8 Department of Exercise Science and Athletic Therapy, Concordia University, Montreal, Canada 9 Department of Mathematics and Statistics, McGill University, Montreal, Canada Background Proper ...
Flexion and extension refer to directions of motion that affect the angle of a joint. Flexion is when the joint is closed, while extension is when it is opened. Flexion and extension are the two ...
Lawrence W. Schneider, David R. Foust, Bruce M. Bowman, Richard G. Snyder, Don B. Chaffin, Thomas A. Abdelnour, Janet K. Baum https://www.jstor.org/stable/44633649 ...
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