In a group of individuals with knee OA, greater knee extension rate of torque development associated with faster 20-meter walking pace and lower stair climb times. Knee extension rate of torque development was not significantly associated with 30-second chair stand test scores, and two of the three measures of RTD were not associated with faster stair climb times. There were no significant associations between knee extension RTD and self-reported function, measured with the
WOMAC Function Index and SF-12 assessment.
While knee extension rate of torque development in isolation was not significantly associated with all outcome measures of physical function, the
association between knee extension rate of torque development and faster walking speeds among individuals with knee OA is significant and warrants further research. Because walking speed is an important indicator of future health outcomes among older adults with knee OA, better understanding its association with measures such as rate of torque development may be beneficial in improving quality of life and overall health in this population.
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