The Effects of Intermittent Diet Breaks during 25% Energy Restriction on Body Composition and Resting Metabolic Rate in Resistance-Trained Females: A Randomized Controlled Trial

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dc.creatorSiedler, Madelin R. (TTU)
dc.creatorLewis, Megan H.
dc.creatorTrexler, Eric T.
dc.creatorLamadrid, Priscila
dc.creatorWaddell, Brian J.
dc.creatorBishop, Sarah F.
dc.creatorSanfilippo, Gillian
dc.creatorCallahan, Kaitlin
dc.creatorMathas, David
dc.creatorMastrofini, Gianna F.
dc.creatorHenselmans, Menno
dc.creatorVårvik, Fredrik T.
dc.creatorCampbell, Bill I.
dc.date.accessioned2023-06-13T18:59:47Z
dc.date.available2023-06-13T18:59:47Z
dc.date.issued2023
dc.description© 2023, Termedia Publishing House Ltd.. All rights reserved. cc-by
dc.description.abstractThe purpose of this study was to examine the effects of intermittent versus continuous energy restriction on body composition, resting metabolic rate, and eating behaviors in resistance-trained females. Thirty-eight resistance-trained females (mean ± standard deviation age: 22.3 ± 4.2 years) were randomized to receive either six weeks of a continuous 25% reduction in energy intake (n = 18), or one week of energy balance after every two weeks of 25% energy restriction (eight weeks total; n = 20). Participants were instructed to ingest 1.8 g protein/kilogram bodyweight per day and completed three weekly supervised resistance training sessions throughout the intervention. There were no differences between groups for changes over time in body composition, resting metabolic rate, or seven of the eight measured eating behavior variables (p > 0.05). However, a significant group-by-time interaction for disinhibition (p < 0.01) from the Three-Factor Eating Questionnaire was observed, with values (± standard error) in the continuous group increasing from 4.91 ± 0.73 to 6.17 ± 0.71, while values in the intermittent group decreased from 6.80 ± 0.68 to 6.05 ± 0.68. Thus, diet breaks do not appear to induce improvements in body composition or metabolic rate in comparison with continuous energy restriction over six weeks of dieting, but may be employed for those who desire a short-term break from an energy-restricted diet without fear of fat regain. While diet breaks may reduce the impact of prolonged energy restriction on measures of disinhibition, they also require a longer time period that may be less appealing for some individuals.
dc.identifier.citationSiedler, M.R., Lewis, M.H., Trexler, E.T., Lamadrid, P., Waddell, B.J., Bishop, S.F., Sanfilippo, G., Callahan, K., Mathas, D., Mastrofini, G.F., Henselmans, M., Varvik, F.T., & Campbell, B.I.. 2023. The Effects of Intermittent Diet Breaks during 25% Energy Restriction on Body Composition and Resting Metabolic Rate in Resistance-Trained Females: A Randomized Controlled Trial. Journal of Human Kinetics, 86. https://doi.org/10.5114/jhk/159960
dc.identifier.urihttps://doi.org/10.5114/jhk/159960
dc.identifier.urihttps://hdl.handle.net/2346/94076
dc.language.isoeng
dc.subjectfat mass
dc.subjectmetabolism
dc.subjectmuscle mass
dc.subjectphysique enhancement
dc.subjectweight loss
dc.titleThe Effects of Intermittent Diet Breaks during 25% Energy Restriction on Body Composition and Resting Metabolic Rate in Resistance-Trained Females: A Randomized Controlled Trial
dc.typeArticle

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