Fig. 1.

Yo-Yo intermittent recovery test (YYIRT) performances (total distance covered during the YYIRT [TD_YYIRT] [A], heart rate peak [HR_peak] [B], plasma lactate concentrations [Lac] [C], and rating of perceived exertion scale [RPE] [D]) recorded during the three experimental conditions (reference night [RN], partial sleep deprivation in the beginning of the night [PSDBN], and partial sleep deprivation in the end of the night [PSDEN]). *^,****Significant difference compared to RN (P<0.05, P<0.0005, respectively).