Discussion
fatigue
The findings of the present study showed that repeated CMR (dose-related) improves specific endurance of futsal and lower limb explosive power (These findings are consistent with some previous findings. For example, it has been reported that repeated CMR can be effective for increasing the distance covered (30-min cycling time trials/30-min arm crank time trials) [In intermittent performance such as futsal, the effects of fatigue on performance are shown by reducing the work rate and it has a negative effect on important indicators of the game such as sprints, jumps, and kicks [The findings of the present study showed that the vertical jump performance of all four conditions decreased significantly compared to the baseline immediately after the FIET, but the decrease in the vertical jump height in the HDC and LDC conditions was less than the CON (It should be mentioned that the results revealed that a placebo can also be effective in improving FIET and vertical jump performance (at baseline CMR, IA-FIET, 5”A-FIET and 10”A-FIET) compared to CON (The present study has some limitations, such as the lack of measurement central/peripheral fatigue parameters. In addition, due to financial and time constraints, the authors of this study could not use the counterbalance design method to eliminate the order effect. Therefore, future studies should include the evaluation of these variables to expand on our findings.