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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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DIFFERENCE IN THE MAGNITUDE OF MUSCLE DAMAGE BETWEEN ELBOW FLEXORS AND KNEE EXTENSORS ECCENTRIC EXERCISES |
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Tolga Saka1, Bedrettin Akova2  ,
Zeynep Yazici3, Ufuk Sekir2, Hakan Gür2
and Yesim Ozarda4 |
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1Department of Sports Medicine, Medical Faculty of Erciyes University, Kayseri, 2Department of Sports Medicine, 3Department of Radiology and 4Department of Biochemistry, Medical Faculty of Uludag University, Bursa, Turkey. |
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© Journal of Sports Science and Medicine (2009) 8, 107 - 115 Search Google Scholar for Citing Articles |
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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. |
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