The impact of submaximal exercise during heat and/or hypoxia on the cardiovascular and monocyte HSP72 responses to subsequent (post 24 h) exercise in hypoxia

Table 3 Cardiovascular, metabolic, thermoregulatory and subjective data upon termination of exercise across experimental conditions

	Normoxia	Heat	Hypoxia	Combined
Cardiovascular
HR (beats · min^-1)	138 ± 17	168 ± 15^,*	156 ± 13*	174 ± 5^,*
SpO₂ (%)	96 ± 2	95 ± 1	83 ± 1^,**	83 ± 1^,**
Cardiac output (L · min^-1)	16.9 ± 2.5	17.6 ± 2.8	17.3 ± 2.5	17.4 ± 3.2
Stroke volume (mL · beat^-1)	126 ± 33	106 ± 18	112 ± 23	101 ± 16
${a ‒ \bar{v} O}_{2}$ difference	10.95 ± 2	11.96 ± 1	11.97 ± 1.5	11.7 ± 1.2
Plasma volume change (%)	-2.0 ± 5.8	-3.2 ± 10	-1.7 ± 7.3	-2.4 ± 5.4
Metabolic
VO₂ (L · min^-1)	1.98 ± 0.37	2.09 ± 0.33	2.06 ± 0.42	2.02 ± 0.49
VCO₂ (L · min^-1)	1.71 ± 0.34	1.80 ± 0.29	1.91 ± 0.36	1.83 ± 0.35
RER	0.87 ± 0.09	0.86 ± 0.06	0.93 ± 0.07^,**	0.92 ± 0.09^,**
V _E STPD (L · min^-1)	40.5 ± 5.90	46.4 ± 9.30*	53.0 ± 12.2*	52.2 ± 10.70*
V _E BTPS (L · min^-1)	49.6 ± 7.30	56.9 ± 11.8*	63.3 ± 14.1*	62.1 ± 9.90*
Thermoregulatory
T _core (°C)	37.8 ± 0.3	38.7 ± 0.5^,*	38.0 ± 0.3	38.6 ± 0.4^,*
T _skin (°C)	31.4 ± 2.0	36.2 ± 0.9^,*	32.1 ± 1.3	35.8 ± 1.0^,*
T _body (°C)	36.5 ± 0.6	38.1 ± 0.4^,*	36.9 ± 0.3	38.1 ± 0.4^,*
Sweat rate (L · min^-1)	0.48 ± 0.2	1.05 ± 0.2^,*	0.46 ± 0.2	0.91 ± 0.2^,*
PSI (AU)	4.5 ± 0.9	7.6 ± 1.5^,*	5.2 ± 0.7	7.6 ± 1.1^,*
Perceptual
RPE (AU)	14 ± 2	17 ± 2*	17 ± 2*	17 ± 2*
TS (AU)	5 ± 1	7 ± 1	6 ± 1	7 ± 1

*Significantly different from NORM; **significantly different from HYP; ***significantly different from HEAT (p < 0.05).

ISSN: 2046-7648