Results 261 to 270 of about 32,301 (303)

Age, Functional Postural Reflexes, and Voluntary Sway

Journal of Gerontology, 1989
This experiment considered age-related changes in functional relationships between postural reflexes and voluntary movement. Young and older adults received horizontal perturbations during normal stance and when engaged in voluntary sway. Electromyographic activity showed that (a) older adults had poorer coordination between postural reflexes and ...
G E, Stelmach, J, Phillips, R P, DiFabio, N, Teasdale   +3 more
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Broad Stance Conditions Change Postural Control and Postural Sway

Journal of Motor Behavior, 2012
Intuitively, a broad stance (i.e., standing with the feet farther apart than usual) should significantly improve postural stability. However, this intuition was not confirmed in quiet stance. Hence, a motion analysis system (markers attached to the trunk and head) and a force platform were used to investigate 13 healthy, young adults who performed 8 ...
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Maturation Of Postural Sway In Young Children

Developmental Medicine & Child Neurology, 1987
SUMMARYThe postural sway of 76 healthy young children aged from two to 14 years was investigated to identify age‐related changes in the extent of sway, the effects of eye‐closure, and the spectral composition of sway. Postural sway was measured from the excursions of the centre of pressure of ground reaction forces, and was analysed for both time and ...
C L, Riach, K C, Hayes
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Modulation of ankle stiffness during postural sway

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014
Ankle stiffness is a nonlinear, time-varying system which contributes to the control of human upright stance. This study sought to examine the nature of the contribution of stiffness to postural control by determining how intrinsic and reflex stiffnesses varied with sway.
Christopher B, Lang, Robert E, Kearney
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Postural Sway Classification using Bispectrum

2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
To reduce mortality and morbidity rates among elderly individuals, continuous monitoring of their postural sway is necessary. This monitoring is implemented through the use of accelerometer sensors, which provide time series signals. The bispectrum, an example of high order spectral (HOS) analysis, is employed to analyze these time series, leveraging ...
Nehary, Ebrahim A., Rajan, Sreeraman, Ando, Bruno   +2 more
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Visual Fixation and Postural Sway in Children

Journal of Motor Behavior, 1989
Adults are able to use a visual target to reduce quiet-standing postural sway (Lee & Lishman, 1975). The present study was designed to determine whether children, under varying postural conditions, are also able to use a visual target to reduce postural sway.
C L, Riach, J L, Starkes
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Ankle intrinsic stiffness changes with postural sway

Journal of Biomechanics, 2019
In standing, the human body is inherently unstable and its stabilization requires constant regulation of ankle torque, generated by a combination of ankle intrinsic properties, peripheral reflexes, and central contributions. Ankle intrinsic stiffness, which quantifies the joint intrinsic properties, has been usually assumed constant in standing ...
Pouya, Amiri, Robert E, Kearney
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Postural sway following cryotherapy in healthy adults

Gait & Posture, 2014
In light of the wide use of cryotherapy and its potential negative effects on postural stability, little is known about how postural sway is affected, particularly when the whole lower limb is immersed. The purpose of this study was to analyze the influence of cryotherapy on postural sway in healthy males.
Claudiane A, Fukuchi, Marcos, Duarte, Darren J, Stefanyshyn   +2 more
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Short-term differential training decreases postural sway

Gait & Posture, 2014
Differential training has been shown to enhance motor learning in sports skills. In the present study differential training was applied to the minimization of postural sway. A differential training group performed 15 one minute practice trials, each with different postural movement instructions.
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Noise-induced transitions in human postural sway

Physical Review E, 1996
Correlation functions with multiple scaling regions occur in the description of the fluctuations in the center of pressure during quiet standing. Postural sway is modeled as an inverted pendulum with a delayed feedback constructed such that for deviations beyond a spatial threshold a constant restoring force is engaged.
, Eurich, , Milton
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