PHYSICAL-ACTIVITY, PHYSICAL-FITNESS, AND CORONARY HEART-DISEASE RISK-FACTORS

The relationships between physical activity, physical fitness, and cor onary heart disease risk factors measured in a large community sample were evaluated. Self-reported physical activity using a single questio n, maximal oxygen consumption estimates derived from the pawtucket Hea rt Health Step Test, blood pressure, nonfasting lipids, and body mass index were cross-sectionally evaluated in 381 men and 556 women. The c orrelation of estimated maximal oxygen consumption and self-reported p hysical activity was modest but statistically significant (r = 0.13 in men and r = 0.19 in women). Blood pressure, body mass index, and HDL cholesterol were correlated with physical fitness (r = 0.24-0.65) and correlated to self-reported physical activity (r = 0.09-0.14). Evaluat ion of coronary heart disease risk factors using both physical activit y and physical fitness revealed a complex relationship that generally showed a stronger relationship with measures of physical fitness than with physical activity. This study suggests that simultaneous measurem ent of physical activity and physical fitness may be useful in epidemi ologic studies of habitual physical activity and chronic disease.