Table 1 Mean heat strain responses in the 5 thermal environments

Variable / WBGT (°C)

18

22

27

28.5

31

T _RE (°C)

37.5

37.4^ns

37.7^##

38.1^§

38.5^¥

T _SK (°C)

34.1

35.2^ΔΔ

36.4^##

37.4^§§

37.3^ns

M _TOT (kg.h^-1)

0.2

0.3^Δ

0.4^#

0.6^§§

0.7^ns

HR/↑HR [vs WBGT 18] (b.min^-1)

88/0

91^ns/3^ns

103/14^##

118/30^§

129/41^{ns (p = 0.08)}

TS¹/TC²

1.1/0.5

1.4^ns/0.8^ns

2.1^#/0.9^ns

3.0^§/2.1^§§

3.3^ns/2.1^ns