Abstract
The effects of exercise on renal function were studied in 11 male bicyclists, using
a bicycle ergometer. At a work intensity of 100/150 W, bicycle exercise for 1 h was
associated with a significant increase in urine volume, endogenous creatinine clearance,
and renal sodium and potassium excretion. In contrast, exercise of the same duration
at a work intensity of 150/200 W produced no significant changes in the above variables.
Exercise intensity seems to influence renal responses, presumably through a differential
effect on renal blood flow.
Key words
bicycling - diuresis - physical exercise - renal function - sodium excretion