Effects of different strength training methods on postexercise energetic expenditure
Rodrigo Lavinas Da Silva1, Michel Arias Brentano, Luiz Fernando Martins Kruel
1Exercise Research Laboratory, Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Journal of Strength and Conditioning Research
|October 27, 2009
Summary
The order of exercises in strength training does not significantly impact excess postexercise oxygen consumption (EPOC) or energy expenditure (EE). However, minimizing rest periods increases EPOC, similar to higher intensity training.
Area of Science:
- Exercise Physiology
- Metabolic Adaptations
- Strength Training Research
Background:
- Strength training is known to increase energy expenditure (EE) during and after exercise.
- The impact of exercise order on post-exercise EE, specifically excess postexercise oxygen consumption (EPOC), remains under-investigated.
Purpose of the Study:
- To determine if exercise order, using circuit training (CT) and pre-exhaustion (PE) methods, affects EPOC and EE.
- To compare the EPOC and EE between CT and PE strength training protocols.
Main Methods:
- Eight untrained women completed two strength training sessions (CT and PE) with 7 exercises at 50-55% of 1RM.
- Oxygen uptake was measured pre- and post-exercise to calculate EPOC.
- Postexercise EE was also quantified.
Main Results:
- No significant differences in EPOC (CT: 7.19 L vs. PE: 7.22 L) were observed between the two training orders.
- Postexercise EE also showed no significant difference (CT: 34.67 Kcal vs. PE: 34.77 Kcal).
- Absence of rest periods between sets/exercises increased EPOC levels.
Conclusions:
- Exercise order does not influence the magnitude of EPOC in strength training.
- Minimizing rest periods during strength training can enhance EPOC, achieving levels comparable to higher intensity training.
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