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European Journal of Applied Physiology

, Volume 114, Issue 8, pp 1749–1755 | Cite as

Creatine supplementation prevents acute strength loss induced by concurrent exercise

  • Vítor de Salles Painelli
  • Victor Tavares Alves
  • Carlos Ugrinowitsch
  • Fabiana Braga Benatti
  • Guilherme Giannini Artioli
  • Antonio Herbert LanchaJr
  • Bruno Gualano
  • Hamilton Roschel
Original Article

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.

Keywords

Creatine supplementation Interference Resistance training Fatigue 

Abbreviations

1RM

Maximum dynamic strength

ATv

Anaerobic threshold velocity

Ca++

Calcium

CE

Continuous aerobic exercise and strength endurance assessment condition

CM

Continuous aerobic exercise and maximum strength assessment condition

CR

Creatine

HPLC

High-performance liquid chromatography

HRmax

Maximum heart rate

IE

Intermittent aerobic exercise and strength endurance assessment condition

IM

Continuous aerobic exercise and maximum strength assessment condition

PL

Placebo

SE

Strength endurance

VE/VCO2

Ventilatory equivalent for carbon dioxide

VCO2

Carbon dioxide output

VO2

Oxygen consumption

VO2max

Maximal oxygen consumption

vVO2max

Maximal oxygen consumption velocity

Notes

Acknowledgments

The authors are grateful to all subjects who participated in the study. Vitor de Salles Painelli is supported by FAPESP (Grant 2013/04806-0). CU was supported by CNPq (Grant 304205/2011-7). The authors are grateful to Probiótica for the donation of Creapure®.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Vítor de Salles Painelli
    • 1
  • Victor Tavares Alves
    • 1
  • Carlos Ugrinowitsch
    • 1
  • Fabiana Braga Benatti
    • 1
  • Guilherme Giannini Artioli
    • 1
  • Antonio Herbert LanchaJr
    • 1
  • Bruno Gualano
    • 1
  • Hamilton Roschel
    • 1
  1. 1.School of Physical Education and SportUniversity of Sao PauloSão PauloBrazil

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