Relation between plasma K+ and ventilation during incremental exercise after glycogen depletion and repletion in man.

摘要: 1. We have examined the relationship between expiratory ventilation (VE), plasma potassium concentration ([K+]P), blood lactate ([Lac-]B), and pH (pHP) in five trained men before after glycogen depletion repletion two successive incremental bicycle ergometer tests (tests A B). 2. Though pHP was significantly higher (in relation to normal or repleted conditions) VE [K+]P also tended be higher. 3. There no constant magnitude direction of change lactic acidosis, [K+]P, respectively. Instead, a close temporal changes found. 4. non-linear increase occurred independently [Lac-]B, but could well predicted from [K+]P. 5. These findings indicate that acidosis had deciding effect on exercise these experiments. They are consistent with idea may contribute ventilatory drive during exercise.