From: Myocardial functional responses do not contribute to maximal exercise performance in the heat
Variable | Temperate | Heat stress | Difference |
---|---|---|---|
Test time (min) | 16.3 (2.0) | 15.9 (2.0)a | 0.4 (0.4) |
Peak power (W) | 259 (30) | 253 (30)a | 5 (7) |
Maximal heart rate (bpm) (polar) | 187 (8) | 187 (6) | −1 (9) |
End exercise core temperature (°C) | 37.7 (0.4) | 37.7 (0.4) | 0.0 (0.4) |
Rating of perceived exertion | 9.3 (0.7) | 9.5 (0.5) | −0.2 (0.7) |
Thermal sensation | 6.1 (0.8) | 7.2 (0.7)a | −1.1 (0.8) |
Oxygen uptake (L min−1) | 4.07 (0.59) | 3.93 (0.46) | 0.13 (0.30) |
Oxygen uptake (mL kg−1 min−1) | 50.2 (8.7) | 48.6 (8.5) | 1.6 (3.6) |
Respiratory exchange ratio | 1.13 (0.05) | 1.13 (0.06) | 0.00 (0.07) |
Arterial-venous oxygen difference (mL O2 L−1) | 196 (40) | 200 (43) | −4 (42) |