EFFECTS OF SALT INTAKE ON THE BODY IN EXERCISE

Abstract

This study was to examine the effects of quantity of taking salt diet on the body during exercise. The subjects were made to do endurance exercise on each after intake of the moderate-salt diet, the much-salt diet and a little-salt diet in a fixed duration.
The results were obtained as follows:
1) Under the much-salt diet intake, responce of systolic blood pressure and heart rate showed small increment during the exercise.
2) Under a little-salt diet intake, the CK-MB/CK ratio showed large increment during exercise.
3) Under the much-salt diet intake, serum BUN values were decreased compared with under the other diets. Under a little-salt diet intake, serum BUN, Uric Acid and Triglycerides values were increased, on the contrary serum Glucose values were decreased in resting condition. Especially, under a little-salt diet intake, serum BUN values were increased during the exercise.
4) The value of urinary sodium excretion was varied in response to the intake of salt. The value of urinary potassium excretion showed no change under the much-salt diet intake. But it showed decrease under a little-salt diet intake.
5) Under a little-salt diet intake, the creatinine clearance values were decreaced during and after the exercise.
The above mentioned findings suggested that the change of salt intake itself may become a stressor to the body and it is necessary to pay much attention when we exercise under these condition.