters and muscle activity). Interestingly, it was also observed the trend to higher activation of the contra-lateral lower limb during the fatigued limb. So, this study highlights the effect of the conditioning levels, the neuromuscular fatigue effect and the prolonged training to the motor control of the lower limbs in different tasks and conditions
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Pope, James Brian. "Asymmetrical Sensory and Motor Patterns in Individuals with Inverted and Noninverted Handwriting Postures." W&M ScholarWorks, 1988. https://scholarworks.wm.edu/etd/1539625443.
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Rico, Janina Manzieri Prado. "Assimetrias posturais, demandas musculares e gasto energético em jovens e idosos na postura ereta." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-11052015-103821/.
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A permanência em pé por um determinado período de tempo exige que os indivíduos produzam periodicamente mudanças posturais, que podem favorecer a adoção de posturas mais assimétricas. Diante da deterioração do sistema de controle postural, é possível que idosos tenham uma dificuldade em permanecerem assimétricos em atividades do cotidiano. Em adição, variações no padrão de ativação muscular podem aumentar o gasto energético e levar os idosos a fadiga, o que resulta em sérias consequências como aumento no risco de quedas. Acredita-se que mudanças posturais durante a postura relaxada ocorram distintamente em adultos jovens e idosos, podem exigir esforços musculares variados e assim influenciar no gasto energético. O presente estudo investigou as assimetrias posturais, ativações musculares e gasto energético em adultos jovens e idosos saudáveis na postura ereta. Cinquenta e três jovens e 16 idosos permaneceram em diferentes posturas enquanto registrou-se as assimetrias na distribuição de peso ao longo do tempo (ADPm). Todos os idosos e 12 jovens submeteram-se ao registro eletromiográfico para análise dos padrões de ativação muscular de músculos da coxa e perna, e 7 indivíduos de cada grupo foram submetidos ao registro de gases para análise do gasto energético, consumo de oxigênio (VO2), quociente respiratório (R) e medida de frequência cardíaca. Os idosos apresentaram dificuldade na transferência de peso em posturas mais assimétricas e ambos os grupos apresentaram ligeira assimetria na postura ereta quieta (em torno de 5±4% de ADPm). Na postura relaxada a maior parte do tempo os indivíduos permaneceram em faixas de pequenas assimetrias, seguido de um tempo menor em posturas significativamente assimétricas. Em geral, as ativações musculares foram maiores em idosos, porém eles foram capazes de recrutar músculos de modo similar aos jovens. O aumento da atividade do músculo gastrocnêmio foi proporcional às posturas mais assimétricas em ambos os grupos. O gasto energético não sofreu grandes variações em condições de simetria ou assimetria posturais em jovens e idosos, porém parece que o aumento do gasto energético nos idosos está relacionado com o aumento da atividade muscular, o que poderia justificar a adoção de posturas menos assimétricas por parte desses indivíduos. Os resultados do presente estudo levantam a questão da possibilidade de haver maior gasto energético, principalmente em idosos, e abre novas possibilidades para que futuros estudos possam compreender a demanda metabólica envolvida na manutenção da postura eretaTo remain standing for a certain period of time we periodically produce postural changes, which may favouring the adoption of more asymmetric postures. In face of the postural control system deterioration, it is possible that older people find it difficult to adopt more asymmetrical postures during daily life activities. In addition, changes in muscle activation pattern may increase energy cost to stand in asymmetric posture, which would lead to muscle fatigue and as consequence increase in fall risk in this population. Thus, postural changes during relaxed postures and the muscular demand necessary to perform such changes may differ among young and older adults, resulting in different energy cost. The present study investigated body weight asymmetries, muscle activations and energy cost in healthy young and elderly adults during sanding tasks with different constrains. Fifty-three young and sixteen elderly subjects remained at different positions while we recorded the body weight asymmetry over time (ADPm). All the elderly participants and twelve young adults undergone to electromyographic record of the thigh and leg muscles, and 7 subjects in each group to gas record in order to quantify the energy cost, oxygen consumption (VO2) and respiratory quotient (R) and registered heart rate. During quiet standing task, both age groups showed a slight and similar WDA (mean values around 5%). However, the elderly had difficulty in maintaining more asymmetric postures - they were less asymmetrical than young in tasks that required great WDA. In the relaxed position, most of the time the subjects remained in small asymmetry ranges, followed by a shorter period in more asymmetric postures. In general, muscle activation level was higher in the elderly, but they were able to recruit muscle in a similar way to young subjects. In addition, gastrocnemius activity increased proportionally to body weight support in both age groups - it was greater in the supportive limb in the most asymmetric postures. Although in this study the energy cost was not significantly affected by the asymmetry in body weight distribution in young and old individuals, it seems that the increased energy cost in the elderly is associated with an increase in muscle activity, which might explain the adoption of less asymmetric postures by these individuals. The results of this study raise the question of the possibility of higher energy expenditure in more asymmetric postures, especially in the elderly, and opens new possibilities for future studies to understand the metabolic demands during upright standing
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Ellwood, Julie A. "The relationship between Infantile Postural Asymmetry and unsettled behavior in babies : a quantitative observational study." Thesis, University of Bedfordshire, 2016. http://hdl.handle.net/10547/615506.
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Background: Unsettled infant behaviour is a common problem of infancy without known aetiology or effective management, and it is costly in both social and economic terms. Some osteopaths propose that musculoskeletal dysfunction contributes to unsettled infant behaviour, yet reported improvement following osteopathic treatment is anecdotal. A primary issue is the absence of a measurement tool to test musculoskeletal dysfunction in infants. Aims and Objectives: This research aimed to investigate: the reliability and validity of the infantile postural asymmetry (IPA) measurement scale; whether there was a relationship between IPA and unsettled infant behaviour as measured by the Revised Infant Behavior Questionnaire – short form (IBQ-Rs); and whether any relationship between IPA and unsettled infant behaviour was mediated by, or confounded with, the demographic variables of age, sex, birth weight and weight gain in twelve- to sixteen-week-old infants. Methods: Fifty-eight infants aged twelve- to sixteen-weeks-old were recruited through public health clinics, and their behaviour was assessed using the parent-report IBQ-Rs. Infantile asymmetry was measured using observer ratings of spontaneous movements in the IPA scale. A quantitative cross-sectional observational design was used to investigate the relationship between IPA and unsettled behaviour. Results: An association between unsettled behaviour and musculoskeletal dysfunction was not found in twelve- to sixteen-week-old infants using the IPA measurement scale. Ratings for the trunk convexity parameter of the IPA scale were unreliable and excluded from statistical analysis. A significant difference between high and low cervical rotation deficit groups for Surgency was detected in female babies and needs further examination. Some subsets of the IBQ-Rs were unstable when measuring behaviour in twelve- to sixteen-week-old infants. Future research targeting infants younger than twelve-weeks-old, and presenting with unsettled behaviour, is indicated. Conclusion: A causal relationship between unsettled infant behaviour and musculoskeletal dysfunction is still unproven. The literature suggests benefits associated with a consistent approach to providing parents with information, support and advice on normal behaviour patterns and optimal handling of infants. Non-specific effects cannot be ruled out in reported improvements following osteopathic treatment. Management strategies require early implementation and a multidisciplinary approach. The absence of common terminology in infant behaviour problems is an obstacle in cross-professional communication. A role for osteopathy may be in developing a shared language to facilitate management and research, and to examine the importance of positioning and handling practices on infant asymmetry and the relationship with the musculoskeletal system.
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Bonuzzi, Giordano Márcio Gatinho. "Aprendizagem de uma tarefa de controle postural de indivíduos pós-acidente vascular encefálico: efeitos da especialização hemisférica." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/39/39132/tde-20022015-102221/.
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Introdução: A literatura científica tem atribuído grande relação entre o hemisfério direito e o controle postural, a partir disto, este trabalho buscou investigar a aprendizagem de uma tarefa de controle postural em indivíduos pós- Acidente Vascular Encefálico (pós-AVE). Participantes: Vinte indivíduos pós-AVE foram selecionados, dez indivíduos com o hemisfério direito lesado (Grupo lesado a direita - LD) e dez indivíduos com o hemisfério esquerdo lesado (Grupo lesado a esquerda - LE). Também foram selecionados vinte indivíduos saudáveis pareados por idade para a condição controle (Grupo controle - GC). Metódo: Como tarefa a ser aprendida foi utilizado o jogo Table Tilt do vídeo game Nintendo Wii, provido do sistema balance board. Os participantes foram posicionados em pé sobre a plataforma, e a partir da movimentação do seu centro de pressão houve a possibilidade de controlar um Avatar para alcançar a meta de mover algumas bolas em direção a trajetos específicos. O delineamento foi constituído de um pré-teste com cinco tentativas, seguido de quatro blocos de prática de trinta minutos, sendo que cada bloco foi praticado em dias consecutivos e, posteriormente, um pós-teste com cinco tentativas. Após uma semana sem prática, houve um teste de retenção com características idênticas aos testes anteriores. As variáveis dependentes foram a pontuação do jogo (representando o nível de complexidade alcançado na tentativa), o número de bolas certas (representando a meta da tarefa), e bolas erradas (representando o erro). Para cada variável dependente foi realizado o teste Anova two way (3 grupos x 3 momentos), seguido do post hoc de Tukey. Além disso, para investigar a relação entre complexidade e erro foi conduzido o teste de correlação de Pearson entre a pontuação do jogo e o número de bolas erradas. Resultados: Para a medida que representou a meta da tarefa (número de bolas certas), houve diferença entre LE e o GC (p=0,0001) e LD e GC (p=0,01), todos os grupos melhoraram seu desempenho entre o pré-teste e o pós-teste (p=0,0001), e igualdade entre o pós-teste e o teste de retenção (p=0,86). Para a medida que representou o nível de complexidade (pontuação), houve diferença intergrupo apenas entre LD e GC (p=0,0005), indicando a dificuldade do LD em desempenhar a tarefa em altos níveis de complexidade. Para a medida que representou o erro (bolas erradas), não houve diferença intergrupo (p=0,66), e todos os grupos aumentaram o erro em função da prática (p=0,00), por causa do aumento de complexidade. Conclusão: O lado da lesão não afetou a aprendizagem de uma tarefa de controle postural em indivíduos pós- AVE. No entanto, a habilidade em desempenhar a tarefa em níveis superiores de complexidade faz com que os pacientes pós-AVE com lesão no hemisfério direito sejam mais impactados se comparados com lesão a esquerda. A complexidade da tarefa mostrou-se um aspecto crucial na aprendizagem de indivíduos pós-AVE, pois determinou o aumento do número de erros, ressaltando a diferença entre indivíduos com lesão a direita e a esquerda em uma tarefa de controle posturalIntroduction: The scientific literature has attributed great relationship between the right hemisphere and postural control, with this, there was an interest in a research on the task postural control learning in post-Stroke individuals, according to the affected hemisphere. Participants: Twenty post stroke individuals were selected, ten patients with damage on the right hemisphere (Right Injury Group - RIG), ten subjects with damage on the left hemisphere (Left Injury Group - LIG). Twenty healthy subjects paired by age were selected to the control conditions (Control Group - CG). Methods: For the task to be learned, it was used the Nintendo Wii game, Table Tilt, which provides the system balance board. The subjects were standing on the platform, and with the movement of the center of pressure was possible to control the Avatar to achieve the goal of moving the balls into specific holes. The design consisted of a pre-test with five attempts, then four blocks of practice, which takes thirty minutes each. The acquisition blocks were practiced on consecutive days, and posteriorly a post-test was done with five attempts. A week later, without practice there was the retention test with identical characteristics to the previous tests. The dependent variable was the score of the game (representing the level of complexity reached in the attempt performed), the number of certain ball (representing the task\'s goal) and erroneous ball (representing the error). For each dependent variable was performed the ANOVA two-way test (3 groups x 3 moments) followed by the post hoc of Tukey. Furthermore, in order to investigate the relationship between complexity and error, it was also conducted the Pearson correlation test between the score of the game and the number of erroneous balls. Results: In the case of the goal task (certain number of balls), there was difference between the LIG and the CG (p = 0.0001) and RIG and CG (p=0,01), all groups improved their performance between pre-test and post test (p=0,0001), and equality between the post test and the retention test (p=0,86). In relation to the measure that represented the complexity level (score), there was only intergroup difference between RIG and CG (p=0,0005), indicating the difficulty of RIG to perform the task on higher levels of complexity. Finally, representing the measure error (erroneous balls), there was no intergroup difference (p=0,66), all groups increased the error as a function of practice (p=0,00), this was due to the increased complexity. Conclusion: The side of the lesion does not affect the task postural control learning in post stroke individuals. However, the ability to perform the task on higher levels of complexity makes the right hemisphere damage post-stroke patients negatively different from the damaged left hemisphere ones. The complexity of the task turned out to be a crucial aspect on the post-Stroke learning, since it determined the increase of error, highlighting the difference between rightdamaged individuals and left-damaged ones
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Hendershot, Bradford Donald. "Alterations and Asymmetries in Trunk Mechanics and Neuromuscular Control among Persons with Lower-Limb Amputation: Exploring Potential Pathways of Low Back Pain." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/28668.
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Low back pain (LBP) is a substantial secondary disability among persons with lower-limb amputation (LLA). Abnormal mechanics of movement subsequent to LLA may increase the stability demands on the spinal column, and repetitive exposures to such abnormal movements may alter trunk passive properties and/or the coordination of surrounding trunk muscle responses. Further, preferential use of the sound limb may lead to asymmetries in these behaviors. Spine biomechanics (e.g., loading and stability) are substantially influenced by trunk passive properties and neuromuscular control, and alterations in these behaviors are associated with abnormal mechanics of the spinal column and an increased LBP risk. However, there is limited evidence regarding whether prolonged repeated exposures to abnormal gait and movement resulting from LLA and subsequent repeated use of a prosthetic device affect these trunk behaviors.
Eight males with unilateral LLA and a matched sample of non-amputation controls completed three studies in which several measures of trunk passive properties, neuromuscular control, and spine biomechanics were quantified using laboratory experiments and biomechanical analyses. Each study involved a distinct task to investigate potential alterations and/or asymmetries in trunk passive properties and neuromuscular control. The first study used a seated balance task to assess trunk postural control and stability. The second study used multidirectional trunk perturbations to assess trunk mechanical and neuromuscular behaviors. Finally, the third study used controlled quasi-static trunk movements to assess load-sharing mechanisms between active and passive low back tissues.
Significant alterations and asymmetries in trunk passive properties and trunk neuromuscular responses were present among participants with LLA, specifically reduced and asymmetric trunk stiffness and reflex response; decreased and asymmetric passive contributions to trunk movements; and increased trunk muscle activities. Significant increases in trunk postural sway and trunk muscle activities were also present during seated stability measures. Such alterations in these behaviors may be a result of repetitive exposures to abnormal gait and movement subsequent to LLA and the use of a prosthetic device, and could play a contributing role in the development of LBP in this population. Future work should investigate the temporal relationship between altered trunk behaviors and repeated exposure to abnormal gait and movement subsequent to LLA, to better identify critical years for rehabilitation and preventative care.Ph. D.
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Jernberg, Grönlund Annika. "Posturala asymmetrier och smärta hos barn med cerebral pares : En populationsbaserad registerstudie." Thesis, Umeå universitet, Avdelningen för fysioterapi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-167463.
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Sammanfattning: Introduktion: Nedsatt förmåga att stabilisera kroppen leder ofta till asymmetrisk kroppshållning som ökar risken för vävnadspåverkan som kan leda till deformiteter och kontrakturer hos barn med cerebral pares (CP). Smärta är vanligt förekommande vid CP och kan komma sekundärt till kontrakturer och felställningar. Syfte: Undersöka samband mellan posturala asymmetrier i ryggliggande och smärta hos barn med cerebral pares i åldrarna 7-15 år samt kontrollera om detta påverkas av ålder, kön eller grovmotorisk funktionsnivå. Metod: Tvärsnittstudie med populationsbaserad inklusion, 3123 barn i åldrarna 7-15 år med cerebral pares (60 % pojkar) ifrån det nationella kvalitetsregistret för cerebral pares (CPUP). Postural Albility Scale (PAS) användes för att bedöma asymmetrier. Förhållandet mellan asymmetrier och smärta analyserades med univariat och multivariat logistisk regression och redovisades med oddskvot (OR). Resultat: Barn med svåra asymmetrier i ryggliggande hade signifikant ökad risk för smärta, sagitalt (p=0.001) (OR=1.85, 95 % av CI 1.29-2.65), frontalt (p=0.002) (OR=1.72, 95 % av CI 1.21-2.44) och sammanslaget frontalt och sagitalt (p≤0.001)(OR=1.99, 95 % av CI 1.52-2.62). Sambandet var oberoende av ålder, kön och grovmotorisk funktionsnivå. Barn med mycket begränsad grovmotorisk funktionsnivå var överrepreseterade bland de med svåra asymmetrier och smärta. Slutsats: Tydliga samband framkom mellan svåra asymmetrier i ryggliggande och smärta hos barn 7-15 år med CP. Barn med kraftigt nedsatt grovmotorisk förmåga var överrepresenterade i gruppen med svår asymmetri och smärta. Ett sätt att förebygga smärta kan vara att uppmärksamma asymmetrier och vidta åtgärder för att minska dess fortskridning. Svåra asymmetrier i ryggliggande bör ses som en indikation att utreda smärta hos barn med CP.
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Anand, Vijay, John G. Buckley, Andy J. Scally, and David B. Elliott. "Postural stability changes in the elderly with cataract simulation and refractive blur." Association for Research in Vision and Ophthalmology (ARVO), 2003. http://hdl.handle.net/10454/4137.
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PURPOSE. To determine the influence of cataractous and refractive blur on postural stability and limb-load asymmetry (LLA) and to establish how postural stability changes with the spatial frequency and contrast of the visual stimulus.
METHODS. Thirteen elderly subjects (mean age, 70.76 ± 4.14 [SD] years) with no history of falls and normal vision were recruited. Postural stability was determined as the root mean square [RMS] of the center of pressure (COP) signal in the anterior¿posterior (A-P) and medial¿lateral directions and LLA was determined as the ratio of the average body weight placed on the more-loaded limb to the less-loaded limb, recorded during a 30-second period. Data were collected under normal standing conditions and with somatosensory system input disrupted. Measurements were repeated with four visual targets with high (8 cyc/deg) or low (2 cyc/deg) spatial frequency and high (Weber contrast, 95%) or low (Weber contrast, 25%) contrast. Postural stability was measured under conditions of binocular refractive blur of 0, 1, 2, 4, and 8 D and with cataract simulation. The data were analyzed in a population-averaged linear model.
RESULTS. The cataract simulation caused significant increases in postural instability equivalent to that caused by 8-D blur conditions, and its effect was greater when the input from the somatosensory system was disrupted. High spatial frequency targets increased postural instability. Refractive blur, cataract simulation, or eye closure had no effect on LLA.
CONCLUSIONS. Findings indicate that cataractous and refractive blur increase postural instability, and show why the elderly, many of whom have poor vision along with musculoskeletal and central nervous system degeneration, are at greater risk of falling. Findings also highlight that changes in contrast sensitivity rather than resolution changes are responsible for increasing postural instability. Providing low spatial frequency information in certain environments may be useful in maintaining postural stability. Correcting visual impairment caused by uncorrected refractive error and cataracts could be a useful intervention strategy to help prevent falls and fall-related injuries in the elderly.
Books on the topic "Asymmetric posture"
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de Bie, Robertus M. A. The Stand-Alone Tremor. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190607555.003.0022.
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Essential tremor is defined as long-standing bilateral hand/arm tremor that is visible and may occur persistently during posture-holding, simple movements, and action. The tremor may be slightly asymmetrical. Other areas of the body that may be affected are head and neck (most frequently), the voice, and legs. Head tremor without limb tremor is accepted as essential tremor, although this definition remains controversial. Essential tremor is a progressive disease and manifests at any age. Tremor in Parkinson’s disease mostly starts unilaterally. A no–no or yes–yes tremor of the head indicates essential tremor, whereas a tremor of the jaw or tongue fits with Parkinson’s disease. The cogwheel phenomenon may also occur in patients with essential tremor. Toxins and medications as the cause for postural/kinetic tremor must be ruled out. Pharmacological options for essential tremor can be unsatisfactory.
Book chapters on the topic "Asymmetric posture"
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Barbieri, Fabio A., Carolina Menezes Fiorelli, Tiago Penedo, Pedro Henrique Alves de Paula, Lucas Simieli, Gabriel Felipe Moretto, Luis Felipe Itikawa Imaizumi, and Lilian Teresa Bucken Gobbi. "Parkinson’s Disease and Gait Asymmetry." In Locomotion and Posture in Older Adults, 161–75. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-48980-3_11.
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Fraoua, Karim Elia, and Sylvain Michelin. "Is Tourist Markovian Under Asymmetric Information?" In HCI International 2019 – Late Breaking Posters, 424–33. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30712-7_52.
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Teixeira, Luis Augusto. "Interlateral Asymmetries of Body Balance Control Resulting from Cerebral Stroke." In Locomotion and Posture in Older Adults, 291–305. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-48980-3_19.
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Xu, Xu, Chien-Chi Chang, Gert S. Faber, Idsart Kingma, and Jack T. Dennerlein. "Postural Observation of Shoulder Flexion during Asymmetric Lifting Tasks." In Digital Human Modeling, 228–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21799-9_26.
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van Hooft, Paul. "The US and Extended Deterrence." In NL ARMS, 87–107. The Hague: T.M.C. Asser Press, 2020. http://dx.doi.org/10.1007/978-94-6265-419-8_6.
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AbstractThe U.S. provides extended nuclear deterrence to allies in Europe, Asia, and elsewhere. The 2018 NPR signals several potentially destabilizing policies, including lowering the threshold for use and adding low-yield capabilities, and it emphasizes the need for nuclear superiority. This chapter argues that the U.S. is changing its nuclear posture to address the growing challenge to U.S. conventional superiority. Extended nuclear deterrence is inherently dubious and the asymmetry between the U.S. on the one hand, and its allies and adversaries on the other, makes it doubly so. In the coming decades, this will continue to generate problems for the U.S. as long as it maintains its alliance commitments.
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Bouisset, S., and M. Zattara. "Anticipatory Postural Adjustments and Dynamic Asymmetry of Voluntary Movement." In Stance and Motion, 177–83. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4899-0821-6_16.
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Kamiyama, Yayumi, Yukihiko Fujita, Tatsuo Fuchigami, Hiroshi Kamiyama, Shori Takahashi, and Kaoru Sakatani. "Asymmetrical Changes in Cerebral Blood Oxygenation Induced by an Active Standing Test in Children with Postural Tachycardia Syndrome." In Advances in Experimental Medicine and Biology, 271–78. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-0620-8_36.
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Narang, Vipin. "France." In Nuclear Strategy in the Modern Era. Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691159829.003.0006.
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This chapter traces the contours of France's nuclear postures over time. During the Cold War and after, France adopted an asymmetric escalation posture—though for very different reasons in the two periods. During the Cold War, France's geopolitical position and its fear of American abandonment in the event of a conflict pushed France toward an asymmetric escalation posture for strictly security reasons. After the dissolution of the Soviet Union, however, France enjoyed a more benign security environment. It was then faced with a choice: it could scale back its nuclear force posture toward an assured retaliation posture to deter conflict and coercion at the nuclear level, or it could continue to adopt an asymmetric escalation posture as a hedge to deter future potential conventional threats. France has since opted to maintain an independent asymmetric escalation posture.
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Narang, Vipin. "Pakistan." In Nuclear Strategy in the Modern Era. Princeton University Press, 2014. http://dx.doi.org/10.23943/princeton/9780691159829.003.0003.
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This chapter describes and tests the sources of Pakistan's nuclear postures. It shows that the country's choices, and the timing of its shift from a catalytic to an asymmetric escalation posture, are best captured by optimization theory, illustrating how exogenous changes to a state's security environment and alliance options can trigger a shift in nuclear postures. Born into and out of war, Pakistan has always perceived an existential threat from its larger neighbor India. Since 1971, Pakistan has been on a desperate quest to acquire and operationalize a nuclear weapons capability to deter Indian conventional power. As its uranium enrichment program was reaching critical thresholds to enable the weaponization of the program, Pakistan relied on a catalytic nuclear posture which used the credible threat of nuclear escalation to compel its then-patron, the United States, to intercede on its behalf in crises with India.
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Whitmore, Aleysia K. "Postlude." In World Music and the Black Atlantic, 207–26. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190083946.003.0008.
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The Postlude examines how musicians, industry personnel, and audiences today reflect on the history of the industry and its future. New technologies and platforms offer exciting new tools for participating in the genre culture and for addressing the issues of (mis)representation and power asymmetries that world music has been grappling with for the last thirty years. New world music 2.0 actors are redefining world music and rejecting the label altogether. However, they also confront the same challenges as their predecessors. While they denounce “old” world music, power asymmetries, self-righteous attitudes, and colonialist associations, they too find themselves negotiating which sounds to record, how to sell them, and what values and identities these musics carry with them. This chapter argues that those working in world music 1.0 and 2.0 should speak with one another—collaborate—in order to productively negotiate these issues in the context of a changing genre culture.
Conference papers on the topic "Asymmetric posture"
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Toomey, Daniel E., Matthew J. Mason, Warren N. Hardy, King H. Yang, James M. Kopacz, and Chris Van Ee. "Exploring the Role of Lateral Bending Postures and Asymmetric Loading on Cervical Spine Compression Responses." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12911.
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In an effort to expand the understanding of head and neck injury dynamics in rollover type crashes, this investigation explores the influence of lateral bending postures and asymmetric compressive loads on the head and cervical spine. Drop testing of five male cadaver head-neck complexes was conducted with either an initial lateral bending posture onto a horizontal impact surface or with an initial neutral posture onto an obliquely oriented surface resulting in lateral bending. Five specimens were dropped from 0.45 and 0.53 m, with resulting impact speeds ranging from 2.9 to 3.25 m/s. Radiography of the specimens was performed pre- and post-testing to document any fractures. Three of the five specimens sustained compressive cervical vertebral fractures at lower neck loads ranging between 1518 N and 3472 N. Fracture patterns did suggest that the asymmetric postures and loading resulted in asymmetric fracture patterns. Overall compressive neck injury dynamics and tolerances appear similar to previous studies of purely sagittal plane dynamics based on these initial results. This study lays a foundation for quantifying the non-sagittal plane compressive response and tolerance of the cervical spine.
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Asano, Fumihiko. "Dynamic Gait Generation of Telescopic-legged Rimless Wheel Based on Asymmetric Impact Posture." In 2009 9th IEEE-RAS International Conference on Humanoid Robots (Humanoids 2009). IEEE, 2009. http://dx.doi.org/10.1109/ichr.2009.5379599.
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Jung, Donggyun, and Fumihiko Asano. "Stable Gait Generation on a Low Friction Road Surface by Making Impact Posture Asymmetric." In 2021 IEEE International Conference on Mechatronics (ICM). IEEE, 2021. http://dx.doi.org/10.1109/icm46511.2021.9385702.
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Sakuragi, Rei, Vibol Yem, and Hiroyuki Kajimoto. "Pseudo force presentation to multiple fingers by asymmetric rotational vibration using a motor: Consideration in grasping posture." In 2017 IEEE World Haptics Conference (WHC). IEEE, 2017. http://dx.doi.org/10.1109/whc.2017.7989919.
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Aristokleous, Nicolas, Ioannis Seimenis, Yannis Papaharilaou, Georgios Georgiou, Brigitta C. Brott, and Andreas S. Anayiotos. "Rightward and Leftward Head Rotation Influence the Geometric Features of the Healthy Carotid Bifurcation." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53243.
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Posture changes may influence the geometry and hemodynamics of the carotid bifurcation [1]. As a result, head rotation may cause geometric changes that alter the hemodynamic variables previously cited to correlate with the development of atherosclerosis. Such variables include oscillating wall shear stress (WSS) and particle residence times. Glor et al. [1] had reported changes in the right carotid bifurcation geometry with leftward rotation of the head. We have previously reported that geometric differences in the right and left carotid bifurcation occur with a rightward rotation of the head [2]. To investigate the geometric changes in the carotid geometry that occur in the prone sleeping position with rightward and leftward head rotation, we have performed studies in two healthy young volunteers. We defined specific geometric parameters of the carotid bifurcation, such as bifurcation angle, internal carotid artery (ICA) angle, ICA planarity angle, in-plane asymmetry angle, tortuosity, curvature, area and diameter ratios, and compared their corresponding values in three head postures: 1) the supine neutral position, 2) the prone sleeping position with head rotation to the right (∼80 degrees), and 3) the prone sleeping position with head rotation to the left (∼80 degrees).
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Speck, Robert, and Paul J. Diefenbach. "Asymmetrical gameplay across heterogeneous devices." In ACM SIGGRAPH 2013 Posters. New York, New York, USA: ACM Press, 2013. http://dx.doi.org/10.1145/2503385.2503462.
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Anwary, Arif Reza, Michael Vassallo, and Hamid Bouchachia. "Monitoring of Prolonged and Asymmetrical Posture to Improve Sitting Behavior." In 2020 International Conference on Data Analytics for Business and Industry: Way Towards a Sustainable Economy (ICDABI). IEEE, 2020. http://dx.doi.org/10.1109/icdabi51230.2020.9325598.
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Yu, Teng, Pavlos Petoumenos, Vladimir Janjic, Mingcan Zhu, Hugh Leather, and John Thomson. "POSTER: A Collaborative Multi-Factor Scheduler for Asymmetric Multicore Processors." In 2019 28th International Conference on Parallel Architectures and Compilation Techniques (PACT). IEEE, 2019. http://dx.doi.org/10.1109/pact.2019.00058.
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Kim, Jeong-Sik, Young-Ju Cho, Gyoung-Ah Lee, and Myoung-Hee Kim. "A realistic 3D facial deformation constrained with facial asymmetry of healthy subjects." In ACM SIGGRAPH ASIA 2010 Posters. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1900354.1900359.
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Jung, Ji-Yong, Chan-Il Yoo, Kyung-Ah Kim, Soo-Kyung Bok, Bong-Ok Kim, Yonggwan Won, and Jung-Ja Kim. "Correlation Analysis between Idiopathic Scoliosis and Pelvic Asymmetry Using Sitting Posture Measurement System." In 2014 International Conference on IT Convergence and Security (ICITCS). IEEE, 2014. http://dx.doi.org/10.1109/icitcs.2014.7021754.
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