[Cardiac bioelectrical activity in healthy men during 370-day head-down tilt hypokinesia].

Nine men, aged 27-42 yrs, have been examined during a 370-day head-down tilt (HDT) experiment. The group A test subjects (4 persons) used the countermeasures involving exercises, pharmacological means to correct metabolism, bone tissue and digestive function. The group B test subjects (5 individuals) have embarked on exercising only in 120 days of bedrest.