Assessing the Therapeutic Effect of 630 nm Light-Emitting Diodes Irradiation on the Recovery of Exercise-Induced Hand Muscle Fatigue with Surface Electromyogram
Figure 2
The changes of the mean normalized ARV (±SE) over the normalized contraction time during the prefatigue (a) and refatigue (b) tasks of the LEDT group and the prefatigue (c) and refatigue (d) tasks of the passive rest group. The symbol “*” indicates that the difference between the mean normalized ARV values of the two groups in the corresponding normalized contraction time is statistically significant.
