The increases in MPV in the severely hypohydrated group (i.e., S-HYP) was higher than in the EUH and HYP groups (7.3 ± 2.6 % compared to −3.4 ± 2.6 % for EUH and 0.2 ± 1.4 % for HYP; p < 0,001; Fig. 4a). Likewise, significantly higher CMJ power increases were detected in the S-HYP group (2.8 ± 3.9 %) compared to EUH (−0.6 ± 4.7 %; ES = 0.79; p < 0.001) and close to significance when compared to HYP (1.1 ± 3.1 %; ES = 0.49; p = 0.08; Fig. 4b). No significant differences were detected in the relative changes of maximum grip strength for dominant or non-dominant hands, neither between PRE and POST values, nor between groups (EUH, HYP and S-HYP) at any time point (Fig. 4c).