Meta-Analysis of the Effectiveness of Saffron Supplementation on Enzymatic Antioxidant Defense Biomarkers in Exercise

Document Type : Research Paper

Authors

1 Assistant Professor of Exercise Physiology, Sport Sciences Research Institute

2 Assistant Professor of Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran

3 M.Sc. in Exercise Physiology, Sport Sciences Research Institute

Abstract

The aim of present study was to perform a meta-analysis on the conflict results of several surveys about the effectiveness of saffron supplementation on enzymatic antioxidant defense biomarkers in exercise. This meta-analysis has collected results from four qualified studies. All researches were control case study (n=70) and had evaluated the effectiveness of saffron supplementation before aerobic exercise on Catalase and Superoxide Dismutase (SOD) enzymes amounts. Regard to non-significant P-value (P=0.155) in I2 index, fixed effects model has been used. The statistical analyze of research was done by Comprehensive Meta-Analysis Version 2, and the effect size was measured by Standardized Mean Difference (SMD). Generally, 10 effect sizes were observed in researches which five effect sizes were positive and five effect sizes were negative. According to the results, SMD of antioxidant enzymes in saffaron group (SMD=0.671) was significant toward control group (Confidence interval= 0.337-1.005, P=0.01), and SMD of antioxidant enzymes in saffaron+exercise group  (SMD=0.77) was also significant toward control group (Confidence interval= 0.436-1.105, P=0.01). In the case of estimating antioxidant defense via Catalase, SMD in saffaron group (SMD=0.604) was significant toward control group (Confidence interval= 0.048-1.161, P=0.05), whereas SMD in saffaron+exercise group (SMD=0.243) was not significant toward control group (Confidence interval= -0.302-0.789). In the case of estimating antioxidant defense via SOD, the SMD in saffaron group (SMD=1.464) was significant toward control group (Confidence interval= -0.846-2.082, P=0.01), and SMD in saffaron+exercise group  (SMD=1.306) was also significant toward control group (Confidence interval= 0.705-1.908, p=0.01). Based on collecting the studies results, it can be concluded that saffron supplementation may enhance enzymatic antioxidant defense and lower exercise induced-oxidative stress. However, the most effectiveness of saffron has observed on SOD enzyme amount, whereas saffron effectiveness on exercise induced-Catalase amount was not proven in this study.

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Main Subjects

References

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Sport Physiology
Volume 12, Issue 45
Spring 2020
April 2020
Pages 129-152

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History

  • Receive Date: 29 September 2018
  • Revise Date: 20 November 2018
  • Accept Date: 04 December 2018

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