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Relevant bibliographies by topics / Vestibular apparatus. Leg Posture / Journal articles

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Journal articles on the topic 'Vestibular apparatus. Leg Posture'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ray, Chester A. "Effect of gender on vestibular sympathoexcitation." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 279, no. 4 (2000): R1330—R1333. http://dx.doi.org/10.1152/ajpregu.2000.279.4.r1330.

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Studies have suggested that premenopausal women are more prone to orthostatic intolerance than men. Additionally, it has been postulated that the vestibulosympathetic reflex is important in regulating postural-related changes in sympathetic activity. The purpose of the present study was to determine whether men and women differ in their sympathetic and cardiovascular responses to stimulation of the otolith organs elicited by head-down rotation (HDR). Heart rate (HR), arterial pressure, calf blood flow (CBF), and leg muscle sympathetic nerve activity (MSNA) were measured during 3 min of HDR in

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2

Chang, Young-Hui, and Lena H. Ting. "Mechanical evidence that flamingos can support their body on one leg with little active muscular force." Biology Letters 13, no. 5 (2017): 20160948. http://dx.doi.org/10.1098/rsbl.2016.0948.

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Flamingos (Phoenicopteridae) often stand and sleep on one leg for long periods, but it is unknown how much active muscle contractile force they use for the mechanical demands of standing on one leg: body weight support and maintaining balance. First, we demonstrated that flamingo cadavers could passively support body weight on one leg without any muscle activity while adopting a stable, unchanging, joint posture resembling that seen in live flamingos. By contrast, the cadaveric flamingo could not be stably held in a two-legged pose, suggesting a greater necessity for active muscle force to sta

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3

Young, Laurence R., Charles M. Oman, Daniel Merfeld, et al. "Spatial Orientation and Posture During and Following Weightlessness: Human Experiments on Spacelab Life Sciences 1." Journal of Vestibular Research 3, no. 3 (1993): 231–39. http://dx.doi.org/10.3233/ves-1993-3304.

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The 4 payload crew members of the Spacelab Life Sciences 9-day space flight in 1991 were subjected to limited vestibular testing in flight as well as pre and post flight. Major differences in individual “perceptual style” appeared in their reaction to the visual-vestibular stimuli in the rotating dome experiment, and especially in the extent to which nondirectional tactile cues served to anchor the subjective vertical and body postural reactions. The ability of subjects to point to remembered target positions was degraded in space, which produced a tendency to point low in some subjects in fli

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4

Magnusson, M., G. Andersson, S. Gomez, et al. "Cervical muscle afferents play a dominant role over vestibular afferents during bilateral vibration of neck muscles." Journal of Vestibular Research 16, no. 3 (2006): 127–36. http://dx.doi.org/10.3233/ves-2006-16305.

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A previous study showed that vibratory stimulation of neck muscles in humans induced short-latency electromyographic (EMG) activation of lower leg muscles, producing postural reactions at the feet. These findings indicated that cervical proprioception contributes to stabilization of stance through rapidly integrated pathways. However, as vibration may excite both proprioceptive and vestibular afferents, and because of the proximity of neck muscles to the vestibular apparatus, neck muscle vibration could also have activated the vestibular system thereby contributing to the effect observed. To i

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Bednarczuk, Grzegorz, Ida Wiszomirska, Jolanta Marszałek, Izabela Rutkowska, and Waldemar Skowroński. "Static Balance of Visually Impaired Athletes in Open and Closed Skill Sports." Polish Journal of Sport and Tourism 24, no. 1 (2017): 10–14. http://dx.doi.org/10.1515/pjst-2017-0002.

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AbstractIntroduction. In elite sport, athletes are required to maintain appropriate body posture control despite a number of destabilising factors. The functions of body posture control are monitored by the central nervous system that constantly receives information from the vestibular and somatosensory systems as well as from the visual analyser. Visual impairment may contribute to a decrease in the level of motor abilities and skills; however, it does not prevent visually impaired individuals from taking up physical activity. Therefore, this study sought to assess the static balance of visua

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6

Zhang, Lei, Anatol G. Feldman, and Mindy F. Levin. "Vestibular and corticospinal control of human body orientation in the gravitational field." Journal of Neurophysiology 120, no. 6 (2018): 3026–41. http://dx.doi.org/10.1152/jn.00483.2018.

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Body orientation with respect to the direction of gravity changes when we lean forward from upright standing. We tested the hypothesis that during upright standing, the nervous system specifies the referent body orientation that defines spatial thresholds for activation of multiple muscles across the body. To intentionally lean the body forward, the system is postulated to transfer balance and stability to the leaned position by monotonically tilting the referent orientation, thus increasing the activation thresholds of ankle extensors and decreasing their activity. Consequently, the unbalance

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7

Fitzpatrick, R., D. Burke, and S. C. Gandevia. "Loop gain of reflexes controlling human standing measured with the use of postural and vestibular disturbances." Journal of Neurophysiology 76, no. 6 (1996): 3994–4008. http://dx.doi.org/10.1152/jn.1996.76.6.3994.

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1. In this study we measured the loop gain of postural reflexes in standing human subjects. Reflex activity is conventionally described in terms of the muscle activation arising from a perturbation, but in this study the ability of the evoked muscle activity to correct the perturbation was also measured, and the behavior of the entire feedback loop is described. 2. A weak continuous random perturbation was applied at waist level to standing subjects. The effects of the perturbation on body sway and soleus electromyogram (EMG) were identified by cross-correlation, and spectral analysis was used

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8

Talantseva, Valentina, Andrei Orlov, Nadezhda Altynova, and Andrei Platunov. "On the choice issue of functional tests in physical fitness of the undergraduates." BIO Web of Conferences 29 (2021): 01006. http://dx.doi.org/10.1051/bioconf/20212901006.

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Purpose: The purpose of our research is to determine, on the basis of mathematical processing of the experimental results, the most informative functional test, which makes it possible with a greater degree of reliability to assess the state of the vestibular apparatus and the presence of deviations in the work of the nervous system of students of higher educational institutions, and thereby recommend it for use in the practice of physical education in higher educational institutions. Results: Data analysis of the ascertaining experiment for evaluation of the condition of the vestibular system

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9

Худолій, О., Т. Карпунець, and О. Іващенко. "Structural Model of Motor Readiness of Young Gymnasts Aged 6-8." Teorìâ ta Metodika Fìzičnogo Vihovannâ, no. 4 (December 25, 2015): 3–10. http://dx.doi.org/10.17309/tmfv.2015.4.1150.

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The purpose of the research is to determine the factor structure of the motor readiness of young gymnasts aged 6—8. Research methods. To achieve the tasks set, the research relies on theoretical and empirical methods used: analysis and collation of scientific and methodological literature; modeling, pedagogical observations and experiment, factor analysis. The research recorded the following indicators: the number of repetitions required to teach the exercises; score for the unit-directional movement coordination exercise (test 3); score for the differently directed movement coordination

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Petrov, Dmytro, Oleg Khudolii, and Mirosława Cieślicka. "Motor Skills: Motor Fitness Structure of 9-Year-Old Boys." Journal of Learning Theory and Methodology 1, no. 2 (2020): 58–63. http://dx.doi.org/10.17309/jltm.2020.2.02.

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The purpose of the study was to determine the place of motor skills in the motor fitness structure of 9-year-old boys. Materials and methods. The study participants were 48 9-year-old boys. The children and their parents were informed about all the features of the study and gave their consent to participate in the experiment. The study used the following research methods: analysis of scientific and methodological literature, pedagogical observations, testing of motor fitness, probabilistic approach to assessing the learning process, methods of mathematical statistics. In the experiment, the st

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11

Ivashchenko, Olha, and Daria Sirichenko. "Structure of Motor Fitness of 7-Year-Old Girls." Journal of Learning Theory and Methodology 1, no. 1 (2020): 20–25. http://dx.doi.org/10.17309/jltm.2020.1.03.

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The purpose of the study was to determine the structure of motor fitness of 7-year-old girls. Materials and methods. The study participants were 27 7-year-old girls. The children and their parents were informed about all the features of the study and gave their consent to participate in the experiment. The research methods used in the study include analysis of scientific and methodological literature, pedagogical observations, testing of motor fitness, probabilistic approach to assessing the learning process, methods of mathematical statistics. The study recorded the primary schoolchildren’s l

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12

Gioanni, Henri, and Pierre-Paul Vidal. "Possible cues driving context-specific adaptation of optocollic reflex in pigeons (Columba livia)." Journal of Neurophysiology 107, no. 2 (2012): 704–17. http://dx.doi.org/10.1152/jn.00684.2011.

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Context-specific adaptation (Shelhamer M, Clendaniel R. Neurosci Lett 332: 200–204, 2002) explains that reflexive responses can be maintained with different “calibrations” for different situations (contexts). Which context cues are crucial and how they combine to evoke context-specific adaptation is not fully understood. Gaze stabilization in birds is a nice model with which to tackle that question. Previous data showed that when pigeons ( Columba livia) were hung in a harness and subjected to a frontal airstream provoking a flying posture (“flying condition”), the working range of the optokin

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13

Hall, Leanne M., Sandra Brauer, Fay Horak, and Paul W. Hodges. "Adaptive Changes in Anticipatory Postural Adjustments With Novel and Familiar Postural Supports." Journal of Neurophysiology 103, no. 2 (2010): 968–76. http://dx.doi.org/10.1152/jn.00479.2009.

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Anticipatory postural adjustments (APAs) serve to stabilize posture prior to initiation of voluntary movement. This study examined the effects of changes in postural support on APAs using novel and familiar support paradigms. We also investigated whether postural strategies were refined with practice and how the CNS responded when multiple supports were available. Twelve healthy subjects stood on dual force platforms and performed 20 randomized left and right rapid leg-lift tasks in response to a visual cue under four conditions: unsupported, bilateral handgrip, bite plate, and a combined hand

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14

Lellis, Nathália Beatriz Manara, and Paulo José Oliveira Cortez. "Comportamento da Lordose Lombar no Exercício Resistido / Lumbar lordosis behavior in Resisted Exercise." REVISTA CIÊNCIAS EM SAÚDE 6, no. 3 (2016): 82–93. http://dx.doi.org/10.21876/rcsfmit.v6i3.585.

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Objetivo: Analisar a curvatura lombar durante a execução de exercícios resistidos. Materiais e Métodos: Foram analisadas 81 pessoas, durante a execução de cinco aparelhos diferentes de exercício resistido. Fez-se um registro fotográfico da coluna lombar durante os exercícios, seguido da análise de quatro variáveis: manutenção da lordose fisiológica, hiperlordose, retificação da curvatura e inversão da curvatura. Resultados: Em todos os aparelhos houve a modificação do comportamento da lordose lombar durante a execução dos exercícios. A manutenção da lordose fisiológica, correspondendo a uma po

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15

Huppert, Doreen, Max Wuehr, and Thomas Brandt. "Acrophobia and visual height intolerance: advances in epidemiology and mechanisms." Journal of Neurology 267, S1 (2020): 231–40. http://dx.doi.org/10.1007/s00415-020-09805-4.

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AbstractHistorical descriptions of fear at heights date back to Chinese and Roman antiquity. Current definitions distinguish between three different states of responses to height exposure: a physiological height imbalance that results from an impaired visual control of balance, a more or less distressing visual height intolerance, and acrophobia at the severest end of the spectrum. Epidemiological studies revealed a lifetime prevalence of visual height intolerance including acrophobia in 28% of adults (32% in women; 25% in men) and 34% among prepubertal children aged 8–10 years without gender

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16

Siebers, Hannah Lena, Jörg Eschweiler, Valentin M. Quack, Markus Tingart, and Marcel Betsch. "Inertial measurement units for the detection of the effects of simulated leg length inequalities." Journal of Orthopaedic Surgery and Research 16, no. 1 (2021). http://dx.doi.org/10.1186/s13018-021-02212-z.

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Abstract Background Leg length inequalities (LLI) are a common condition that can be associated with detrimental effects like low back pain and osteoarthritis. Inertial measurement units (IMUs) offer the chance to analyze daily activities outside a laboratory. Analyzing the kinematic effects of (simulated) LLI on the musculoskeletal apparatus using IMUs will show their potentiality to improve the comprehension of LLI. Methods Twenty healthy participants with simulated LLI of 0-4 cm were analyzed while walking with an inertial sensor system (MyoMotion). Statistical evaluation of the peak anatom

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