Difference in the magnitude of muscle damage between elbow flexors and knee extensors eccentric exercises.
- 1 March 2009
- journal article
- Vol. 8 (1), 107-15
Abstract
The aim of this study was to investigate the difference in the magnitude of muscle damage between maximal eccentric exercises of the elbow flexors (EF) and knee extensors (KE). Twelve sedentary male volunteers participated in the study. Range of motion (ROM), isometric peak torque (IPT), delayed onset of muscle soreness (DOMS), creatine kinase activity (CK), and myoglobin concentration (Mb) were evaluated before, immediately after, and on the 1(st) , 2(nd), 3(rd) , and 7(th) days following exercise. Total work (TW) during exercises was recorded and corrected by muscle volume (TWc). TWc was greater (p < 0.01) for EF [24 (2) joule·cm-3] than for KE [7 (0.4) joule·cm(-3)]. Increases in CK on the 2(nd) , 3(rd) , and 7(th) days (p < 0.01) and increases in Mb on the 1(st) , 2(nd) , 3(rd) , and 7(th) days were significantly (p<0.01) larger for EF than for KE. The decline in IPT was greater (p < 0.05- 0.01) for EF at all test occasions compared with KE. The results of this study demonstrate that the magnitude of muscle damage is greater and the recovery is slower following maximal eccentric exercise of the EF than of the KE for sedentary males. Key pointsThe magnitude of muscle damage is greater and the recovery is slower following maximal eccentric exercise of the EF than of the KE for sedentary males.This may be because of the higher total eccentric work per muscle unit in elbow flexors.Keywords
This publication has 38 references indexed in Scilit:
- Equal Volumes of High and Low Intensity of Eccentric Exercise in Relation to Muscle Damage and PerformanceJournal of Strength & Conditioning Research, 2005
- Muscle fiber number in the biceps brachii muscle of young and old menMuscle & Nerve, 2003
- Exercise-Induced Muscle Damage in HumansAmerican Journal of Physical Medicine & Rehabilitation, 2002
- Eccentric exercise‐induced injuries to contractile and cytoskeletal muscle fibre componentsActa Physiologica Scandinavica, 2001
- The Effect of Training Status on the Serum Creatine Kinase Response, Soreness and Muscle Function Following Resistance ExerciseInternational Journal of Sports Medicine, 1997
- Changes in human skeletal muscle contractile function following stimulated eccentric exerciseEuropean Journal of Applied Physiology, 1996
- Muscle soreness, swelling, stiffness and strength loss after intense eccentric exercise.British Journal of Sports Medicine, 1992
- Relationship between Post-Exercise Plasma CK Elevation and Muscle Mass Involved in the ExerciseInternational Journal of Sports Medicine, 1992
- Time course of muscle adaptation after high force eccentric exerciseEuropean Journal of Applied Physiology, 1991
- Muscle Fiber Composition and Respiratory Capacity in TriathletesInternational Journal of Sports Medicine, 1987