Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Quiet standing"”.
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Preventative stepping in quiet standing : effect of vestibulopathy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Impact of Spasticity on Balance Control During Quiet Standing in Persons Post-Stroke
… low or high spasticity at the ankle completed quiet standing trials with eyes open and closed. Balance control was measured by estimating centre of pressure (COP) movement and trunk sway. Results: Individuals with high spasticity had greater COP velocity, trunk sway velocity, and trunk sway …
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Hand control of bipedal balance in quiet standing: implementations for lower extremity exoskeleton
… they also be surrogates for natural balance in quiet standing? This is the main question that this dissertation answers. Importantly, this dissertation considers the ability of the arms and hands to make rapid adjustments to the center of pressure (COP) that will follow the center of mass (COM) …
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Effects of Tai Chi on quiet standing balance and obstacle crossing strategies: A biomechanical analysis
Open Restriction set for Item 111164 on 2019-06-25T19:11:57Z with date null by mhoh2@illinois.edu.
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The acute and chronic effects of resistance exercise with and without blood flow restriction on fall risk factors in older adults
… no-blood flow restriction (NBFR) conditions on quiet standing (double leg and single leg) and gait stability (walking) after performing a fatiguing exercise protocol to either the ankle or knee in healthy young adults. There were minimal changes to quiet standing and gait stability post-exercise …
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Effects of Obesity on Balance Recovery in Response to Small Postural Perturbations
… neither a step nor hip flexion was utilized. Quiet standing trials were also conducted for comparison with the literature. Obese individuals exhibited less center of mass (COM) displacement and a slower COM velocity compared to lean individuals when exposed to identical force perturbations. …
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Generalizability of Center of Pressure Measurements Across Age Populations
… Studies on the control of posture during quiet standing using force platform data lack standardization in measurement protocols (especially trial length and number). Guidelines for methodology that met acceptable reliability levels were established in both normal and altered visual …
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The Effects Of Age And Distraction On Interlimb Synchronization Of The Center Of Pressure
… young and older adults. Participants performed quiet standing trials on separate force plates under eyes-open and eyes-closed conditions, with and without cognitive distraction (counting by ones, backward by sevens). Interlimb synchrony was assessed using cross-correlation (CCF) of center of …
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Emotional, cognitive, and postural adaptations to repeated postural threat exposure
… mediolateral support surface translation during quiet standing. Regardless of age, participants were more anxious, reported broad changes in attention focus, and increased centre of pressure (COP) amplitude and frequency with first threat exposure. With early threat exposure, participants were …
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Towards Perturbation-free Identification of Human Standing Balance
… A method to estimate natural, unperturbed standing balance dynamics would provide a necessary tool to examine the apparent control mechanisms employed by healthy individuals, and lead to insight and inspiration for developing effective rehabilitation and assistive technologies for those …
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The biomechanical changes in gait and posture as a result of the total knee arthroplasty
… were steady state gait, gait initiation and quiet standing whilst their kinematics and kinetics were measured. At these assessments patients completed self-reported questionnaires. Only 10 completed all assessments and were therefore considered in the final analysis. The results indicated …
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Equine proximal phalanx bone properties during growth
… bone and used to simulate the loading during quiet standing. Changes in mineral density and bone area fraction in the distal, diaphysis, and proximal regions were evaluated. The diaphysis of the P1 maintained constant strain energy density (SED) during growth, indicating adaptation to the …
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Maximum Absolute and Relative Joint Torques during Recovery from a Simulated Trip
… that obesity negatively affects balance during quiet standing, yet little is known about its effect on the ability to recover after a postural perturbation. The purpose of this thesis was to investigate the effects of obesity on single-step balance recovery from an incipient forward fall. Eight …
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Understanding the Independent Effects of Inertia and Weight on Balance
… increased inertia and increased weight, on standing balance. Sixteen normal-weight male participants completed quiet standing in a custom-built backboard under four conditions: baseline, increased inertia only, increased weight only, and increased inertia and weight. Increased inertia did …
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Evaluation of Circumferential Ankle Pressure as an Ergonomic Intervention to Maintain Balance Perturbed by Localized Muscular Fatigue of the Ankle Joint
… PA) used as a covariate. Postural sway during quiet standing was assessed using a force platform both pre- and post-fatigue as well as in the absence and presence of CAP. Application of CAP resulted in larger postural sway in individuals with low PA, and reduced postural sway in individuals …
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Longitudinal Locomotor and Postural Control Following Mild Traumatic Brain Injury
… gait, and 3) postural control complexity during quiet standing. Compared to matched health controls, concussed athletes exhibited significant and persistent differences in turning kinematics, local dynamic stability, and postural complexity over the initial six weeks following injury. These motor …
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Toward understanding factors affecting falls among individuals who are obese
… studies were carried out to provide better understanding into the factors affecting falls in individuals who are obese. The first study investigated the effects of obesity on plantar sensitivity, and explored the relationship between plantar sensitivity and postural sway during quiet standing. …
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The Effect of Optic Flow During Attention Related Tasks and Quiet Stance
… to the head position while participants stood quietly on a force plate that measure ground reaction forces and completed 12 randomized trials across 3 conditions. Kinematics were collected through 8 markers placed on different parts using motion capture. Muscle activity was also collected by …
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Effects of Localized Muscle Fatigue on Postural Control: Interactive Effects with Inclined Surfaces and Unexpected Loads, and Intervention Efficacy
… muscle fatigue affects postural control during quiet standing on inclined surfaces. Inclined surfaces compromised postural control, with the most deleterious effects found while standing in a lateral direction. Fatigue did not result in further decrements in postural control during standing on …
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The biomechanical consequences of body size differences in humans
… and leg spring angle during running; 3) quiet standing postural sway and stance characteristics; and 4) variability and scaling patterns in bone microstructure of the femur. Additionally, this dissertation explored different statistical approaches for examining each of these areas to …
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