Document Detail

The Effect of Time-of-Day and Ramadan Fasting on Anaerobic Performances.
MedLine Citation:
PMID:  22318530     Owner:  NLM     Status:  In-Data-Review    
This study was designed to assess the effects of Ramadan-intermittent-fasting (RIF) and time-of-day on muscle power and fatigue during the Wingate test. In a randomized design, 10 football players completed a Wingate test at 07:00 and 17:00 h on 3 different occasions: one week before Ramadan (BR), the second week of Ramadan (SWR) and the fourth week of Ramadan (ER). There was an interval of 36-h between any 2 successive tests. During the Wingate test, peak power (PP), mean power (MP) and the fatigue index (FI) were recorded. While PP, MP and FI were greater in the evening than in the morning during BR (p<0.001), these diurnal variations in muscle power disappeared during the month of Ramadan (i. e., SWR and ER) due to a significant decrease in PP and MP in the evening (p<0.001). However, the diurnal variation in FI when measured at 17:00 h increased during this month (p<0.001). In addition, ratings of perceived exertion and fatigue were higher in the evening during Ramadan in comparison with BR. These results suggest that Ramadan might modify the circadian rhythm of muscle power and fatigue during the Wingate test by decreasing power output and increasing muscle fatigue at the time of the acrophase.
H Chtourou; O Hammouda; A Chaouachi; K Chamari; N Souissi
Publication Detail:
Type:  Journal Article     Date:  2012-02-08
Journal Detail:
Title:  International journal of sports medicine     Volume:  33     ISSN:  1439-3964     ISO Abbreviation:  Int J Sports Med     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-02-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  142-7     Citation Subset:  IM    
Copyright Information:
© Georg Thieme Verlag KG Stuttgart · New York.
Research Laboratory "Sports performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia.
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