title: [Physical fitness of persons doing mental work at different ages].
mesh_terms: D000328:Adult; D000367:Age Factors; D006801:Humans; D008297:Male; D008875:Middle Aged; D009790:Occupations; D010809:Physical Fitness
vernacular_title: Fizicheskaia rabotosposobnost' lits umstvennogo truda razlichnogo vozrasta.