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Kinesiology

Open Access Dissertations

Running

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Adaptations To Running While Footwear Cushioning And Surface Are Manipulated, Trampas M. Tenbroek May 2011

Adaptations To Running While Footwear Cushioning And Surface Are Manipulated, Trampas M. Tenbroek

Open Access Dissertations

Minimal footwear sales have encountered rapid growth over the last several years. Minimal footwear are often constructed with thin basic uppers and thin, flexible midsoles. It is likely that running in minimal footwear will require adaptation and adjustments as the amount of cushioning and the geometry of the foot/ground interface will be substantially different than what many are accustomed to. This research investigated the effect footwear cushioning amount and the running surface had on running patterns. Study 1 (Chapter IV) utilized two different running footwear conditions and two different cushioned treadmill conditions, as well as a barefoot condition, to ...


Consequence Of Functioning At The End Range Of Joint Motion: Implications On Anterior Knee Pain, Pedro A. Rodrigues May 2011

Consequence Of Functioning At The End Range Of Joint Motion: Implications On Anterior Knee Pain, Pedro A. Rodrigues

Open Access Dissertations

“Excessive” and/or “delayed” subtalar joint (STJ) pronation has been linked to overuse injuries because of its influence on tibial internal rotation (TIR). The transfer of STJ pronation to TIR occurs via the talocrual joint, believed to have limited transverse plane motion. However, studies have shown the talocrural joint to have more transverse plane motion than once believed, therefore it is feasible that the STJ will only influence the motion of the tibia once this motion has been exhausted.

Currently, studies evaluating this relationship have focused on peak joint angles and excursion without reference to the amount of motion available ...


Optimal Control Of Human Running, Ross Herbert Miller May 2011

Optimal Control Of Human Running, Ross Herbert Miller

Open Access Dissertations

Humans generally use two modes of locomotion as adults. At slow speeds we walk, and at fast speeds we run. To perform either gait, we use our muscles. The central questions in this dissertation were: (1) Why do humans run the way they do, and (2) How do the mechanical properties of muscle influence running performance? Optimal control simulations of running were generated using a bipedal forward dynamics model of the human musculoskeletal system. Simulations of running and sprinting were posed as two-point boundary value problems where the muscle excitation signals were optimized to maximize an optimality criterion. In the ...