Influence of vitamin A consumption on resting metabolic rate and fasting respiratory quotient in severely obese subjects.

Objective: To study whether or not the amount of vitamin A consumed affects the resting metabolic rate (RMR) and fat oxidation at rest in severely obese subjects.

Materials And Methods: In 239 obese subjects, RMR and fasting respiratory quotient (RQ) were determined by indirect calorimetry. Vitamin A consumption was calculated by the Czech PC program 'Nutrition'.