Relationships among cardiorespiratory fitness, regular physical activity, and plasma lipids in young adults.
Relationships between physical activity and plasma lipids and between cardiorespiratory (CR) fitness and plasma lipids were investigated in 152 young adults. There were no significant correlations in either females or males between the physical activity indicators and any of the plasma lipids investigated. CR fitness, as indicated by treadmill test duration, showed a small but statistically significant sexes, an association that may well underestimate the true relationship because of the limitations of the study. Plasma triglycerides were negatively correlated with CR fitness in the males. It was suggested that the two fitness components, aerobic capacity and percent fat, may be related to certain plasma lipids differently in males than in females.