Trade-union care for holidays in Czechoslovakia: effects of the standard regimen and of diet and/or exercise on health and fitness.
D000328:Adult; D003604:Czechoslovakia; D004032:Diet; D006262:Health; D006304:Health Status; D006801:Humans; D007750:Labor Unions; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D010809:Physical Fitness; D011998:Recreation