The Effects of Endurance Training and Vitamin D Supplementation on the Bone Resorption Markers in the Rats Exposed to Oxidative Damage Induced by Hydrogen Peroxide (H2O2)

Introduction:studies have shown that the increase of active oxygen species is associated with damage to bone cells and the role of exercise and vitamin D on bone health has been proven;the aim of this study was to investigate the interactive effects of aerobic exercise with vitamin D supplements on bone resorption markers in rats exposed to oxidative damage induced by H2O2. Methods: Sixty male adult male Wistar rats were randomly divided into 10 groups of six rats including:1)1 mmol/kg H2O2, 2)2 mmol/kg H2O2, 3)1mmol/kg H2O2+vitamin D,4) 1mmol/kg H2O2+aerobic training,5)1mmol/kg H2O2+Vitamin D+aerobic training,6)2 mmol/kg H2O2+Vitamin D,7)2mmol/kg H2O2+aerobic training,8)2mmol/kg H2O2+Vitamin D+aerobic training;9)Sham (D-methyl- Sulfoxide+normal saline); and(10)control and for 8 weeks were under the protocol of intervention.The levels of TRACP/5B and NTX were measured by ELISA method. Two-way and one-way ANOVA with Tukey’s post hoc test was used to analysis of data (p≤0.05). Results: 1and 2 mmol/kg H2O2 had no significant effect on NTX and TRACP/5B levels(p≥0/05). Eight weeks of aerobic training increased of NTX levels in rats exposed to 2mmol/kg H2O2 (p≤0/05).Eight weeks of Vitamine D had no significant effect on NTX and TRACP/5B levels (p≥0/05).Also eight weeks of aerobic training along with Vitamin D had no interactive effects on increase of NTX and TRACP/5B levels in rats exposed to 1and 2mmol/kg H2O2(p≥0/05). Conclusion: It seems that doses of 1 and 2mg/kg H2O2 have not significant effect on changes in bone resorption markers,but aerobic exercise had a significant effect on NTX increase in rats exposed to oxidative damage induced by 2mg/kg H2O2.

Keywords:

Training , Vitamin D , Bone , H2O2