Effect of carbon monoxide on maximal treadmill exercise. A study in normal persons.


The effect of breathing 100 ppm of carbon monoxide versus compressed, purified air for 1 h on maximal treadmill exericse was studied (double-blind crossover design) in 10 middle-aged, healthy nonsmokers. The mean venous carboxyhemoglobin level significantly increased from 1.67% to 3.95% after breathing carbon monoxide (P less than 0.001) and significantly… (More)


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