Table 5.

Coefficients of determination and their changes for two regression models used to predict sudomotor responses during light and moderate exercise

			Slope Coefficients
Dependent Variable	Model	Intercept, Constant	ΔT̄b	∑skf	V̇o2peak	Specific AD	r2	Δr2
Light work
Whole-body sweat rate	1	61.97	−166.48	1.23	1.17		0.28*
	2	669.97	−133.66	0.10	0.57	−1.95	0.51*	0.23†
Dorsal hand sweat rate	1	−0.65	−0.49	0.01	0.01		0.24*
	2	1.60	−0.37	0.01	0.01	−0.01	0.31*	0.07
Dorsal forearm sweat rate	1	−0.21	−0.48	<0.01	<0.01		0.26*
	2	1.54	−0.39	<0.01	<0.01	−0.01	0.43*	0.17†
Forehead sweat rate	1	0.07	−0.55	0.01	<0.01		0.09
	2	3.88	−0.35	<−0.01	0	−0.01	0.28*	0.19†
Dorsal hand thermosensitivity	1	4.08	−2.50	<−0.01	−0.01		0.05
	2	22.38	−1.51	−0.03	−0.03	−0.06	0.29*	0.24†
Dorsal forearm thermosensitivity	1	1.84	−2.36	0.01	<0.01		0.11
	2	8.74	−2.01	−0.01	−0.01	−0.02	0.19	0.09
Forehead thermosensitivity	1	−0.29	−1.16	0.03	0.02		0.06
	2	16.29	−0.26	<−0.01	<0.01	−0.05	0.24	0.18†
Moderate work
Whole-body sweat rate	1	228.51	33.77	2.02	1.97		0.04
	2	2,514.69	−5.16	−2.15	−0.59	−7.05	0.57*	0.53†
Dorsal hand sweat rate	1	−0.06	0.35	0.01	0.03		0.12
	2	3.33	0.30	0.01	0.01	−0.01	0.19	0.07
Dorsal forearm sweat rate	1	0.04	−0.14	0.01	0.01		0.09
	2	2.17	−0.18	0.01	0.01	−0.01	0.13	0.04
Forehead sweat rate	1	1.20	−0.49	0.01	0.01		0.04
	2	9.98	−0.64	<−0.01	0	−0.03	0.17	0.13†
Dorsal hand thermosensitivity	1	1.65	−2.69	0.03	0.02		0.25*
	2	9.73	−2.83	0.01	0.01	−0.03	0.35*	0.10†
Dorsal forearm thermosensitivity	1	−0.10	0.15	0.02	0.01		0.11
	2	5.53	0.05	0.01	0.01	−0.02	0.16	0.04
Forehead thermosensitivity	1	−0.44	0.40	0.02	0.04		0.06
	2	17.16	0.10	−0.01	0.02	−0.05	0.29*	0.23†

r², coefficient of determination; Δr², change in coefficient of determination. Model 1 included the change in mean body temperature (ΔT̄_b), height-adjusted sum of skinfolds (∑skf), and peak oxygen consumption (V̇o_2peak), whereas model 2 included those variables as well as the mass-specific surface area (specific A_D).

^*Significant predictors of thermoeffector responses; † significant changes in r² between the two models (P < 0.05).