Table 3.

Blood variable responses to exercise in the heated and cooled leg during systemic and leg heat stress combined with leg cooling (Study 1)

	Exercise With Cooled Leg, W					Exercise With Heated Leg, W
	Rest	12 ± 1	27 ± 1	39 ± 1	50 ± 3	Rest	12 ± 1	27 ± 1	39 ± 1	52 ± 2
Hb, g/l
a	156 ± 8	152 ± 4	151 ± 4	154 ± 4	152 ± 6	152 ± 4	153 ± 4	150 ± 6	152 ± 4	157 ± 4
vh	152 ± 4	152 ± 4	153 ± 4	152 ± 5	161 ± 3	150 ± 4	152 ± 5	149 ± 9	152 ± 6	152 ± 4
vc	152 ± 4	150 ± 4	153 ± 3	152 ± 4	161 ± 4*	153 ± 4	150 ± 5*	153 ± 10	155 ± 4	156 ± 3
O2 saturation, %
a	98 ± 0.2	98 ± 0.3	98 ± 0.2	98 ± 0.2	98 ± 0.2	98 ± 0.4	98 ± 0.2	98 ± 0.4	98 ± 0.2	98 ± 0.2
vh	71 ± 4	61 ± 3	52 ± 4*	52 ± 4*	53 ± 5*	48 ± 6	43 ± 4	36 ± 4	28 ± 3*	27 ± 4*
vc	59 ± 7	37 ± 4*	26 ± 2*	25 ± 3*	21 ± 3*	66 ± 6	59 ± 5	56 ± 3*	52 ± 4*	48 ± 4*
Po2, mmHg
a	105 ± 6	103 ± 4	101 ± 2	106 ± 4	109 ± 3	111 ± 6	100 ± 3	110 ± 10	102 ± 2	105 ± 2
vh	34 ± 1	34 ± 1	31 ± 1	32 ± 2	32 ± 2	30 ± 2	28 ± 2	26 ± 1	23 ± 1	23 ± 2
vc	32 ± 4	23 ± 1*	20 ± 1*	20 ± 1*	20 ± 1*	38 ± 4	32 ± 2	31 ± 2	30 ± 2	29 ± 2
CtO2, ml/l
a	200 ± 4	205 ± 4	204 ± 5	208 ± 4	207 ± 7	206 ± 5	206 ± 5	202 ± 7	205 ± 4	212 ± 5
vh	138 ± 1	127 ± 1	110 ± 1*	108 ± 1*	116 ± 1*	99 ± 1	90 ± 1	75 ± 1*	59 ± 1*	58 ± 1*
vc	127 ± 2	78 ± 1*	55 ± 0.3*	53 ± 0.4*	48 ± 1*	135 ± 2	111 ± 2*	112 ± 1*	110 ± 1*	100 ± 1*
Pco2, mmHg
a	41 ± 1	40 ± 1	42 ± 1	39 ± 2	38 ± 2	36 ± 3	39 ± 2	36 ± 2	39 ± 2	38 ± 2
vh	47 ± 1	49 ± 1	52 ± 1*	53 ± 1*	53 ± 2*	50 ± 2	55 ± 2*	59 ± 2*	64 ± 2*	71 ± 4*#
vc	47 ± 3	56 ± 3*	65 ± 3*	73 ± 4*	80 ± 3*	43 ± 2	44 ± 2	46 ± 2*	48 ± 1*	50 ± 1*
pH
a	7.42 ± 0.01	7.41 ± 0.01	7.39 ± 0.01	7.39 ± 0.01	7.40 ± 0.01	7.41 ± 0.03	7.40 ± 0.01	7.41 ± 0.02	7.39 ± 0.01	7.39 ± 0.01
vh	7.39 ± 0.01	7.37 ± 0.01	7.36 ± 0.01*	7.35 ± 0.01*	7.34 ± 0.01*	7.36 ± 0.02	7.34 ± 0.01	7.31 ± 0.01*	7.29 ± 0.01*	7.25 ± 0.02*#
vc	7.40 ± 0.01	7.33 ± 0.01*	7.29 ± 0.01*	7.25 ± 0.02*	7.21 ± 0.02*	7.36 ± 0.02	7.37 ± 0.02	7.36 ± 0.01	7.36 ± 0.01	7.35 ± 0.01
Glucose, mmol/l
a	6.5 ± 0.4	6.6 ± 0.3	6.6 ± 0.2	6.4 ± 0.2	6.3 ± 0.2	6.6 ± 0.2	6.7 ± 0.3	6.8 ± 0.3	6.8 ± 0.4	6.8 ± 0.4
vh	6.1 ± 0.3	6.1 ± 0.3	6.1 ± 0.2	6.1 ± 0.2	6.0 ± 0.3	6.1 ± 0.3	6.4 ± 0.5	6.3 ± 0.5	6.2 ± 0.6	6.1 ± 0.6
vc	5.9 ± 0.2	6.2 ± 0.3	6.3 ± 0.2	6.1 ± 0.2	6.3 ± 0.3	5.9 ± 0.4	6.2 ± 0.3	6.4 ± 0.4	6.6 ± 0.4	6.6 ± 0.4
Lactate, mmol/l
a	1.5 ± 0.3	1.7 ± 0.3	2.2 ± 0.3*	3.0 ± 0.5*	4.1 ± 0.7*	3.6 ± 0.9	3.4 ± 0.7	3.4 ± 0.7	4.0 ± 0.4	4.7 ± 0.5*
vh	1.4 ± 0.2	1.4 ± 0.2	1.7 ± 0.2	2.2 ± 0.3*	3.3 ± 0.5*	2.9 ± 0.5#	3.4 ± 0.5#	3.5 ± 0.5*	4.0 ± 0.6*	5.3 ± 0.9*
vc	1.4 ± 0.2	2.3 ± 0.3*	3.0 ± 0.4*	4.3 ± 0.6*	6.0 ± 0.8*	4.4 ± 0.9	3.5 ± 0.7	3.4 ± 0.5	3.3 ± 0.5	3.8 ± 0.5

Values are means ± SE for 7 participants (venous samples) and 6 participants (arterial samples). Po₂, Pco₂, and pH were corrected for changes in blood temperature.

^*Significantly different from baseline;

^#significantly different from cooled femoral venous blood during cooled leg exercise. P < 0.05.