The Duration of Exercise Tolerance in Terms of Circulatory Indices in the Inhabitants of the Sakha Republic (Yakutia) within a Ten-Year Period

The duration of exercise tolerance of the circulatory system in different ethnic populations of Yakutia early in and at the end of the last decade of the 20th century (1988–1989 and 1998–1999) was studied. Compared to the native population (Yakuts), those born in Yakutia (Europoids) demonstrated a higher tolerance at both stages of the study. It was found that the work capacity and exercise tolerance significantly decreased in both ethnic groups during the last decade of the 20th century.