[Rationale for energy requirements in adolescents training in tractor-driver and machinist specialties in Uzbekistan]. / Obosnovanie potrebnosti v énergii podrostkov, osvaivaiushchikh spetsialnost traktorista-mashinista v usloviiakh respubliki Uzbekistan.

Analysis has shown that the ration of pupils mastering tractor driver profession is insufficient. Excretion of vitamins with urine in 20-68% pupils is lower than the standard. Blood protein and protein fractions content indicated a decreased protein synthesizing function of the liver. Energy expenditures of pupils are 3040-3200 kcal/d.