Key result
Resisted and rapid exercises increase post-CVA muscle output but fail to improve immediate ROM.
Why the study?
Does the type of exercise affect finger extension muscle recruitment and range of motion in post-CVA patients?
Does the type of exercise affect finger extension muscle recruitment and range of motion in post-CVA patients?
Different types of exercise recruit different finger extensor muscles in post-CVA patients, but none produce immediate changes in range of motion or hand opening time.
Resisted/rapid exercises may aid recruitment in post-CVA finger extension without immediate ROM gains; leaves open optimal dosing for functional recovery.
The choice of activity to improve finger extension of post-CVA patients is based on untested assumptions and hypotheses. In this study, using electromyography of the extrinsic finger muscles and electrogoniometry of wrist and finger joints, the effects of five types of exercise on the finger extension of post-CVA patients were documented. Results indicated that resisted and rapid exercises recruited high percentages of output of all three muscles. Slow, unresisted extension exercises preferentially recruited the extensor digitorum. No exercise caused significant immediate changes in range of motion (ROM), flexor/extensor balance, time required to open the hand, or level of activity of the extensor digitorum during opening of the hand. Resisted grasp did not limit the patients' ability to extend the fingers. Variability in percent of motor output among the subjects of this study indicates the need to monitor each patient during therapy.
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Trombly et al. (1983) studied Cerebrovascular Accident (CVA). Five types of exercise (including resisted, rapid, and slow unresisted extension) was evaluated on Muscle recruitment (electromyography) and immediate changes in range of motion (electrogoniometry). Five types of exercise in post-CVA patients showed that resisted and rapid exercises recruited high muscle output, but none caused significant immediate changes in range of motion.
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