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Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e318238e852
Original Research

Does Aerobic and Strength Exercise Sequence in the Same Session Affect the Oxygen Uptake During and Postexercise?

Alves, JoséVilacxa1; Saavedra, Francisco1; Simão, Roberto1,2; Novaes, Jefferson1,2; Rhea, Matthew R.3; Green, Danielle4; Reis, Victor Machado1

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Abstract

Abstract: Vilaça Alves, J, Saavedra, F, Simão, R, Novaes, J, Rhea, MR, Green, D, and Machado Reis, V. Does aerobic and strength exercise sequence in the same session affect the oxygen uptake during and postexercise? J Strength Cond Res 26(7): 1872–1878, 2012—Concurrent training is a strategy employed in both general fitness and sports conditioning. The purpose of this study was to compare the responses of V[Combining Dot Above]O2 in different combinations of strength exercise with aerobic interval exercise. Eight men (23.6 ± 4.2 years, 178 ± 6.3 cm, 77 ± 7.9 kg, 7.67 ± 1.95% body fat) completed 3 combinations of strength training (ST) and aerobic training (AT) in a randomized order with a 7-day recovery period: AT before ST exercises, AT between 2 blocks of ST exercises, and AT after ST exercises. The ST comprised 4 exercises performed in 3 sets of 10 reps and 2 exercises, abdominal crunch and lumbar extension, performed in 3 sets of 30 and 20 reps, respectively. The AT consisted of a 20-minute interval cycling. There were no significant differences in the values of absolute or relative V[Combining Dot Above]O2, in the heart rate (HR) and in the respiratory exchange ratio (RER) when the 3 sessions (during + postexercise measurements) were compared (values are mean ± SD). Analyzing only ST in each session, differences were detected in the RER values (F = 4.714; p < 0.05; η2 = 0.308) between AT before ST and AT in the middle of ST (1.01 ± 0.97 vs. 1.11 ± 0.07, respectively). In all sequences, there was a significant increase (p < 0.05) in the values of relative and absolute V[Combining Dot Above]O2 and HR, and a significant decrease in RER values (p < 0.05) from the first to the second part of the ST session. The values of absolute or relative V[Combining Dot Above]O2, HR, and RER did not vary significantly among the 3 sessions as compared with the AT after ST. These data support the hypothesis that ST and AT, when performed in sequence in the same session, do not seem to affect the overall oxygen consumption during the exercise session. Therefore, training sessions may incorporate both modalities without apparent impact on aerobic exercise.

© 2012 National Strength and Conditioning Association

 

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