Speed, resistance, and unexpected accelerations modulate feed forward and feedback control during a novel weight bearing task
| Autor: | Shih Chiao Tseng, Chu Ling Yen, Michael A Shaffer, Michael A. Petrie, Richard K. Shields, Keith R. Cole |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male medicine.medical_specialty Knee Joint Movement medicine.medical_treatment Acceleration Biophysics Electromyography medicine.disease_cause Article Weight-bearing Task (project management) Weight-Bearing Young Adult 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Reference Values Control theory Task Performance and Analysis Humans Medicine Orthopedics and Sports Medicine Range of Motion Articular Rehabilitation medicine.diagnostic_test business.industry Feed forward 030229 sport sciences Middle Aged Trajectory Female Neuromuscular control business 030217 neurology & neurosurgery |
| Zdroj: | Gait & Posture. 52:345-353 |
| ISSN: | 0966-6362 |
| DOI: | 10.1016/j.gaitpost.2016.12.015 |
| Popis: | We developed a method to investigate feed-forward and feedback movement control during a weight bearing visuomotor knee tracking task. We hypothesized that a systematic increase in speed and resistance would show a linear decrease in movement accuracy, while unexpected perturbations would induce a velocity-dependent decrease in movement accuracy. We determined the effects of manipulating the speed, resistance, and unexpected events on error during a functional weight bearing task. Our long term objective is to benchmark neuromuscular control performance across various groups based on age, injury, disease, rehabilitation status, and/or training. Twenty-six healthy adults between the ages of 19–45 participated in this study. The study involved a single session using a custom designed apparatus to perform a single limb weight bearing task under nine testing conditions: three movement speeds (0.2, 0.4, and 0.6 Hz) in combination with three levels of brake resistance (5%, 10%, and 15% of individual’s body weight). Individuals were to perform the task according to a target with a fixed trajectory across all speeds, corresponding to a ~ 0 (extension) to 30 degrees (flexion) of knee motion. An increase in error occurred with speed (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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