Revistes Catalanes amb Accés Obert (RACO)

One repetition maximum test increases serum indices of muscle

Hamid Arazi, Abbas Asadi


Introduction: The purpose of this study was to examine the effect of one repetition maximum
test on muscle damage and soreness in trained and untrained males.
Methods: Ten trained (T) and 10 untrained (UT) males participated in this study. Subjects performed
one repetition maximum (1RM) test for the back squat exercise and creatine kinase
(CK) activity, C-reactive protein (CRP) concentration, and muscle soreness (quadriceps and
hamstring) were assessed at pre, 24, 48 and 72 h post 1RM test.
Results: Significant increases in CK activity and muscle soreness were observed at 24, 48 and
72 h post 1RM test, and there were also significant differences between T and UT (p < 0.05). In
the CRP concentration, both groups indicated significant increases above resting at 24, 48 and
72 h post 1RM test and 72 h compared to 24 h (p < 0.05). There were no significant differences
between T and UT in the CRP concentration (p > 0.05).
Conclusion: In conclusion, the 1RM back squat test (high intensity and low volume) increases CK
activity, CRP concentration in the plasma and muscle soreness in the T and UT. It can be observed
that 1RM test can induce muscle damage, which would be a negative factor for athletes and
individuals, since the muscle injury is associated with decreased performance.
© 2012 Consell Català de l’Esport. Generalitat de Catalunya. Published by Elsevier España, S.L.
All rights reserved.

Text complet: PDF