The effects of diurnal Ramadan fasting on energy expenditure and substrate oxidation in healthy men
| Autor: | Liam P. Kelly, Alicia Baker, Sukhinder K. Cheema, Denis R. Joanisse, Vikram Chandurkar, Fabien A. Basset, Adeboye Adebayo, Mohammad Ismail, Sana’a A. Alsubheen, Jason Blair |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Adult Blood Glucose Male Evening Medicine (miscellaneous) Blood lipids 030209 endocrinology & metabolism Carbohydrate metabolism Islam Body Mass Index 03 medical and health sciences Young Adult 0302 clinical medicine Animal science Lipid oxidation Surveys and Questionnaires Intermittent fasting Humans Insulin Triglycerides Morning Adiposity 030109 nutrition & dietetics Nutrition and Dietetics Chemistry Calorimetry Indirect Fasting Lipid Metabolism Cholesterol Case-Control Studies Lean body mass Body Composition Energy Metabolism Body mass index Oxidation-Reduction |
| Zdroj: | The British journal of nutrition. 118(12) |
| ISSN: | 1475-2662 |
| Popis: | The study aimed to examine the effects of diurnal Ramadan fasting (RF) on substrate oxidation, energy production, blood lipids and glucose as well as body composition. Nine healthy Muslim men (fasting (FAST) group) and eight healthy non-practicing men (control (CNT) group) were assessed pre- and post-RF. FAST were additionally assessed at days 10, 20 and 30 of RF in the morning and evening. Body composition was determined by hydrodensitometry, substrate oxidation and energy production by indirect calorimetry, blood metabolic profile by biochemical analyses and energy balance by activity tracker recordings and food log analyses. A significant group×time interaction revealed that chronic RF reduced body mass and adiposity in FAST, without changing lean mass, whereas CNT subjects remained unchanged. In parallel to these findings, a significant main diurnal effect (morning v. evening) of RF on substrate oxidation (a shift towards lipid oxidation) and blood metabolic profile (a decrease in glucose and an increase in total cholesterol and TAG levels, respectively) was observed, which did not vary over the course of the Ramadan. In conclusion, although RF induces diurnal metabolic adjustments (morning v. evening), no carryover effect was observed throughout RF despite the extended daily fasting period (18·0 (sd 0·3) h) and changes in body composition. |
| Databáze: | OpenAIRE |
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