Table 3.
Mean exercise cardiovascular, metabolic, thermoregulatory and perceptual measurements during HST1 and HST2.
| HST 1 | HST 2 | |||||
|---|---|---|---|---|---|---|
| Variable | CON | HYP | HOT | CON | HYP | HOT |
| HR (bts.min−1) | 139 ± 5 | 145 ± 15 | 140 ± 14 | 140 ± 8 | 144 ± 16 | 131 ± 9# |
| Stroke volume (mL.bt−1) | 104 ± 12 | 112 ± 13 | 99 ± 10 | 103 ± 11 | 107 ± 8 | 103 ± 11 |
| Cardiac output (L.min−1) | 14.5 ± 1.8 | 16.1 ± 1.9 | 13.8 ± 1.3 | 14.3 ± 1.9 | 15.8 ± 1.4 | 13.5 ± 1.1 |
| SpO2 (%) | 82 ± 4 | 82 ± 2 | 83 ± 3 | 82 ± 3 | 83 ± 3* | 85 ± 2# |
| Oxygen pulse (mL.bt−1) | 12.6 ± 2.3 | 11.8 ± 1.3 | 11.5 ± 1.4 | 12.6 ± 2.1 | 11.7 ± 1.4 | 12.2 ± 1.4* |
| VE BTPS (L.min−1) | 60.8 ± 10.4 | 63.2 ± 10.1 | 60.8 ± 5.0 | 59.2 ± 12.6 | 65.0 ± 9.0 | 58.8 ± 3.2 |
| V°O2 | 1.76 ± 0.34 | 1.71 ± 0.26 | 1.60 ± 0.10 | 1.77 ± 0.35 | 1.68 ± 0.22 | 1.60 ± 0.14 |
| V°CO2 | 1.69 ± 0.31 | 1.71 ± 0.23 | 1.57 ± 0.13 | 1.65 ± 0.38 | 1.66 ± 0.28 | 1.52 ± 0.12 |
| RER | 0.96 ± 0.06 | 1.00 ± 0.06 | 0.98 ± 0.06 | 0.93 ± 0.08 | 0.98 ± 0.09 | 0.95 ± 0.06 |
| Plasma lactate (mmol−1) | 3.44 ± 1.42 | 3.88 ± 2.08 | 3.25 ± 1.56 | 3.31 ± 1.39 | 3.03 ± 1.09 | 2.50 ± 0.87 |
| Plasma glucose (mmol−1) | 4.87 ± 1.13 | 5.07 ± 0.71 | 4.50 ± 0.98 | 4.65 ± 1.08 | 4.90 ± 1.16 | 4.77 ± 0.68 |
| Trectal(°C) | 37.61 ± 0.14 | 37.72 ± 0.18 | 37.55 ± 0.18 | 37.63 ± 0.11 | 37.69 ± 0.20 | 37.40 ± 0.14# |
| ΔTrectal(°C) | 0.46 ± 0.19 | 0.70 ± 0.12 | 0.44 ± 0.36 | 0.44 ± 0.20 | 0.68 ± 0.20 | 0.32 ± 0.20* |
| PSI (AU) | 4.2 ± 0.5 | 4.8 ± 0.6 | 4.1 ± 0.6 | 4.1 ± 0.6 | 4.8 ± 0.6 | 3.6 ± 0.4# |
| RPE | 13 ± 1 | 12 ± 2 | 12 ± 2 | 12 ± 1 | 10 ± 2 | 11 ± 1 |
| TS | 3.9 ± 0.5 | 4.2 ± 0.8 | 4.3 ± 0.8 | 3.7 ± 0.4 | 4.0 ± 0.4 | 4.0 ± 0.4 |
Data are mean ± SD for all 21 participants.
*
Different from HST1 to HST2 (p < 0.05) within group.
#
Different from HST1 to HST2 (p < 0.01) within group.