Abstract
We determined the correlation between the status of coronary atherosclerotic heart disease (CAHD) risk factors and aerobic power, and provided the threshold level of aerobic power to keep the CAHD risk factors to lower level. We measured the aerobic power (predicted maximal oxygen uptake per kilogram of body weight: VO2 max/wt), percent body fat (%Fat), blood pressure (SBP/DBP), total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C) and TC/HDL-C ratio in 123 healthy male aged 22 to 70 years.
Significant correlations were observed between VO2 max/wt and CAHD risk factors except TC (p<0.001). The partial correlations adjusted for age and %Fat between VO2 max/wt and TG (p<0.001), HDL-C (p<0.01) and TC/HDL-C ratio showed significant correlations (p<0.05). VO2 max/wt corresponding to border line values of CAHD risk factors were similar values. The highest VO2 max/wt (36.6ml/kg·min) was adopted as the lowest aerobic power level (critical point: CP) which is necessary to keep CAHD risk factors at low level. Then, the subjects were divided into good group (above CP) and poor group (below CP) by using CP. Good group showed significant lower %Fat, SBP, DBP, TG and TC/HDL-C ratio than those of poor group (p<0.001), while HDL-C was higher in good group than in poor group (p<0.001). Good group had one or two CAHD risk factors, whereas poor group had more than three CAHD risk factors. The subjects with ischemic change on ECG were mainly observed in poor group. These results suggest that predicted VO2 max/wt (36.6ml/kg·min) corresponding to the borderline values of CAHD risk factors is a useful parameter of CAHD risk factors.
