Reference : Muscle fatigue experienced during maximal eccentric exercise is predictive of the plasma...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/107025
Muscle fatigue experienced during maximal eccentric exercise is predictive of the plasma creatine kinase (CK) response
English
Hody, Stéphanie mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine >]
Rogister, Bernard mailto [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine >]
Leprince, Pierre mailto [Université de Liège - ULg > > GIGA - Neurosciences >]
WANG, François-Charles mailto [Centre Hospitalier Universitaire de Liège - CHU > > Médecine de l'appareil locomoteur >]
CROISIER, Jean-Louis mailto [Centre Hospitalier Universitaire de Liège - CHU > > Médecine de l'appareil locomoteur >]
Aug-2013
Scandinavian Journal of Medicine & Science in Sports
Munksgaard International Publishers
23
4
501-7
Yes (verified by ORBi)
International
0905-7188
1600-0838
Copenhagen
Denmark
[en] creatine kinase activity ; muscle fatigue ; muscular work ; muscle damage ; eccentric contraction
[en] Unaccustomed eccentric exercise may cause skeletal muscle damage with an increase in plasma creatine kinase (CK) activity. Although the wide variability among individuals in CK response to standardized lengthening contractions
has been well described, the reasons underlying this phenomenon have not yet been understood. Therefore, this study investigated a possible correlation of the
changes in muscle damage indirect markers after an eccentric exercise with the decline in muscle performance during the exercise. Twenty-seven healthy untrained male subjects performed three sets of 30 maximal isokinetic
eccentric contractions of the knee extensors. The muscular work was recorded using an isokinetic dynamometer to assess muscle fatigue by means of various fatigue indices. Plasma CK activity, muscle soreness, and stiffness were
measured before (pre) and one day after (post) exercise. The eccentric exercise bout induced significant changes of the three muscle damage indirect markers. Large intersubject variability was observed for all criteria measured. More interestingly, the log (CKpost/CKpre) and muscle stiffness appeared to be closely correlated with the relative work decrease (r = 0.84, r2 = 0.70 and r = 0.75, r2 = 0.56, respectively). This is the first study to propose that the muscle fatigue profile during maximal eccentric protocol could predict the magnitude of the symptoms associated with muscle damage in humans.
Giga-Neurosciences ; Département de Médecine Physique ; Département des Sciences de la Motricité
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/107025
10.1111/j.1600-0838.2011.01413.x

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