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Postural stability and older adults

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https://www.readbyqxmd.com/read/28729887/whole-body-vibration-training-improves-balance-control-and-sit-to-stand-performance-among-middle-aged-and-older-adults-a-pilot-randomized-controlled-trial
#1
Ming-Chen Ko, Long-Shan Wu, Sangwoo Lee, Chien-Chun Wang, Po-Fu Lee, Ching-Yu Tseng, Chien-Chang Ho
BACKGROUND: Aging is associated with decreased balance, which increases falling risk. The objective of the current study was to determine the feasibility and effects of whole-body vibration (WBV) training on knee extensor muscle power, limits of stability, and sit-to-stand performance among community-dwelling middle-aged and older adults in the United States. METHODS: A randomized pilot study with participant blinding was conducted. Feasibility outcomes included recruitment and compliance rate...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/28728460/acute-effects-of-moderate-alcohol-consumption-on-postural-stability-in-older-adults
#2
Helen Z Wu, Lisa C Barry, Yinghui Duan, Richard W Bohannon, Jonathan M Covault, James J Grady
This study involved healthy community-living older adults in an investigation of the association between moderate alcohol consumption (AC) and acute changes in postural stability and whether the association differed according to pre-AC balance skills. Thirty-nine moderate drinkers aged ≥ 65 years (62% women; mean age: 73.9 ± 6.1 years) consumed a moderate dose of alcohol (0.4 g/kg; administered as two drinks). Breath alcohol concentration and postural stability were measured at five time points (pre-AC and 40, 80, 120, and 160 minutes post-AC)...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28688367/postural-motor-learning-in-parkinson-s-disease-the-effect-of-practice-on-continuous-compensatory-postural-regulation
#3
Karen Van Ooteghem, James S Frank, Fay B Horak
INTRODUCTION: Although balance training is considered the most effective treatment for balance impairments in Parkinson's disease (PD), few studies have examined if learning for balance control remains intact with PD. This study aimed to determine if learning for automatic postural responses is preserved in people with PD. METHODS: Eleven participants with moderate PD (68±6.4years; H&Y: 2-3) on their usual medication maintained balance on a platform that oscillated forward and backward with variable amplitude and constant frequency...
June 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28657810/improvement-of-balance-stability-in-older-individuals-by-on-water-training
#4
Fabiana Rodrigues Ost, Caroline Ribeiro de Souza, Luis Augusto Teixeira
In the present investigation we evaluated the effect of stand-up paddle practice on upright postural control in older individuals. Participants were assigned to a group practicing stand-up paddle on seawater or to a walking control group. Balance stability was evaluated in the tandem Romberg and tiptoes postures, comparing the conditions of eyes open versus closed. Results showed that stand-up paddle practice led to reduced anteroposterior and mediolateral amplitudes of body sway in both visual conditions, while walking led to no effect on balance...
June 28, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28610582/behavioral-and-neural-adaptations-in-response-to-five-weeks-of-balance-training-in-older-adults-a-randomized-controlled-trial
#5
Jan Ruffieux, Audrey Mouthon, Martin Keller, Michael Wälchli, Wolfgang Taube
BACKGROUND: While the positive effect of balance training on age-related impairments in postural stability is well-documented, the neural correlates of such training adaptations in older adults remain poorly understood. This study therefore aimed to shed more light on neural adaptations in response to balance training in older adults. METHODS: Postural stability as well as spinal reflex and cortical excitability was measured in older adults (65-80 years) before and after 5 weeks of balance training (n = 15) or habitual activity (n = 13)...
June 13, 2017: Journal of Negative Results in Biomedicine
https://www.readbyqxmd.com/read/28574915/effect-of-sitting-pause-times-on-balance-after-supine-to-standing-transfer-in-dim-light
#6
Eric G Johnson, Abdulaziz A Albalwi, Fuad M Al-Dabbak, Noha S Daher
BACKGROUND AND PURPOSE: The risk of falling for older adults increases in dimly lit environments. Longer sitting pause times, before getting out of bed and standing during the night, may improve postural stability. The purpose of this study was to measure the effect of sitting pause times on postural sway velocity immediately after a supine to standing transfer in a dimly lit room in older adult women. METHODS: Eighteen healthy women aged 65 to 75 years who were able to independently perform supine to standing transfers participated in the study...
June 1, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28570861/cognitive-tasks-promote-automatization-of-postural-control-in-young-and-older-adults
#7
Alexandra Potvin-Desrochers, Natalie Richer, Yves Lajoie
Researchers looking at the effects of performing a concurrent cognitive task on postural control in young and older adults using traditional center-of-pressure measures and complexity measures found discordant results. Results of experiments showing improvements of stability have suggested the use of strategies such as automatization of postural control or stiffening strategy. This experiment aimed to confirm in healthy young and older adults that performing a cognitive task while standing leads to improvements that are due to automaticity of sway by using sample entropy...
May 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28493067/visuotactile-interaction-even-in-far-sagittal-space-in-older-adults-with-decreased-gait-and-balance-functions
#8
Wataru Teramoto, Keito Honda, Kento Furuta, Kaoru Sekiyama
Spatial proximity of signals from different sensory modalities is known to be a crucial factor in facilitating efficient multisensory processing in young adults. However, recent studies have demonstrated that older adults exhibit strong visuotactile interactions even when the visual stimuli were presented in a spatially disparate position from a tactile stimulus. This suggests that visuotactile peripersonal space differs between older and younger adults. In the present study, we investigated to what extent peripersonal space expands in the sagittal direction and whether this expansion was linked to the decline in sensorimotor functions in older adults...
August 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28473404/graded-association-between-kidney-function-and-impaired-orthostatic-blood-pressure-stabilization-in-older-adults
#9
Mark Canney, Matthew D L O'Connell, Donal J Sexton, Neil O'Leary, Rose Anne Kenny, Mark A Little, Conall M O'Seaghdha
BACKGROUND: Impaired orthostatic blood pressure (BP) stabilization is highly prevalent in older adults and is a predictor of end-organ injury, falls, and mortality. We sought to characterize the relationship between postural BP responses and the kidney. METHODS AND RESULTS: We performed a cross-sectional analysis of 4204 participants from The Irish Longitudinal Study on Ageing, a national cohort of community-dwelling adults aged ≥50 years. Beat-to-beat systolic and diastolic BP were measured during a 2-minute active stand test...
May 4, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28437760/the-effects-of-object-height-and-visual-information-on-the-control-of-obstacle-crossing-during-locomotion-in-healthy-older-adults
#10
Sho Kunimune, Shuichi Okada
In order to safely avoid obstacles, humans must rely on visual information regarding the position and shape of the object obtained in advance. The present study aimed to reveal the duration of obstacle visibility necessary for appropriate visuomotor control during obstacle avoidance in healthy older adults. Participants included 13 healthy young women (mean age: 21.5±1.4years) and 15 healthy older women (mean age: 68.5±3.5years) who were instructed to cross over an obstacle along a pressure-sensitive pathway at a self-selected pace while wearing liquid crystal shutter goggles...
April 13, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28411444/continuous-and-difficult-discrete-cognitive-tasks-promote-improved-stability-in-older-adults
#11
Yves Lajoie, Deborah A Jehu, Natalie Richer, Alan Chan
Directing attention away from postural control and onto a cognitive task affords the emergence of automatic control processes. Perhaps the continuous withdrawal of attention from the postural task facilitates an automatization of posture as opposed to only intermittent withdrawal; however this is unknown in the aging population. Twenty older adults (69.9±3.5years) stood with feet together on a force platform for 60s while performing randomly assigned discrete and continuous cognitive tasks. Participants were instructed to stand comfortably with their arms by their sides while verbally responding to the auditory stimuli as fast as possible during the discrete tasks, or mentally performing the continuous cognitive tasks...
April 3, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28392246/the-two-faces-of-postural-control-in-older-adults-stability-and-function
#12
Ruth Rath, Michael G Wade
No abstract text is available yet for this article.
March 25, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28355265/effects-of-different-lower-limb-sensory-stimulation-strategies-on-postural-regulation-a-systematic-review-and-meta-analysis
#13
Mei Teng Woo, Keith Davids, Jarmo Liukkonen, Dominic Orth, Jia Yi Chow, Timo Jaakkola
Systematic reviews of balance control have tended to only focus on the effects of single lower-limb stimulation strategies, and a current limitation is the lack of comparison between different relevant stimulation strategies. The aim of this systematic review and meta-analysis was to examine evidence of effects of different lower-limb sensory stimulation strategies on postural regulation and stability. Moderate- to high- pooled effect sizes (Unbiased (Hedges' g) standardized mean differences (SMD) = 0.31-0...
2017: PloS One
https://www.readbyqxmd.com/read/28331301/correlation-between-movement-complexity-during-static-standing-and-balance-function-in-institutionalized-older-adults
#14
Momoko Yamagata, Tome Ikezoe, Midori Kamiya, Mitsuhiro Masaki, Noriaki Ichihashi
PURPOSE: Sample entropy (SampEn) is an analysis to evaluate movement complexity of the center of pressure (COP). A lower value of SampEn indicates lower complexity of COP variability, that is, rigidity, and lower degrees of freedom. Previous studies reported the association of increased SampEn with improved standing balance ability in young subjects. However, no studies have examined these relationships among older adults. Thus, we aimed to investigate the relationship between SampEn and standing balance ability in older adults...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28326869/design-and-evaluation-of-vibratory-shoe-on-balance-control-for-elderly-subjects-technical-note
#15
Atefeh Aboutorabi, Mokhtar Arazpour, Farzam Farahmand, Mahmood Bahramizadeh, Reza Fadayevatan, Ehsan Abdollahi
BACKGROUND AND AIM: Aging often results in a decline in somatosensory function, and such changes are associated with diminished motor performance. Input noise can enhance sensory and motor function through a mechanism known as stochastic resonance (SR). This paper describes the development and testing of a new vibrating shoe to possibly assist the elderly patients in controlling their balance and decreasing their falling risks. TECHNIQUE: The new vibrating shoe was evaluated to ascertain its ability to generate appropriate random and nonlinear vibrations...
March 22, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28299643/retention-of-the-first-trial-effect-in-gait-slip-among-community-living-older-adults
#16
Xuan Liu, Tanvi Bhatt, Shuaijie Wang, Feng Yang, Yi-Chung Clive Pai
"First-trial effect" characterizes the rapid adaptive behavior that changes the performance outcome (from fall to non-fall) after merely a single exposure to postural disturbance. The purpose of this study was to investigate how long the first-trial effect could last. Seventy-five (≥ 65 years) community-dwelling older adults, who were protected by an overhead full body harness system, were retested for a single slip 6-12 months after their initial exposure to a single gait-slip. Subjects' body kinematics that was used to compute their proactive (feedforward) and reactive (feedback) control of stability was recorded by an eight-camera motion analysis system...
February 2017: GeroScience
https://www.readbyqxmd.com/read/28218341/influence-of-hip-and-knee-osteoarthritis-on-dynamic-postural-control-parameters-among-older-fallers
#17
Sumaiyah Mat, Chin Teck Ng, Maw Pin Tan
OBJECTIVE: To compare the relationship between postural control and knee and hip osteoarthritis in older adults with and without a history of falls. METHODS: Fallers were those with ≥ 2 falls or 1 injurious fall over 12 months. Non-fallers were volunteers with no falls in the past year. Radiological evidence of osteoarthritis with no reported symptoms was considered "asymptomatic osteoarthritis", while "symptomatic osteoarthritis" was defined as radiographic osteoarthritis with pain or stiffness...
March 6, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28204720/postural-stability-in-older-adults-with-alzheimer-disease
#18
Normala Mesbah, Meredith Perry, Keith D Hill, Mandeep Kaur, Leigh Hale
Background: The prevalence of adults with Alzheimer disease (AD) aged >65 years is increasing and estimated to quadruple by 2051. Purpose: The aim of this study was to investigate postural stability in people with mild to moderate AD and factors contributing to postural instability compared with healthy peers (controls). Data Sources: A computerized systematic search of databases and a hand search of reference lists for articles published from 1984 onward (English-language articles only) were conducted on June 2, 2015, using the main key words "postural stability" and "Alzheimer's disease...
March 1, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28151943/improving-posture-motor-dual-task-with-a-supraposture-focus-strategy-in-young-and-elderly-adults
#19
Shu-Han Yu, Cheng-Ya Huang
In a postural-suprapostural task, appropriate prioritization is necessary to achieve task goals and maintain postural stability. A "posture-first" principle is typically favored by elderly people in order to secure stance stability, but this comes at the cost of reduced suprapostural performance. Using a postural-suprapostural task with a motor suprapostural goal, this study investigated differences between young and older adults in dual-task cost across varying task prioritization paradigms. Eighteen healthy young (mean age: 24...
2017: PloS One
https://www.readbyqxmd.com/read/28067608/continuous-cognitive-task-promotes-greater-postural-stability-than-an-internal-or-external-focus-of-attention-in-older-adults
#20
Natalie Richer, Nadia Polskaia, Yves Lajoie
Background/Study Context: Recent evidence suggests that removing attention from postural control using either an external focus or a cognitive task will improve stability in healthy young adults. Due to increases in attentional requirements of upright stance in older adults, it is unclear if similar benefits would be observed in this population. The aim of the present study was to examine the effect of attentional focus and of a continuous cognitive task on postural control in older adults. METHODS: Sixteen healthy older adults (71...
January 2017: Experimental Aging Research
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