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TI: Effect of acute resistance exercise on postexercise oxygen consumption
and resting metabolic rate in young women
AU: Osterberg,-K.-L; Melby,-C.-L
JN: International-journal-of-sport-nutrition-and-exercise-metabolism -(Champaign, Ill.) 10(1), Mar 2000, 71-81 Refs:22, Total Pages: 11.
CN: American College of Sports Medicine. Meeting (1999: Seattle, Wash.)
PY: 2000
AB: This study determined the effect of an intense bout of resistive exercise
on postexercise oxygen consumption, resting metabolic rate, and resting fat
oxidation in young women (N = 7, ages 22-35). On the morning of Day 1, resting
metabolic rate (RMR) was measured by indirect calorimetry. At 13:00 hr,
preexercise resting oxygen consumption was measured followed by 100 min of
resistive exercise. Postexercise oxygen consumption was then measured for a
3-hr recovery period. On the following morning (Day 2), RMR was once again
measured in a fasted state at 07:00. Postexercise oxygen consumption remained
elevated during the entire 3-hr postexercise recovery period compared to the
pre-exercise baseline. Resting metabolic rate was increased by 4.2 % (p < .05)
from Day 1 (morning prior to exercise: 1,419 +/- 58 kcal / 24 hr) compared to
Day 2 (16 hr following exercise: 1,479 +/- 65 kcal / 24 hr). Resting fat
oxidation as determined by the respiratory exchange ratio was also
significantly elevated on Day 2 compared to Day 1. These results indicate that
among young women, acute strenuous resistance exercise of the nature used in
this study is capable of producing modest but prolonged elevations of
postexercise metabolic rate and possibly fat oxidation.
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