[The epidemiology of ischemic heart disease in men and women 25 to 54 in relation to their levels of physical activity].

A one-stage populational study of a random representative sample of the nonorganized community of Novosibirsk was carried out within the framework of the WHO CINDI and MONICA projects. There were 1235 men and 1113 women aged 25-54 years. The prevalence of coronary heart disease and the main risk factors was studied in quartiles of energy losses distribution during occupational physical activity (OPA) and physical activity at leisure (PAL). The men demonstrated a nonlinear relationship between the prevalence of the painless form of CHD and the level of OPA, which manifested in a considerable increase of the incidence of that CHD form in the 2nd and 4th quartiles of OPA (Friedman's criterion S = 69, p < 0.003). The women showed a nonlinear relationship between CHD prevalence on the whole and the level of OPA, characterized by a noticeable increase of the incidence of the above-indicated form of CHD in the 2nd and 4th quartiles of OPA (S = 62, p < 0.02). Besides, the women demonstrated an increase in the incidence of CHD on the whole in the 4th quartile of PAL (S = 69, p < 0.003).