TY - JOUR
T1 - Alterations in resting metabolic rate as a consequence of 20 wk of endurance training
T2 - The HERITAGE Family Study
AU - Wilmore, Jack H.
AU - Stanforth, Philip R.
AU - Hudspeth, Louis A.
AU - Gagnon, Jacques
AU - Daw, E. Warwick
AU - Leon, Arthur S.
AU - Rao, D. C.
AU - Skinner, James S.
AU - Bouchard, Claude
PY - 1998
Y1 - 1998
N2 - This study determined the effects of endurance exercise training on the resting metabolic rate (RMR). It was hypothesized that the RMR would be increased posttraining, but that this increase would reflect the influence of the last exercise bout, not a chronic adaptation to exercise training. Seventy-four subjects (40 men and 37 women) aged 17-63 y participated in a 20-wk endurance training program. RMR and maximal oxygen uptake (̇O2max) were each measured on 2 separate days both pre- and posttraining; the posttraining RMR measurements were taken 24 and 72 h after the last exercise bout. There were small but significant changes posttraining in relative body fat (-1.0%), fat mass (-0.6 kg), and fat-free mass (0.7 kg) and a 17.9% increase in ̇O2max. The RMR remained unchanged posttraining, both 24 and 72 h after the last exercise bout, even when the data were adjusted to account for the potential confounding effects of age, sex, body composition, and ̇O2 max. In conclusion, 20 wk of endurance exercise training had no effect on the RMR even in the presence of small changes in body composition and a large increase in ̇O2max.
AB - This study determined the effects of endurance exercise training on the resting metabolic rate (RMR). It was hypothesized that the RMR would be increased posttraining, but that this increase would reflect the influence of the last exercise bout, not a chronic adaptation to exercise training. Seventy-four subjects (40 men and 37 women) aged 17-63 y participated in a 20-wk endurance training program. RMR and maximal oxygen uptake (̇O2max) were each measured on 2 separate days both pre- and posttraining; the posttraining RMR measurements were taken 24 and 72 h after the last exercise bout. There were small but significant changes posttraining in relative body fat (-1.0%), fat mass (-0.6 kg), and fat-free mass (0.7 kg) and a 17.9% increase in ̇O2max. The RMR remained unchanged posttraining, both 24 and 72 h after the last exercise bout, even when the data were adjusted to account for the potential confounding effects of age, sex, body composition, and ̇O2 max. In conclusion, 20 wk of endurance exercise training had no effect on the RMR even in the presence of small changes in body composition and a large increase in ̇O2max.
KW - Body composition
KW - Endurance exercise training
KW - Maximal oxygen uptake
KW - RMR
KW - Resting heart rate
KW - Resting metabolic rate
UR - http://www.scopus.com/inward/record.url?scp=0031781643&partnerID=8YFLogxK
U2 - 10.1093/ajcn/68.1.66
DO - 10.1093/ajcn/68.1.66
M3 - Article
C2 - 9665098
AN - SCOPUS:0031781643
SN - 0002-9165
VL - 68
SP - 66
EP - 71
JO - American Journal of Clinical Nutrition
JF - American Journal of Clinical Nutrition
IS - 1
ER -