Document Type : Original Article (s)
Authors
1
Associate Professor, Department of Biology, School of Basic Sciences, University of Mazandaran, Babolsar, Iran
2
PhD Student, Department of Sport Medicine, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
3
Associate Professor, Department of Sport Medicine, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
4
Associate Professor, Department of Sport Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran
5
PhD Student, Department of Sport Traumatology, School of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran
Abstract
Background: Osteoarthritis is the most prevalent musculoskeletal disorder leading to chronic pain and severe disability and its prevalence is predicted to raise significantly in the future as the population ages.Methods: Thirty male Wistar rats (weight of 173 ± 1 g, age of 8 weeks) were randomly divided into 5 equal experimental groups: 1. Intact control, 2. Osteoarthritis, 3. Quercetin 4. Swimming, and 5. Quercetin + Swimming. Intra-articular injection of 50 µl of monosodium iodoacetate (MIA) was applied on right knee of rats; similarly, saline was injected in left knees. The used training program was swimming in moderate intensity for 28 days. After the completion of the protocol, rats were killed and both knees of the animals were assessed histopathologically. One-way analysis of variances (ANOVA) and post-hoc Tukey tests were used for statistical analysis, at the significant level of P < 0.05.Findings: Results indicated a significant difference between quercetin, swimming and quervetin + swimming groups with the osteoarthritis group (P = 0.001).Conclusion: Regarding results of the study, it can be concluded that swimming exercise at moderate intensity and quercetin supplementation, either alone or in combination, have a positive effect on improvement of osteoarthritis symptoms of rat’s knee. But, it seems that separate effect of quercetin supplementation and its combination with swimming exercise does not excel the effect of swimming exercise alone.
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