Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2007) 06, 490 - 497

Research article
Influence of Ramadan Fasting on Anaerobic Performance and Recovery Following Short time High Intensity Exercise
Umid Karli1, Alpay Guvenc2, Alper Aslan2, Tahir Hazir2, Caner Acikada,2 
Author Information
1 School of Physical Education and Sports, Abant Izzet Baysal University, Bolu, Turkey
2 School of Sport Sciences and Technology, Hacettepe University, Ankara, Turkey

Caner Acikada
✉ School of Sport Sciences and Technology, Hacettepe University, 06532 Ankara, Turkey.
Email: acikada@hacettepe.edu.tr
Publish Date
Received: 20-06-2007
Accepted: 10-09-2007
Published (online): 01-12-2007
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ABSTRACT

The aim of this study was to investigate the effects of Ramadan fasting on anaerobic power and capacity and the removal rate of lactate after short time high intensity exercise in power athletes. Ten male elite power athletes (2 wrestlers, 7 sprinters and 1 thrower, aged 20-24 yr, mean age 22.30 ± 1.25 yr) participated in this study. The subjects were tested three times [3 days before the beginning of Ramadan (Pre-RF), the last 3 days of Ramadan (End-RF) and the last 3 days of the 4th week after the end of Ramadan (After-RF)]. Anaerobic power and capacity were measured by using the Wingate Anaerobic Test (WAnT) at Pre-RF, End-RF and After- RF. Capillary blood samples for lactate analyses and heart rate recordings were taken at rest, immediately after WAnT and throughout the recovery period. Repeated measures of ANOVA indicated that there were no significant changes in body weight, body mass index, fat free mass, percentage of body fat, daily sleeping time and daily caloric intake associated with Ramadan fasting. No significant changes were found in total body water either, but urinary density measured at End-RF was significantly higher than After-RF. Similarity among peak HR and peak LA values at Pre-RF, End- RF and After-RF demonstrated that cardiovascular and metabolic stress caused by WAnT was not affected by Ramadan fasting. In addition, no influence of Ramadan fasting on anaerobic power and capacity and removal rate of LA from blood following high intensity exercise was observed. The results of this study revealed that if strength-power training is performed regularly and daily food intake, body fluid balance and daily sleeping time are maintained as before Ramadan, Ramadan fasting will not have adverse effects on body composition, anaerobic power and capacity, and LA metabolism during and after high intensity exercise in power athletes.

Key words: Ramadan fasting, anaerobic power and capacity, lactate, passive recovery, power athletes


           Key Points
  • No significant changes were assessed on body composition, daily sleeping time and caloric intake, and body fluid balance in regularly trained power athletes during Ramadan fasting.
  • Ramadan fasting has no adverse effect on power outputs of short time high intensity exercise.
  • No influence of Ramadan fasting on LA metabolism during high intensity exercise and passive recovery in regularly trained power athletes.
 
 
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