خلاصة:
Introduction: Sanda is a modern unarmed combat sport that developed from traditional wushu techniques, and primarily makes use of punching, kicking, throwing, wrestling and defensive techniques. The effects of antioxidant supplements on immune responses to this sport are unclear; thus the aim of present study was to investigate the effects of vitamin C and E supplementation on immune responses to a competition bout of sanda.Material & Methods: Eighteen elite sanda athletes were assigned either an experimental (200 mg of vitamin C and400 IU of vitamin E; n=9) or a placebo group (Same dosage of juice powder; n=9) using a double-blind research design. Experimental group received the antioxidant supplements for a week before the competition. Thereafter, athletes in each weight categories competed together according with the rules of International Wushu Federation (IWUF) 2016. Blood samples were taken before and immediately after thecompetition.35Results: The data revealed that C-reactive protein (CRP) levels were lower significantly in the experimental group than the placebo group (1.1 ± 0.6 vs. 1.6 ± 0.9 pg/dl; P = 0.001). For white blood cells (WBC, 8777.7 ± 100.5 vs. 9466.6 ±972.1 n/mm3; P = 0.4), neutrophils (50.7 ± 6.4% vs. 49.0 ±7.8%; P = 0.4), monocytes (3.2 ± 1.6% vs. 3.6 ± 1.6%; P =0.7), lymphocytes (43.6 ± 7.3% vs. 44.6 ± 7.5%; P = 0.6) and eosinophils (1.4 ± 0.5% vs. 1.6 ± 0.7%; P = 0.6) no significant differences were observed between the experimental and the placebo group.Conclusions: According to the study results, vitamin C and E supplementation may have potential to enhance immune functions in sanda athletes.
ملخص الجهاز:
Effects of vitamin C and E supplementation on immune responses to a competition bout of sanda Hamid Sadeghi* Received: 3 September 2018 / Accepted: 9 November 2018 (*) MS in Exercise Physiology, Department of Exercise physiology, Marvdasht branch, Islamic Azad University, Marvdasht, Iran.
However, in another study, it has been concluded that 15-days vitamin C and E supplementation had no significant effect on the levels of CRP, IL-6, cortisol, lymphocyte, and lactate at rest, immediately and 1h after a session of aerobic training (11).
Thus the aim of present study was to investigate the effects of vitamin C and E supplementation on immune responses to a competition bout of sanda.
Changes of lymphocytes in the experimental and placebo group * Pre-post differences (P Changes of monocytes in response to vitamin C and E are presented in the Figure 4.
Changes of monocytes in the experimental and placebo group As shown in the Figure 5, results indicated that eosinophils had not significant changes in response to vitamin C and E supplementation.
The present study was conducted to determine the effects of vitamin C and E supplementation on immune responses to a competition bout of sanda.
In the present study vitamin C and E supplementation attenuates the exercise-induced increase of lymphocytes, neutrophils, monocytes and eosinophils, however there were no significant differences in WBC, lymphocytes, neutrophils, monocytes and eosinophils between groups.
5. Conclusion In summary, vitamin C and E supplementation for a week decreases plasma levels of CRP and it can attenuate the other inflammatory markers such as lymphocytes, neutrophils, monocytes and eosinophils however no significant differences were observed for these parameters between the groups.