Bryson Nakamura

Bryson Nakamura
University of Oregon | UO · Department of Human Physiology

PhD

About

12
Publications
817
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66
Citations

Publications

Publications (12)
Article
Objective: To investigate whether lower extremity muscle activation patterns differ in the strides leading to locomotive state transitions in the involved limb of individuals with transtibial amputation. It was hypothesized that all transitions would elicit activation differences between strides as the subjects moved toward the transition event....
Article
Locomotor state transitions are challenging for transfemoral (TF) amputees due to the lack of active knee control even in the current powered prosthetic devices. Myoelectric activation has been used successfully to classify steady-state locomotion states, but classification of transitions between locomotion states remains a challenge, especially fo...
Article
Electromyogram (EMG) signal representation is crucial in classification applications specific to locomotion and transitions. For a given signal, classification can be performed using discriminant functions or if-else rule sets, using learning algorithms derived from training examples. In the present work, a spectrogram based approach was developed...
Article
Full-text available
Identification of the toe off event is critical in many gait applications. Accelerometer threshold based algorithms lack adaptability and have not been tested for transitions between locomotion states. We describe a new approach for toe off identification using one accelerometer in over ground and ramp walking, including transitions. The method use...
Article
Women’s shoes are known to be constructed from the same parameters as men’s shoes but on a smaller scale. However, foot and gait characteristics are different between genders The purpose of this study was to determine if mid-sole design has an effect on ground reaction force characteristics during running, cutting and jumping motions. Twenty-two ap...
Article
Full-text available
The purpose of this study was to determine the difference between genders in body position during jumping movements while wearing shoes with varying midsoles. Twenty-two apparently healthy female and seven males voluntarily participated in this study. Subjects were current or recently graduated NCAA division III athletes of weight bearing sports an...

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