Jae Kyun Bang and Sung Jae Hwang and Chang Yong Ko and Chi Hyun Kim
Heat Treatment and RestInserted Exercise Enhances EMG Activity of the Lower Limb
164 - 167
2007
1
11
International Journal of Biomedical and Biological Engineering
https://publications.waset.org/pdf/4505
https://publications.waset.org/vol/11
World Academy of Science, Engineering and Technology
Prolonged immobilization leads to significant
weakness and atrophy of the skeletal muscle and can also impair the
recovery of muscle strength following injury. Therefore, it is
important to minimize the period under immobilization and accelerate
the return to normal activity. This study examined the effects of heat
treatment and restinserted exercise on the muscle activity of the lower
limb during knee flexionextension. Twelve healthy subjects were
assigned to 4 groups that included (1) heat treatment restinserted
exercise; (2) heat continuous exercise; (3) no heat restinserted
exercise; and (4) no heat continuous exercise. Heat treatment was
applied for 15 mins prior to exercise. Continuous exercise groups
performed knee flexionextension at 0.5 Hz for 300 cycles without rest
whereas restinserted exercise groups performed the same exercise but
with 2 mins rest inserted every 60 cycles of continuous exercise.
Changes in the rectus femoris and hamstring muscle activities were
assessed at 0, 1, and 2 weeks of treatment by measuring the
electromyography signals of isokinetic maximum voluntary
contraction. Significant increases in both the rectus femoris and
hamstring muscles were observed after 2 weeks of treatment only
when both heat treatment and restinserted exercise were performed.
These results suggest that combination of various treatment techniques,
such as heat treatment and restinserted exercise, may expedite the
recovery of muscle strength following immobilization.
Open Science Index 11, 2007