1991 Volume 33 Issue 5 Pages 403-409
We investigated the relationship between serum creatine phosphokinase (CPK) activity and energy expenditure in young adults and evaluated whether serum CPK activity is a useful index of energy expenditure. These data were obtained from 225 (men: 94, women: 131) healthy young adults.
The results of the survey were as follows:
In men, there was a statistically significant correlation between serum CPK activity and energy expenditure (r=0.370; p<0.01; y=1986.0+8.2x), energy expenditure/body weight (r=0.270; p<0.01; y=35.4+0.06x) and daily activity index (r=0.357; p<0.01; y=0.38+0.0030x)
In women, there was a statistically significant correlation between serum CPK activity and energy expenditure (r=0.207; p<0.05; y=1895.0+3.0x), and daily activity index (r=0.194; p<0.05; y=0.432+0.0017x). The higher the proportion of exercising subjects, the higher was the serum CPK activity.
These results suggest that measurement of serum CPK activity can be used to evaluate energy expenditure.
