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- Balance (1)
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- Detrended fluctuation analysis (1)
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- Turning strategies; Complex locomotor skills; Age-related differences and turn strategies; Anticipatory v. reactive spatial-temporal gait adaptations; Fast walking speed & late-visual cue constraints; Spatial constraints; Personal space margin of safety; Fall prevention gait training; Healthy older adults at low fall risk; Spin-turn (1)
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Articles 1 - 6 of 6
Full-Text Articles in Biomechanics
Effects Of Direction Time Constraints And Walking Speed On Turn Strategies And Gait Adaptations In Healthy Older And Young Adults, Dennis Torre
Seton Hall University Dissertations and Theses (ETDs)
Hip fractures can be life-threatening, debilitating, and costly. The odds for hip fracture increases from impact of sideways falls. While turning has been strongly associated with hip fracture & sideways falls, the distinction between the risks for walking-turns as opposed to low-velocity in-place turning is not clear. The present study sought to fill a gap as previous research had not compared walking-turn performance in young & healthy older adults at low-fall risk within the same study and response-conditions of speed interacting with direction-cue time constraints. Spatial-temporal variables representative of AP braking/propulsion (i.e. stride-length & speed) & ML stability (left/right H-H …
Quantifying Gait Adaptability: Fractality, Complexity, And Stability During Asymmetric Walking, Scott W. Ducharme
Quantifying Gait Adaptability: Fractality, Complexity, And Stability During Asymmetric Walking, Scott W. Ducharme
Doctoral Dissertations
Successful walking necessitates modifying locomotor patterns when encountering organism, task, or environmental constraints. The structure of stride-to-stride variance (fractal dynamics) may represent the adaptive capacity of the locomotor system. To date, however, fractal dynamics have been assessed during unperturbed walking. Quantifying gait adaptability requires tasks that compel locomotor patterns to adapt. The purpose of this dissertation was to determine the potential relationship between fractal dynamics and gait adaptability. The studies presented herein represent a necessary endeavor to incorporate both an analysis of gait fractal dynamics and a task requiring adaptation of locomotor patterns. The adaptation task involved walking asymmetrically on …
The Effect Of Repetitive Head Impacts On Postural Control Over The Course Of A Single Season, Katelyn E. Grimes
The Effect Of Repetitive Head Impacts On Postural Control Over The Course Of A Single Season, Katelyn E. Grimes
Electronic Theses and Dissertations
INTRODUCTION: Recently neurocognitive dysfunction has been linked to poor postural control in concussed athletes. While the detrimental effect of repetitive head impacts on cognitive function have been shown to mirror the effects of concussive injury, very little research has investigated the physical consequences of repetitive head impacts. PURPOSE: To observe the effects of RHI on postural control, both static and dynamic, in NCAA Division I athletes over the course of a single season. METHODS: 9 NCAA Division I football athletes (CON) were recruited from a single university as the experimental group, as well as 9 NCAA Division I baseball players …
The Effects Of A Concussion On Dynamic Stability And Cognitive Performance During Single And Dual Task Tandem Gait, Erin Lodwick
The Effects Of A Concussion On Dynamic Stability And Cognitive Performance During Single And Dual Task Tandem Gait, Erin Lodwick
Cal Poly Humboldt theses and projects
PURPOSE: It is estimated that between 1.6 and 3.8 million concussions occur in the United States every year during competitive sports. To limit the risk of returning an athlete to play too soon a sensitive and reliable assessment is needed. Static balance assessments that are used currently only detect very short term balance deficits (1-3 days). The purpose of this study is to examine the effects of a concussion on dynamic stability and more specifically if those effects are seen to a greater degree with the addition of a secondary cognitive task. METHODS: This study used 18 Humboldt State University …
Differences In The Muscle Activity For Baseball Hitters Of Varying Skill, Ethan M. Stewart
Differences In The Muscle Activity For Baseball Hitters Of Varying Skill, Ethan M. Stewart
Theses and Dissertations--Kinesiology and Health Promotion
INTRODUCTION: Muscle activity and timing of the swing phases may contribute to the differences we see in athletes at different skill levels. The purpose of this study is to analyze the differences between mean muscle activity, peak muscle active and time to peak muscle activity for select muscles in the lower extremity as well as the differences between start times for swing phases and bat velocity prior to impact for a skilled and recreational group. METHODS: Twelve healthy subjects were split into two groups based on competitive level and analyzed hitting off of a tee. RESULTS: No significant differences were …
Are Maximum Ground Forces And Leg Compression In Phase? A Test Of The Classical Spring Mass Model Of Running Gaits, Seth Donahue
Are Maximum Ground Forces And Leg Compression In Phase? A Test Of The Classical Spring Mass Model Of Running Gaits, Seth Donahue
Graduate Student Theses, Dissertations, & Professional Papers
The mechanical understanding of human running has classically been described as a spring-mass system, with subsequent models predicting the movements of the body’s center of mass and the forces applied by the leg against the ground. A central requirement of any spring system is the phasic relationship between the length of the elastic elements and the forces applied to these structures. Specifically, elastic elements compress under load and extend as the load is released. We tested whether this model applies to individuals with specialization for extreme performance in human gait. Recent work from elite level sprint runners suggest that their …