FitProven
Evidence Breakdown
Based on 3 studies
Evidence map
For & against, at a glance
RCT
Pro
Moro T et al. · 2016Journal of Translational Medicine8-week RCT in resistance-trained males comparing 16:8 time-restricted feeding to normal meal timing, both with matched caloric intake. The IF group lost significantly more fat mass while maintaining muscle mass. Testosterone and IGF-1 decreased in the IF group while adiponectin increased. Provides some evidence that IF may offer modest fat loss advantages in specific populations.
0.60
8-week RCT in resistance-trained males comparing 16:8 time-restricted feeding to normal meal timing, both with matched caloric intake. The IF group lost significantly more fat mass while maintaining muscle mass. Testosterone and IGF-1 decreased in the IF group while adiponectin increased. Provides some evidence that IF may offer modest fat loss advantages in specific populations.
Design RCT (0.8) × quality 0.75 = impact 0.60
View sourceMeta-Analysis
Con
Cioffi I et al. · 2018Nutrition ReviewsMeta-analysis of 12 RCTs comparing intermittent energy restriction to continuous energy restriction. No significant difference was found in body weight loss, fat mass reduction, or fat-free mass between groups. The authors concluded that intermittent fasting is a viable alternative to continuous dieting but does not produce superior fat loss.
0.90
Meta-analysis of 12 RCTs comparing intermittent energy restriction to continuous energy restriction. No significant difference was found in body weight loss, fat mass reduction, or fat-free mass between groups. The authors concluded that intermittent fasting is a viable alternative to continuous dieting but does not produce superior fat loss.
Design Meta-Analysis (1.0) × quality 0.90 = impact 0.90
View sourceRCT
Con
Schoenfeld BJ et al. · 2014Journal of the International Society of Sports NutritionRCT comparing body composition changes in women performing fasted versus fed aerobic exercise over 4 weeks while in a caloric deficit. Both groups lost significant body mass and fat mass, but there were no significant differences between groups. The study did not support the claim that exercising in a fasted state enhances fat loss.
0.62
RCT comparing body composition changes in women performing fasted versus fed aerobic exercise over 4 weeks while in a caloric deficit. Both groups lost significant body mass and fat mass, but there were no significant differences between groups. The study did not support the claim that exercising in a fasted state enhances fat loss.
Design RCT (0.8) × quality 0.78 = impact 0.62
View sourceRCT
Pro
Moro T et al. · 2016Journal of Translational Medicine8-week RCT in resistance-trained males comparing 16:8 time-restricted feeding to normal meal timing, both with matched caloric intake. The IF group lost significantly more fat mass while maintaining muscle mass. Testosterone and IGF-1 decreased in the IF group while adiponectin increased. Provides some evidence that IF may offer modest fat loss advantages in specific populations.
0.60
8-week RCT in resistance-trained males comparing 16:8 time-restricted feeding to normal meal timing, both with matched caloric intake. The IF group lost significantly more fat mass while maintaining muscle mass. Testosterone and IGF-1 decreased in the IF group while adiponectin increased. Provides some evidence that IF may offer modest fat loss advantages in specific populations.
Design RCT (0.8) × quality 0.75 = impact 0.60
View sourceMeta-Analysis
Con
Cioffi I et al. · 2018Nutrition ReviewsMeta-analysis of 12 RCTs comparing intermittent energy restriction to continuous energy restriction. No significant difference was found in body weight loss, fat mass reduction, or fat-free mass between groups. The authors concluded that intermittent fasting is a viable alternative to continuous dieting but does not produce superior fat loss.
0.90
Meta-analysis of 12 RCTs comparing intermittent energy restriction to continuous energy restriction. No significant difference was found in body weight loss, fat mass reduction, or fat-free mass between groups. The authors concluded that intermittent fasting is a viable alternative to continuous dieting but does not produce superior fat loss.
Design Meta-Analysis (1.0) × quality 0.90 = impact 0.90
View sourceRCT
Con
Schoenfeld BJ et al. · 2014Journal of the International Society of Sports NutritionRCT comparing body composition changes in women performing fasted versus fed aerobic exercise over 4 weeks while in a caloric deficit. Both groups lost significant body mass and fat mass, but there were no significant differences between groups. The study did not support the claim that exercising in a fasted state enhances fat loss.
0.62
RCT comparing body composition changes in women performing fasted versus fed aerobic exercise over 4 weeks while in a caloric deficit. Both groups lost significant body mass and fat mass, but there were no significant differences between groups. The study did not support the claim that exercising in a fasted state enhances fat loss.
Design RCT (0.8) × quality 0.78 = impact 0.62
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Evidence
PRO (1)
PRO RCT 0.75 Moro T, Tinsley G et al. (2016)
8-week RCT in resistance-trained males comparing 16:8 time-restricted feeding to normal meal timing, both with matched caloric intake. The IF group lost significantly more fat mass while maintaining muscle mass. Testosterone and IGF-1 decreased in the IF group while adiponectin increased. Provides some evidence that IF may offer modest fat loss advantages in specific populations.
Journal of Translational Medicine
AGAINST (2)
AGAINST Meta-Analysis 0.90 Cioffi I, Evangelista A et al. (2018)
Meta-analysis of 12 RCTs comparing intermittent energy restriction to continuous energy restriction. No significant difference was found in body weight loss, fat mass reduction, or fat-free mass between groups. The authors concluded that intermittent fasting is a viable alternative to continuous dieting but does not produce superior fat loss.
Nutrition Reviews
AGAINST RCT 0.78 Schoenfeld BJ, Aragon AA et al. (2014)
RCT comparing body composition changes in women performing fasted versus fed aerobic exercise over 4 weeks while in a caloric deficit. Both groups lost significant body mass and fat mass, but there were no significant differences between groups. The study did not support the claim that exercising in a fasted state enhances fat loss.
Journal of the International Society of Sports Nutrition