Effects of exercise intensity on food consumption in the male rat
1979
Katch, Victor L. | Martin, Robert | Martin, John
The effects of two different levels of exercise of equal caloric cost on food consumption and body weight changes was investigated in 24 male rats. Open circuit spirometry was used to collect respiratory gas exchange during running on the treadmill and these data were used to equate two intensities of exercise to the same caloric expenditure. Food consumption was measured 1 hour, and every 4 hours thereafter for 24 hours during 2 alternate weeks of exercise and rest. Results showed that high intensity exercise resulted in depressed food consumption and depressed body weight gain compared with low intensity exercise of equal caloric expenditure. Both exercise groups had depressed food consumption and rate of body weight change compared to nonexercise animals. Differences in the food consumption data for the two exercise groups suggest that some factors related to the degree of effort rather than total energy expenditure may be the key factors influencing food consumption following exercise.
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