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11:15
Determining the Contribution of the Energy Systems During Exercise
Published on: March 20, 2012
Ramadan and Its Effect on Fuel Selection during Exercise and Following Exercise Training
1School of Sport and Exercise, Massey University, New Zealand.
Asian Journal of Sports Medicine
|March 1, 2012
Summary
Regular fasting, like during Ramadan, enhances the body's ability to use fat for fuel, similar to endurance exercise adaptations. This improves metabolic flexibility for future fasting periods.
Area of Science:
- Metabolic Physiology
- Exercise Science
- Nutritional Biochemistry
Background:
- Fasting triggers physiological adaptations to conserve carbohydrates and mobilize lipids for energy.
- Repeated fasting and refeeding cycles in rodents enhance muscle lipid oxidation, improving fasting tolerance.
- Endurance exercise also stresses muscle metabolism, promoting lipid utilization.
Purpose of the Study:
- To review research on physiological adaptations to repeated fasting/refeeding, using Ramadan as a human model.
- To explore similarities between fasting-induced adaptations and those from endurance training.
- To examine the combined effects of fasting and exercise training on muscle and exercise response.
Main Methods:
- Literature review of studies on fasting, refeeding, endurance exercise, and Ramadan.
- Analysis of research investigating athletes training during Ramadan.
- Focus on adaptations in skeletal muscle's fuel utilization.
Main Results:
- Repeated fasting/refeeding enhances muscle's capacity for lipid oxidation.
- Adaptations to endurance training mirror those induced by repeated fasting.
- Combined fasting and exercise training present unique metabolic challenges and adaptations.
Conclusions:
- Repeated fasting promotes metabolic adaptations beneficial for fuel utilization during subsequent fasting.
- Exercise training induces similar metabolic adaptations, enhancing lipid oxidation.
- Understanding these adaptations is crucial for athletes observing religious fasting periods like Ramadan.
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