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European Journal of Applied Physiology
Published in: European Journal of Applied Physiology 8/2014

01-08-2014 | Original Article

Creatine supplementation prevents acute strength loss induced by concurrent exercise

Authors: Vítor de Salles Painelli, Victor Tavares Alves, Carlos Ugrinowitsch, Fabiana Braga Benatti, Guilherme Giannini Artioli, Antonio Herbert Lancha Jr, Bruno Gualano, Hamilton Roschel

Published in: European Journal of Applied Physiology | Issue 8/2014

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Abstract

Purpose

To investigate the effect of creatine (CR) supplementation on the acute interference induced by aerobic exercise on subsequent maximum dynamic strength (1RM) and strength endurance (SE, total number of repetitions) performance.

Methods

Thirty-two recreationally strength-trained men were submitted to a graded exercise test to determine maximal oxygen consumption (VO2max: 41.56 ± 5.24 ml kg−1 min−1), anaerobic threshold velocity (ATv: 8.3 ± 1.18 km h−1), and baseline performance (control) on the 1RM and SE (4 × 80 % 1RM to failure) tests. After the control tests, participants were randomly assigned to either a CR (20 g day−1 for 7 days followed by 5 g day−1 throughout the study) or a placebo (PL-dextrose) group, and then completed 4 experimental sessions, consisting of a 5-km run on a treadmill either continuously (90 % ATv) or intermittently (1:1 min at vVO2max) followed by either a leg- or bench-press SE/1RM test.

Results

CR was able to maintain the leg-press SE performance after the intermittent aerobic exercise when compared with C (p > 0.05). On the other hand, the PL group showed a significant decrease in leg-press SE (p ≤ 0.05). CR supplementation significantly increased bench-press SE after both aerobic exercise modes, while the bench-press SE was not affected by either mode of aerobic exercise in the PL group. Although small increases in 1RM were observed after either continuous (bench press and leg press) or intermittent (bench press) aerobic exercise in the CR group, they were within the range of variability of the measurement. The PL group only maintained their 1RM.

Conclusions

In conclusion, the acute interference effect on strength performance observed in concurrent exercise may be counteracted by CR supplementation.
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Metadata
Title
Creatine supplementation prevents acute strength loss induced by concurrent exercise
Authors
Vítor de Salles Painelli
Victor Tavares Alves
Carlos Ugrinowitsch
Fabiana Braga Benatti
Guilherme Giannini Artioli
Antonio Herbert Lancha Jr
Bruno Gualano
Hamilton Roschel
Publication date
01-08-2014
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Applied Physiology / Issue 8/2014
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-014-2903-0

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