Transcranial Magnetic Stimulation in the Assessment of Acupuncture
Effect on Exercise-Induced Fatigue
Abstract
This study aims to evaluate the acupuncture effect on exercise-induced
fatigue utilizing transcranial magnetic stimulation (TMS). A total of 20
sports enthusiasts were recruited in this study, all participants would
be assigned to receive acupuncture and sham acupuncture intervention on
exercise-induced fatigue randomly. TMS and heart rate monitor would be
used to measure the amplitude and latency of motor evoked potential
(MEP) and heart rate every 5 minutes over a 30-minute period. Lactate
Scout+ was used to measure the blood lactic acid (BLA) in baseline, 0
minutes and 30 minutes after fatigue. Two-way repeated measures ANOVA
was used to compare the difference between acupuncture method and time
effects. Bonferroni post hoc tests were conducted to compare specific
differences. Significance was set at P < 0.05. Interaction
effect was found between acupuncture method and time effect in amplitude
(F (1, 38) = 5.40, P < 0.001, η2 = 0.12) and latency (F (1,
38) = 3.78, P = 0.008, η2 = 0.09) of MEP. Acupuncture intervention can
promote the recovery of heart rate especially at 30 minutes (P
< 0.05), but which seem insufficient to generate significant
difference in BLA (F (1, 38) = 0.067, P = 0.797, η2 = 0.002).
Preliminary findings provide new perspectives for sports enthusiasts to
relieve fatigue and reduce the inhibition of motor cortex excitability
utilizing acupuncture.