Article (Scientific journals)
The susceptibility of the knee extensors to eccentric exercise-induced muscle damage is not affected by leg dominance but by exercise order .
Hody, Stéphanie; Rogister, Bernard; Leprince, Pierre et al.
2013In Clinical Physiology and Functional Imaging, 33 (5), p. 373-380
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Keywords :
Lengthening contraction; Exercise-induced muscle damage; Dominance; Delayed-Onset Muscle Soreness (DOMS); Contralateral RBE (Repeated-bout effect)
Abstract :
[en] The aims of this study were first to compare the response of dominant and non-dominant legs to eccentric exercise and second, to examine whether there is an effect of exercise order on the magnitude of symptoms associated with intense eccentric protocols. Eighteen young men performed 3 sets of 30 maximal eccentric isokinetic (60°.sec-1) contractions of the knee extensors (range of motion, ROM: 0°-100°, 0=full extension) using either dominant or nondominant leg. They repeated a similar eccentric bout using the contralateral leg six weeks later. The sequence of leg’s use was allocated to create equally balanced groups. Four indirect markers of muscle damage including subjective pain intensity, maximal isometric strength, muscle stiffness and plasma CK activity were measured before and 24 hours after exercise. All markers changed significantly following the eccentric bout performed either by dominant or non-dominant legs but no significant difference was observed between legs. Interestingly, the comparison between the first and second eccentric bouts revealed that muscle soreness (-42%, p<0.001), CK activity (-62%, p<0.05) and strength loss (-54%, p<0.01) were significantly lower after the second bout. This study suggests that leg dominance does not influence the magnitude of exercise-induced muscle damage and supports for the first time the existence of a contralateral protection against exercise-induced muscle damage in the lower limbs.
Disciplines :
Orthopedics, rehabilitation & sports medicine
Author, co-author :
Hody, Stéphanie ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Rogister, Bernard  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Leprince, Pierre ;  Université de Liège - ULiège > GIGA - Neurosciences
Laglaine, Thibaud
Croisier, Jean-Louis ;  Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Language :
English
Title :
The susceptibility of the knee extensors to eccentric exercise-induced muscle damage is not affected by leg dominance but by exercise order .
Publication date :
September 2013
Journal title :
Clinical Physiology and Functional Imaging
ISSN :
1475-0961
eISSN :
1475-097X
Publisher :
Wiley
Volume :
33
Issue :
5
Pages :
373-380
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ULiège - Université de Liège [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Fonds Léon Fredericq [BE]
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since 14 March 2013

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