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Reliability of Postural Sway Measures of Standing Balance Tasks

Saud F. Alsubaie, Susan L. Whitney, Joseph M. Furman, Gregory F. Marchetti, Kathleen H. Sienko, and Patrick J. Sparto

force platforms. Therefore, the purpose of this study was to examine the test–retest reliability of subjects’ postural sway during 24 standing balance tasks, within and between 2 visits occurring 1 week apart. Secondary to this main purpose, we wanted to examine which kinematic variables of postural

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Postural Sway and Muscle Activity Dynamics of Upright Standing on Sloped Surfaces

Jacey Baldridge and Adam C. King

preserve the center of mass within the base of support (BOS). Collectively, the dynamics of postural sway and neuromuscular responses result in physiological complexity arising from nonlinear interaction of the many underlying mechanisms acting conjointly to preserve postural stability. Flexible and

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Validity of Postural Sway Assessment on the Biodex BioSway™ Compared With the NeuroCom Smart Equitest

Daniel G. Miner, Brent A. Harper, and Stephen M. Glass

validity of the postural sway assessment on the Biodex BioSway™ (HS-SIB) compared with the NeuroCom (HS-SOT). Methods Forty-nine subjects participated in this study (29 females: 24.34 [2.45] y, height 163.65 [7.57] cm, mass 63.64 [7.94] kg; 20 males: 26.00 [3.70] y, height 180.11 [7.16] cm, mass 82.97 [12

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Effects of Foot Placement on Postural Sway in the Anteroposterior and Mediolateral Directions

Cameron T. Gibbons, Polemnia G. Amazeen, and Aaron D. Likens

placement and postural sway, which is commonly operationalized as distance traveled ( Day, Steiger, Thompson, & Marsden, 1993 ; Kim et al., 2014 ; Kirby et al., 1987 ; Mitra & Fraizer, 2004 ). Common approaches are to change the area of BoS by having participants simply vary the distance between feet or

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Effects of Simulated Horseback Riding on Balance, Postural Sway, and Quality of Life in Older Adults With Parkinson’s Disease

Leah S. Goudy, Brandon Rhett Rigby, Lisa Silliman-French, and Kevin A. Becker

functional outcomes in older adults with PD. The purpose of this investigation was to determine the changes in balance, postural sway, and QoL following 6 weeks of SHBR in older adults diagnosed with PD. It was hypothesized that (a) balance and postural sway would improve and (b) specific dimensions of the

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The Use of the Anchor System Reduces Postural Sway During Upright Standing Irrespective of Plantar Flexors Muscle Fatigue in Young and Older Adults

Andressa Busch Rocha Pereira and Renato Moraes

their importance, can disturb control of upright stance, thus causing an increase in postural sway ( Bisson, Lajoie, & Bilodeau, 2014 ; Gimmon, Riemer, Oddsson, & Melzer, 2011 ; Vuillerme, Burdet, Isableu, & Demetz, 2006 ). Although older adults typically exhibit more postural sway than young adults

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Influences of Body Lean and Vision on Unperturbed Postural Sway

Michael A. Riley, Suvobrata Mitra, Thomas A. Stoffregen, and Michael T. Turvey

We examined the potentially exploratory and performatory nature of postural sway. Subjects stood upright or leaned forward, with eyes open or closed. Postural data were analyzed using a statistical mechanics analysis of center of pressure (COP) trajectories, which examines the fractional Brownian nature of postural sway. Positive correlations (persistence) over short time scales are hypothesized to reflect exploratory behavior, and negative correlations (antipersistence) over long time scales are hypothesized to reflect performatory behavior. When leaning, subjects exhibited decreased levels of persistence (decreased correlation) and increased levels of antipersistence (increased correlation) than when upright. With eyes open, subjects showed decreased levels of persistence and decreased levels of antipersistence than with eyes closed. Effects of vision were more pronounced when leaning. Evidence for direction-specific exploration (based upon root mean square variability analysis) was considered. Task-specificity and trade-offs between biomechanical and task constraints in models of postural control were discussed.

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The Effects of Self-Myofascial Release on Hamstring and Gastrocnemius Muscles Using Foam Roll on Postural Sway, Knee Proprioception, and Dynamic Balance in Recreationally Active Females

Mahdis Dadfar and Foad Seidi

intervention. ▸ Postural sway outcomesremained unchanged after an acute bout of foam rolling. The proper function of the proprioceptive system plays a crucial role in preventing sports-related injuries and improving athletes’ performance. 1 This system includes senses of joint position, body movement in space

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Effect of a “T-Band” Kick Training Protocol on Postural Sway

Andrew G. Baker, William G. Webright, and David H. Perrin

The purpose of this study was to examine the effects of a resistive tubing kick training protocol on postural sway in uninjured collegiate wrestlers. An experimental group (n = 10) performed a progressive resistive tubing kick training protocol three times per week for 6 weeks. A control group (n = 9) performed no resistive tubing training during the 6 weeks. Postural sway (stability index) was assessed before and after the 6-week training period. ANOVAs demonstrated no significant interactions, although significant main effects were found for group and eye condition. The experimental group demonstrated less postural sway than the control group regardless of training, and postural sway was greater with the eyes closed than with the eyes open. Resistive tubing kick training does not significantly improve postural sway in healthy collegiate wrestlers. Further research should examine the potential benefits of proprioceptive training using a greater intensity of training and/or using subjects who have a greater potential for improvement.

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Multifractal Analysis Differentiates Postural Sway in Obese and Nonobese Children

Philip W. Fink, Sarah P. Shultz, Eva D’Hondt, Matthieu Lenoir, and Andrew P. Hills

of stability suggest that obesity imposes significant constraints on children’s balance. Obese children have a greater area of postural sway ( Colne, Frelut, Peres, & Thoumie, 2008 ; Deforche et al., 2009 ), specifically in the mediolateral direction ( McGraw, McClenaghan, Williams, Dickerson