Table 1. Cardiorespiratory variables and body temperatures during each sprint and average of all sprints.
Sprint number ANOVA (ηp2)
1 2 3 Average Interaction Condition Time
Peak HR
(bpm)
CON 155 ± 4 162 ± 5 * 166 ± 4 * 161 ± 4
HYP 155 ± 4 161 ± 4 * 164 ± 4 * 160 ± 4 0.648 < 0.001 < 0.001
HH 166 ± 5 172 ± 4 * 174 ± 4 * 171 ± 4 (0.082) (0.852) (0.938)
Lowest SpO2
(%)
CON 90.7 ± 1.4 89.1 ± 2.2 92.0 ± 1.1 90.6 ± 1.4
HYP 81.6 ± 1.1 83.3 ± 1.1 83.7 ± 0.7 82.9 ± 0.8 0.094 < 0.001 0.703
HH 83.9 ± 1.4 83.8 ± 1.2 82.0 ± 1.7 83.2 ± 1.2 (0.240) (0.735) (0.049)
VO2
(mL/min)
CON 940 ± 84 1253 ± 45 * 1253 ± 50 * 1149 ± 40
HYP 831 ± 71 1042 ± 81 * 1067 ± 50 * 980 ± 52 0,888 0,018 0,012
HH 815 ± 105 1034 ± 34 1045 ± 72 965 ± 42 (0.039) (0.435) (0.612)
Muscle
temperature
(°C)
CON 36.1 ± 0.7 36.5 ± 0.6 * 36.8 ± 0.5 * 36.5 ± 0.2
HYP 36.0 ± 0.6 36.5 ± 0.5 * 36.8 ± 0.4 * 36.4 ± 0.2 0.089 < 0.001 < 0.001
HH 37.1 ± 0.3 37.3 ± 0.3 * 37.5 ± 0.3 * 37.3 ± 0.1 (0.266) (0.663) (0.927)
Skin
temperature
(°C)
CON 31.9 ± 0.2 32.2 ± 0.2 * 32.4 ± 0.2 * 32.1 ± 0.2
HYP 31.7 ± 0.2 32.0 ± 0.2 * 32.3 ± 0.2 * 32.0 ± 0.2 < 0.001 < 0.001 0.001
HH 35.6 ± 0.1 35.1 ± 0.1 * 35.0 ± 0.1 * 35.2 ± 0.1 (0.739) (0.963) (0.573)
‡: P < 0.05 vs. HYP
*: P < 0.05 vs. the first sprint,
†: P < 0.05 vs. CON,
Values are means ± standard error of the mean.