3. Results
The median frequency immediately after the exercise was significantly
lower than the median frequency at the pre-exercise stage in all groups
(Fig. 7). There were significant differences between the median frequency
at pre-exercise and immediately after the exercise due to
fatigue in all groups (p < 0.005). The median frequency of all participants
recovered to the median frequency level of the pre-exercise during the
recovery period. At approximately 8 minutes and 10 minutes
after exercise, the median frequency of the nonstimulation group
was close to the median frequency at the pre-exercise stage. The median frequency of the
manual acupuncture group at approximately 6 minutes and
8 minutes after exercise was similar to the median frequency at the preexercise
stage. At about 4 minutes and 6 minutes after
exercise, the median frequency of the electromagnetic acupuncture group returned to the median frequency at the
pre-exercise. It was observed that the electromagnetic acupuncture group had a
significantly faster recovery time compared to the other
groups.
The results of the contrast test on the median frequency indicated that
the median frequency at 8 minutes after exercise in the nonstimulation
group was significantly recovered to the median frequency at the preexercise
(p Z 0.511). The median frequency at 6 minutes after exercise
was significantly closed to the median frequency at the pre-exercise in the
manual acupuncture group (p Z 0.530). In the electromagnetic acupuncture group,
the median frequency at 4 minutes after exercise was significantly similar
to the median frequency at the pre-exercise.
The peak torque of the three groups immediately after
exercise decreased significantly. However, we observed
that the peak torque did not increase up to the peak torque
at the pre-exercise until 20 minutes after exercise. As a
result, significant recovery was not found in all groups
(Fig. 8). The results of the contrast test on the peak torque
indicated that all three groups during the recovery period
did not recover to the peak torque at the pre-exercise
(p < 0.05).