King Grub
2010-07-14, 10:00
To explore whether nitrogen retention can differ on an isonitrogenous diet by changing when protein is consumed, we performed a short-term study in older individuals (64.5 +/- 2.0 years) performing daily exercise while in energy balance. Participants consumed an isonitrogenous-isocaloric diet with the timing of a protein or carbohydrate beverage after exercise (protein after exercise [PRO], carbohydrate after exercise [CHO]) versus earlier in the day. Three-day mean energy balance (PRO: 202 +/- 36 kcal and CHO: 191 +/- 44 kcal; p = .68) did not differ between trials, but 3-day mean nitrogen balance was significantly more positive in the PRO (1.2 +/- 0.32 g N) trial than the CHO trial (0.8 +/- 0.45 g N; p < .05). Older individuals were better able to maintain nitrogen balance by simply changing when a portion of an identical amount of daily protein was consumed.
J Gerontol A Biol Sci Med Sci. 2010 Jul 9. Nitrogen Balance in Older Individuals in Energy Balance Depends on Timing of Protein Intake.
J Gerontol A Biol Sci Med Sci. 2010 Jul 9. Nitrogen Balance in Older Individuals in Energy Balance Depends on Timing of Protein Intake.