Journal of Kermanshah University of Medical Sciences
Peer-reviewed Medical Quarterly
e-ISSN 2588-2570
p-ISSN 2588-2562
Image Credit:J Kermanshah Univ Med Sci
Outline
Effects of endurance exercises on microarchitecture of proximal tibia in ovariectomized rats
Authors
1Dept. of Sport Physiology, School of Athletic Sciences, University of Mazandaran, Babolsar, Iran
2Dept. of Athletic Sciences, Payam Noor University, Iran
*Corresponding Author: Corresponding author: Valiollah Dabidiroshan, Dept. of Sport Physiology, School of Athletic Sciences, University of Mazandaran, Babolsar, Iran, Tel: +98 112 5244705 Email: Vdabidiroshan@yahoo.com
Published online:Mar 19, 2012
Article type:Research Article
Received:Apr 06, 2011
Accepted:Sep 13, 2011
How to Cite:Dabidiroshan V, Nobahar M. Effects of endurance exercises on microarchitecture of proximal tibia in ovariectomized rats. J Kermanshah Univ Med Sci. 2012;15(6):e78897. doi:
Abstract
Background: Appropriate endurance exercise can change bone mass density and strength of weight-bearing bones in both animals and humans, but its effects on the microstructure are not known. This study aimed to determine skeletal changes induced by the treadmill running endurance in ovariectomized adult mice.
Methods: twenty-seven adult female rats were divided into experimental and control groups.(Each group consisted of 9 rats) and 9 rats were killed to determine baseline values. Experimental group performed the progressive running exercise for 8 weeks, 12 to 20 m/min, 10 to 59 min, 5 times per week. Microarchitecture of dense and spongy bone tissues in the proximal tibia epiphysis were measured by using a semi-automated image analysis system. Data was analyzed using t-student tests (P<0.05).
Results: Running on treadmill causes a significant increase in the thickness and volume of spongy tissue and bone tissue was dense and spongy epiphysis upper tibia (P<0.05). Compared to control, treadmill running group showed significant difference in trabecular thickness and separation.
Conclusion: Ovariectomy may decrease the microarchitecture properties of cortical tissue and especially, trabecular tissue in weight-bearing bones. Increasing bone strength induced by endurance exercise is mediated by changes in bon microarchitecture.
Highlights
References
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Copyright
© 2012, Journal of Kermanshah University of Medical Sciences. This open-access article is available under the Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0) International License (https://creativecommons.org/licenses/by-nc/4.0/), which allows for the copying and redistribution of the material only for noncommercial purposes, provided that the original work is properly cited.
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