Table 3.

Correlation coefficients between mass-specific surface area and indirectly derived heat exchanges, and sudomotor sensitivity during light and moderate exercise

	Light Work	Moderate Work
Heat production and exchange, W
Metabolic heat production, metabolic − external work rate	−0.64	−0.67
Dry-heat loss, Eq. 2	−0.51	−0.55
Evaporative-heat loss, mass loss	−0.55	−0.73
Evaporative heat-loss requirement, Eq. 7	−0.48	−0.56
Sudomotor sensitivity, mg·cm−2·min−1·°C−1
Dorsal hand	−0.46	−0.42
Dorsal forearm	−0.33	−0.37
Dorsal forehead	−0.47	−0.51

Only correlations that were statistically significant are included (P < 0.01). Negative correlations between heat exchanges expressed in absolute terms and mass-specific surface area were expected, and reflect the increases in body surface area that accompany decreases in mass-specific surface area. Correlations between heat exchanges normalized to body surface area and the mass-specific surface area did not approach significance (P > 0.05).