Factors contributing to intra individual variation of serum constituents: 2. Effects of exercise and diet on variation of serum constituents in healthy subjects

Abstract

A previous report of within day variation of serum constituents was based on values in healthy subjects who did not undergo strenuous exercise and who were in a fasting state. In this study the effects of exercise and of a noon meal on the same serum constituents is considered. The statistical significance (t test) was computed on the basis of the ratios of values (after/before) on the day of exercise vs. the ratios on the nonexercise day, or, for the effect of meal, the ratios of values (after/before the noon meal) on the eating day vs. the ratios of values taken at the same hour on the fasting day. Significant effects seen after exercise (P