Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine ( 2009 ) 08 , 107 - 115

Research article
Difference in the magnitude of muscle damage between elbow flexors and knee extensors eccentric exercises
Tolga Saka1, Bedrettin Akova2, , Zeynep Yazici3, Ufuk Sekir2, Hakan Gür2, Yesim Ozarda4
Author Information
1 Department of Sports Medicine, Medical Faculty of Erciyes University, Kayseri, Turkey
2 Department of Sports Medicine, Medical Faculty of Uludag University, Bursa, Turkey
3 Department of Radiology, Medical Faculty of Uludag University, Bursa, Turkey
4 Department of Biochemistry, Medical Faculty of Uludag University, Bursa, Turkey

Bedrettin Akova
✉ Department of Sports Medicine, Medical Faculty of Uludag, University, 16059 Bursa, TURKEY
Email: bakova@uludag.edu.tr
Publish Date
Received: 17-06-2008
Accepted: 28-01-2009
Published (online): 01-03-2009
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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 1st , 2nd, 3rd , and 7th 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 2nd , 3rd , and 7th days (p < 0.01) and increases in Mb on the 1st , 2nd , 3rd , and 7th 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 words: Maximal eccentric exercise, muscle damage, creatine kinase, muscle volume.


           Key Points
  • 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.
  • This may be because of the higher total eccentric work per muscle unit in elbow flexors.
 
 
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