Resistance and aerobic exercise have similar effects on 24-h nutrient oxidation

Med Sci Sports Exerc. 2002 Nov;34(11):1793-800. doi: 10.1097/00005768-200211000-00016.

Abstract

Background: Whether resistance exercise is as effective as aerobic exercise for body-weight management is debated.

Purpose: To compare 24-h energy expenditure (EE) and macronutrient oxidation elicited by comparable bouts of stationary cycling (BK) and weightlifting (WTS).

Methods: 24-h EE and macronutrient oxidation were measured in 10 nonobese male subjects on three occasions using whole-room indirect calorimetry. BK and WTS days were compared with a nonexercise control day (Con).

Results: During BK, subjects exercised for 49 +/- 7 min (mean +/- SEM) at 70% of OV(2max) and expended 546 +/- 16 kcal. During WTS, subjects performed a 70-min circuit consisting of four sets of 10 different exercises at 70% of exercise-specific 1-repetition maximum and expended 448 +/- 21 kcal (P < 0.001 vs BK). 24-h EE on BK and WTS days (2,787 +/- 76 kcal x d(-1), 2,730 +/- 106 kcal x d(-1), respectively, P > 0.05) was elevated compared with Con (2,260 +/- 96 kcal x d(-1), P < 0.001), but 24-h respiratory exchange ratio (RER) was not different. 24-h carbohydrate oxidation was significantly elevated on the exercise days (BK = 370 +/- 18 g x d(-1), WTS = 349 +/- 23 g x d(-1), P > 0.05) compared with Con (249 +/- 29 g x d(-1), P = 0.04). 24-h fat and protein oxidation were the same on BK, WTS, and Con days. EE and macronutrient oxidation in the periods after exercise also did not differ across conditions.

Conclusion: In men, resistance exercise has a similar effect on 24-h EE and macronutrient oxidation as a comparable bout of aerobic exercise. Neither exercise produced an increase in 24-h fat oxidation above that observed on a nonexercise control day.

Publication types

  • Clinical Trial
  • Comparative Study
  • Controlled Clinical Trial
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Anaerobic Threshold / physiology
  • Body Composition
  • Body Mass Index
  • Calorimetry, Indirect
  • Carbohydrate Metabolism
  • Energy Metabolism / physiology*
  • Exercise / physiology*
  • Fats / metabolism
  • Humans
  • Male
  • Oxidation-Reduction
  • Physical Endurance / physiology
  • Physical Exertion / physiology*
  • Prospective Studies
  • Proteins / metabolism
  • Reference Values
  • Sampling Studies
  • Sensitivity and Specificity
  • Weight Lifting / physiology*

Substances

  • Fats
  • Proteins