Academic literature on the topic 'Vestibular apparatus. Leg Posture'

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

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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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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Vestibular apparatus. Leg Posture"

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Lee, Son Gregory Martin. "Vestibular connectivity to soleus motor units during quiet stance." Thesis, University of British Columbia, 2007. http://www.oregonpdf.org.

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Fu, Siu-ngor. "Postural disturbance in subjects with multiple ankle sprains the role of somatosensory and vestibular systems /." 2003. http://www.oregonpdf.org.

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Thesis (Ph. D.)--Hong Kong Polytechnic University, 2003.<br>Includes bibliographical references (leaves 199-216). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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Books on the topic "Vestibular apparatus. Leg Posture"

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Makoto, Igarashi, and Black Franklin O. 1937-, eds. Vestibular and visual control on posture and locomotor equilibrium. Karger, 1985.

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2

Th, Mergner, Hlavačka F, European Neuroscience Association, and International Symposium on Sensory Interaction in Posture and Movement Control (1994 : Smolenice, Slovakia), eds. Multisensory control of posture. Plenum Press, 1995.

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O, Pompeiano, and Allum J. H. J, eds. Vestibulospinal control of posture and locomotion. Elsevier, 1988.

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4

(Editor), T. Kumazawa, L. Kruger (Editor), and K. Mizumura (Editor), eds. The Polymodal Receptor - A Gateway to Pathological Pain (Progress in Brain Research). Elsevier Science, 1996.

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Takao, Kumazawa, Kruger Lawrence, and Mizumura Kazue, eds. The polymodal receptor: A gateway to pathological pain. Elsevier, 1996.

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Book chapters on the topic "Vestibular apparatus. Leg Posture"

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Hlavacka, F., and M. Krizkova. "Body Leaning Induced by Galvanic Vestibular and Vibratory Leg Muscle Stimulation." In Multisensory Control of Posture. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1931-7_28.

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