Effect of fed- versus fasted state resistance training during Ramadan on body composition and selected metabolic parameters in bodybuilders

Abstract

BackgroundMuslim bodybuilders often continue training during Ramadan. However, the effect of resistance training in a fasted versus a fed state during Ramadan on body composition and metabolic parameters in bodybuilders is not well known. The aim of this study was to evaluate the effects of resistance training in a fasted versus a fed state during Ramadan on body composition and metabolic parameters in bodybuilders.MethodsSixteen men were allocated to two groups: Eight practicing resistance training in the late afternoon in a fasted state (FAST), and eight training in the late evening in an acutely fed state (FED) during Ramadan. All visited the laboratory in the morning two days before the start of Ramadan (Bef-R) and on the 29th day of Ramadan (End-R) for anthropometric measurement, completion of a dietary questionnaire, and provision of fasting blood and urine samples.ResultsBody mass and body fat percentage remained unchanged in FAST and FED during the whole period of the investigation. Both FAST and FED experienced an increase in the following parameters from Bef-R to End-R: urine specific gravity (1%; p = 0.028, p = 0.004 respectively), serum concentrations of urea (4%, p = 0.006; 7%, p = 0.004 respectively), creatinine (5%, p = 0.015; 6%, p = 0.04 respectively), uric acid (17%; p < 0.001, p = 0.04 respectively), sodium (1%; p = 0.029, p = 0.019 respectively), chloride (2%; p = 0.039, p = 0.004 respectively), and high-density lipoprotein cholesterol (11%, p = 0.04; 10%, p = 0.04 respectively).ConclusionHypertrophic training in a fasted or in a fed state during Ramadan does not affect body mass and body composition of bodybuilders. Additionally, Ramadan fasting induced changes in urinary and some biochemical parameters, but these changes were not different according to when the training occurred.

Effects of lenten fasting on body composition and biochemical parameters

“…28,29 We found no significant decrease in body fat, but visceral fat decreased significantly after the fasting of Lent. A significant decrease in fat mass was found at the end of Ramadan by Trabelsi et al 30 In present study the decrease in body weight is accompanied by non-significant decreases in fat free mass and fat mass. The results found on the parameters of body composition could be related to diet.…”

Evolution of Dietary Intake Between Before, During and After Ramadan Observance in Tunisian Physically Active Men: A Systematic Review

“…Compared to pre-and post-Ramadan, six studies indicated that daily energy intakes remained similar during Ramadan (14,(21)(22)(23)(24)(25). However, three studies showed a decrease of energy intake (26-28).…”

Effects of Intermittent Fasting, Caloric Restriction, and Ramadan Intermittent Fasting on Cognitive Performance at Rest and During Exercise in Adults

“…The duration of the daytime fast varies and is significantly impacted by the location and season. The typical fasting duration is generally 10 h, but can exceed 18 h [57][58][59][60][61][62]. A longer daylight period is found at extreme latitudes, and for these extreme fasting durations, some religious exceptions may apply [63].…”