Effect of preceding resistance exercise on metabolism during subsequent aerobic session

Abstract

The present study was undertaken to evaluate the acute effect of prior resistance training of varying intensities on energy expenditure and substrate utilization during subsequent aerobic exercise. Eleven males and 21 females completed three experimental trials consisting of (1) aerobic exercise only (C), (2) aerobic exercise preceded by a high-intensity resistance training (HI), and (3) aerobic exercise preceded by a low-intensity resistance training (LO). Resistance training produced an equal volume between HI and LO and consisted of six exercises with each performed for three sets of eight repetitions at 90% of 8-RM in HI and three sets of 12 repetitions at 60% of 8-RM in LO. Aerobic exercise was performed on a cycle ergometer at 50% VO(2)peak for 20 min in all trials. Oxygen uptake (VO2), and carbohydrate and fat oxidation were determined throughout each aerobic exercise session. Fat oxidation rate was higher (P < 0.05) in HI than either LO or C in both males and females. VO2 was also higher (P < 0.05) in HI than either LO or C in females. In males, although between-trial differences in VO2 did not reach statistical significance, they were consistent with the trend seen in females. No differences in carbohydrate oxidation rates were observed across the three trials in either gender group. It appears that in training that combines both aerobic and resistance exercises, performing a comparatively higher intensity resistance exercise first would augment fat utilization and energy expenditure during subsequent aerobic exercise.

Reproducibility of Fatmax and Fat Oxidation Rates during Exercise in Recreationally Trained Males

“…This level of standardization was adopted because it appears to be the most commonly employed approach in our research field [3], [8], [28]–[32] and because more rigorous standardization is difficult to achieve both in out-clinic and research settings. Despite the standardization adopted, in some individuals a high intra-individual variability in Fat max and related variables was found, suggesting that a longer period of standardization (≥2 days prior to testing) might be needed to improve the reproducibility of those measures.…”

Energy Expenditure Combining Strength and Aerobic Training

“…Also, in a study performed by Kang et al (2009), where were observed a significantly higher absolute VO 2 , in female subjects, between cycling in a cycle ergometer after ST exercise (3 sets of 8 reps of 6 exercises performed at 90% of the 8 RM and 3 sets of 12 reps of the 6 exercises performed at 60% of the 8 RM). Contrarily to Drummond et al (2005) and Kang et al (2009), on your unpublished data we not found significant differences during the AT exercise (cycling in a cycle ergometer), when this was followed or preceded of the ST exercises. A possible explanation of the differences between your data and Drummond et al (2005) resides on the device used for the AT exercise (cycle ergometer vs. treadmill, respectively).…”

“…It has been shown that the VO 2 kinetics is faster and the O 2 deficit is smaller for a given exercise when a previous bout of exercise is performed (Gerbino et al, 1996; Koppo and Bouckaert, 2000; Burnley et al, 2001; Scheuermann et al, 2001) involving the same muscle groups (Yoshida et al, 1995; Fukuba et al, 2002). The differences between Kang et al, (2009) and your unpublished data on the VO 2 during AT exercise, may have been with the variations on the intensities during the AT exercise , in your data, and in Kang et al, (2009), the same exercise was performed with same intensity in all period.…”

“…The acute effects of combining the two types of exercises previously mentioned in the same training session on oxygen consumption (VO 2 ) during and/or after the training session, are scarcely reported in the literature (Drummond et al, 2005; Lira et al, 2007; Monteiro et al, 2008; Kang et al, 2009). …”

Linear and undulating periodized strength plus aerobic training promote similar benefits and lead to improvement of insulin resistance on obese adolescents

“…Other studies have shown that there were no differences between the aerobic and strength training and the intensity of exercise may have influence on the maintenance of the RMR, (Byrne & Wilmore, 2001;Lee, Sedlock, Flynn, & Kamimori, 2009) and on the type of the substrate recruited (Kang et al, 2009). …”