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Medicina dello Sport 2017 December;70(4):537-50

DOI: 10.23736/S0025-7826.17.02986-6

Copyright © 2017 EDIZIONI MINERVA MEDICA

language: English, Italian

The effect of two weeks Opuntia ficus-indica juice supplementation on heart rate and anaerobic performance

Khouloud ALOUI 1, 2, Salma ABEDELMALEK 3 , Hamdi CHTOUROU 2, Myriam DENGHEZLI 3, Nizar SOUISSI 2

1 Faculty of Sciences of Bizerte, University of Carthage, Bizerte, Tunisia; 2 Research Laboratory “Sports performance optimization” National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia; 3 Department of Physiology and functional explorations, Sousse Faculty of Medicine, Sousse, Tunisia


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BACKGROUND: The aim of this study was to investigate the effect of polyphenols-rich fruit juice supplementation on heart rate (HR), Sargent jump test, sprint 10 m and Wingate test (i.e. peak power [PP], mean power [MP] and Fatigue Index [FI]).
METHODS: In randomized order, twenty-two healthy subjects participated in this study divided into two groups: an experimental group (EG: N.=11) who consumed the antioxidant supplement and a control group (CG: N.=11). All groups performed sessions of test at 07:00 h before and after supplementation.
RESULTS: Our results showed that following the 2,2-diphenyl-1- picrylhydrazyl (DPPH●) test, the Opuntia ficus-indica juice has an antioxidant capacity for capturing free radicals (P<0.05). In addition, our results showed that HR values increased significantly after the Wingate test. Moreover, a significant enhancement on PP, MP and the FI (P<0.01) as well as the rating of perceived exertion (RPE) was observed. Furthermore, the performance of Sargent jump test (P<0.01) are significantly higher after Opuntia ficus-indica juice supplemetation and sprint performance are significantly reduced (p <0.05) after supplementation (P<0.01). Nevertheless, no significant effect on HR was observed after supplementation on Opuntia ficus-indica juice.
CONCLUSIONS: These results suggest that 14-day opuntia ficus-indica juice supplementation has an impact on anaerobic performance.


KEY WORDS: Antioxidants - Heart rate - Athletic performance

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