Table 2.
Performance, physiological, and psycho-physical responses during heat acclimation sessions averaged across Days 1–4 and Days 5–9.
| Days 1–4 | Days 5–9 | |
|---|---|---|
| Mean power output (W) | 108 ± 17 | 117 ± 21∗ |
| Mean Trec75 (°C) | 38.4 ± 0.2 | 38.2 ± 0.2∗ |
| Resting Trec (°C) | 37.3 ± 0.4 | 37.2 ± 0.2 |
| Peak Trec (°C) | 38.6 ± 0.2 | 38.5 ± 0.2∗ |
| ΔTrec (°C) | 1.4 ± 0.4 | 1.2 ± 0.3 |
| Peak Tsk (°C) | 35.5 ± 0.9 | 35.0 ± 1.0∗ |
| Mean HR (beats ⋅ minute−1) | 150 ± 6 | 145 ± 6∗ |
| Mean %HRmax (%) | 78 ± 3 | 75 ± 4∗ |
| SRBSA (g ⋅ h−1 ⋅ m−2) | 694 ± 105 | 705 ± 143 |
| Sweat loss (%BM) | 2.9 ± 0.5 | 2.9 ± 0.6 |
Data are presented as mean ± SD. Trec, rectal temperature; Trec75, mean rectal temperatures recorded during the final 75-min of the session; ΔTrec, maximal change in rectal temperature during exercise from rest; HR, heart rate; %HRmax, percentage of age-estimated maximum heart rate; SRBSA, estimated sweat rate relative to body surface area; %BM, percentage of body mass. ∗Significantly different from Days 1–4 (p < 0.05).