Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial

Abstract Time‐restricted feeding (TRF) and aerobic exercise are lifestyle interventions to prevent or manage different metabolic diseases. How these interventions interact, including the impact of meal timing, is not well understood. The aim of this study was to examine the influence of TRF on fat o...

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Main Authors: Florian Hofstätter, Martin Niedermeier, Linda K. Rausch, Martin Kopp, Lydia Simpson, Justin S. Lawley
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Physiological Reports
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Online Access:https://doi.org/10.14814/phy2.70194
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author Florian Hofstätter
Martin Niedermeier
Linda K. Rausch
Martin Kopp
Lydia Simpson
Justin S. Lawley
author_facet Florian Hofstätter
Martin Niedermeier
Linda K. Rausch
Martin Kopp
Lydia Simpson
Justin S. Lawley
author_sort Florian Hofstätter
collection DOAJ
description Abstract Time‐restricted feeding (TRF) and aerobic exercise are lifestyle interventions to prevent or manage different metabolic diseases. How these interventions interact, including the impact of meal timing, is not well understood. The aim of this study was to examine the influence of TRF on fat oxidation during exercise, whereby participants performed an 8‐week fatmax‐training program either in the fasted state or after a carbohydrate‐based snack. 36 participants were randomized into three groups. (1) Training sessions were performed in the fasted state; (2) Training sessions were performed after consuming a standardized carbohydrate‐based snack; (3) Exercise training with an ad libitum diet as a control group. Pre‐ and post‐tests included anthropometric measurements and a fatmax‐cycle‐ergometry protocol to measure substrate oxidation. Data were analyzed as workload‐matched and maximal fat oxidation using a series of mixed ANOVAs. Workload‐matched (p = 0.038) and maximal (p < 0.001) fat oxidation improved in all groups. No significant group × time interactions were found in substrate utilization. Time had a significant effect on body weight (p = 0.011), fat mass (p < 0.001), and muscle mass (p < 0.001). Results suggest that fatmax exercise training leads to improvements in fat oxidative capacity independent of fed or fasted state.
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spelling doaj-art-7c9f88245c8540549b20de025aaa76bf2025-01-27T13:49:52ZengWileyPhysiological Reports2051-817X2025-01-01132n/an/a10.14814/phy2.70194Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trialFlorian Hofstätter0Martin Niedermeier1Linda K. Rausch2Martin Kopp3Lydia Simpson4Justin S. Lawley5Department of Sport Science University of Innsbruck Innsbruck AustriaDepartment of Sport Science University of Innsbruck Innsbruck AustriaDepartment of Sport Science University of Innsbruck Innsbruck AustriaDepartment of Sport Science University of Innsbruck Innsbruck AustriaDepartment of Sport Science University of Innsbruck Innsbruck AustriaDepartment of Sport Science University of Innsbruck Innsbruck AustriaAbstract Time‐restricted feeding (TRF) and aerobic exercise are lifestyle interventions to prevent or manage different metabolic diseases. How these interventions interact, including the impact of meal timing, is not well understood. The aim of this study was to examine the influence of TRF on fat oxidation during exercise, whereby participants performed an 8‐week fatmax‐training program either in the fasted state or after a carbohydrate‐based snack. 36 participants were randomized into three groups. (1) Training sessions were performed in the fasted state; (2) Training sessions were performed after consuming a standardized carbohydrate‐based snack; (3) Exercise training with an ad libitum diet as a control group. Pre‐ and post‐tests included anthropometric measurements and a fatmax‐cycle‐ergometry protocol to measure substrate oxidation. Data were analyzed as workload‐matched and maximal fat oxidation using a series of mixed ANOVAs. Workload‐matched (p = 0.038) and maximal (p < 0.001) fat oxidation improved in all groups. No significant group × time interactions were found in substrate utilization. Time had a significant effect on body weight (p = 0.011), fat mass (p < 0.001), and muscle mass (p < 0.001). Results suggest that fatmax exercise training leads to improvements in fat oxidative capacity independent of fed or fasted state.https://doi.org/10.14814/phy2.70194fat oxidationfatmax trainingmeal timingtime restricted feeding
spellingShingle Florian Hofstätter
Martin Niedermeier
Linda K. Rausch
Martin Kopp
Lydia Simpson
Justin S. Lawley
Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
Physiological Reports
fat oxidation
fatmax training
meal timing
time restricted feeding
title Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
title_full Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
title_fullStr Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
title_full_unstemmed Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
title_short Effects of time‐restricted feeding and meal timing on an 8‐week fat oxidation exercise training program—A randomized controlled trial
title_sort effects of time restricted feeding and meal timing on an 8 week fat oxidation exercise training program a randomized controlled trial
topic fat oxidation
fatmax training
meal timing
time restricted feeding
url https://doi.org/10.14814/phy2.70194
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