Physiological response of human adults at different levels of energy intake.
1989
Agte V. | Chiplonkar S. | Baralay S. | Sukhatme P.V.
Study of the physiological response of adult individuals to a modest but sustained change in food intake is essential to get an insight about the range of normality within which the individual can remain healthy. A systematic investigation was, therefore, undertaken in four male, healthy, adult volunteers at three levels of energy intake. The levels were determined by observing the average habitual intake and percent variation in each subject. Effect of change in intake was assessed by measuring metabolic rate at basal conditions (BMR), sitting (SMR), and during bicycle ergometer exercise (B.ERG); and body weight (B.W.). As the intake decreased by 10%, mean BMR, mean SMR, mean B.ERG., showed a significant (P less than 0.05) decrease. And when intake increased by 20%, only mean BMR increased significantly (P less than 0.05). Change in B.W. were much less than expected. These results suggest that the subjects have adjusted their energy expenditure in order to cope up with the sustained change in energy intake.
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