Volume 35, Issue 4 pp. 267-274
Original Article

Protection against muscle damage induced by electrical stimulation: efficiency of a preconditioning programme

Marc Vanderthommen

Corresponding Author

Marc Vanderthommen

Department of Sport and Rehabilitation, University of Liège, Liège, Belgium

Correspondence

Marc Vanderthommen, Department of Sport and Rehabilitation, University of Liège, ISEPK B21 Sart-Tilman, B4000 Liège, Belgium

E-mail: [email protected]

Search for more papers by this author
Remy Chamayou

Remy Chamayou

Department of Sport and Rehabilitation, University of Liège, Liège, Belgium

Search for more papers by this author
Christophe Demoulin

Christophe Demoulin

Department of Sport and Rehabilitation, University of Liège, Liège, Belgium

Search for more papers by this author
Jean-Michel Crielaard

Jean-Michel Crielaard

Department of Sport and Rehabilitation, University of Liège, Liège, Belgium

Search for more papers by this author
Jean-Louis Croisier

Jean-Louis Croisier

Department of Sport and Rehabilitation, University of Liège, Liège, Belgium

Search for more papers by this author
First published: 29 April 2014
Citations: 9

Summary

Purpose

The aim of this study was to explore the efficiency of a preconditioning programme composed of neuromuscular electrical stimulation (NMES) in the protection against muscle damage induced by a subsequent bout of NMES.

Methods

Sixteen male volunteers were split up into a control group (CG; n = 8) and a preconditioned group (PCG; n = 8). Both groups attended two NMES bouts (test 1 and test 2) spaced 5 weeks apart. Each one consisted in 100 quadriceps contractions and 100 hamstrings contractions. PCG attended five additional progressive NMES sessions between test 1 and test 2. The outcome measures were the changes in muscle soreness [0–10 pain score on visual analogue pain scale (VAS)], muscle flexibility and serum creatine kinase (CK) activity; they were assessed before (pre-T1) and after (post-T1) test 1 and before (pre-T2) and after (post-T2) test 2.

Results

Damage markers increased similarly in both groups after test 1 (at post-T1, VAS scores = 4·18 ± 2 and 4·43 ± 1·56 cm in CG and PCG, respectively; CK activity = 2307 ± 3774 and 1671 ± 1790 IU l−1 in CG and PCG, respectively). Compared with test 1, these damage markers were reduced after test 2 in CG (at post-T2, VAS score = 2·68 ± 1·27 cm and CK activity = 218 ± 72 IU l−1). Muscle soreness was further reduced after test 2 in PCG (VAS score = 0·37 ± 0·74 cm).

Conclusions

A protective effect against muscle damage can be obtained after only one NMES bout, and an additional protective effect can be induced by a preconditioning programme.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.