Table 3.
Exercise With Cooled Leg, W |
Exercise With Heated Leg, W |
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---|---|---|---|---|---|---|---|---|---|---|
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.