Metabolism
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Breathless after sprinting
WS is a sprinter; he weighs 75 kg. At the end of a 100 m race he is breathing rapidly and deeply, and continues to do so for several minutes. His plasma lactate and pyruvate were measured before and immediately after the race, and again 30 min later, when his breathing had returned to normal.
lactate (mmol /L) |
pyruvate
(mmol /L) |
|
| before the race | 0.5 |
0.11 |
| immediately after | 11.5 |
0.09 |
| 30 minutes later | 1.0 |
0.12 |