Can Reverse Dieting Prevent Weight Regain After Weight Loss
Does Slow Reintroduction of Calories After Weight Loss Prevent Weight Regain in Trained Athletes? A Feasibility Study
1 other identifier
observational
3
0 countries
N/A
Brief Summary
Introduction: It is known that weight loss results in decreased Resting Energy Expenditure (REE), due to a decrease in lean body mass (LBM), but also due to metabolic adaptation, resulting in a higher energy efficiency, responsible for weight regain. Powerlifting athletes submit themselves to caloric restriction before a competition to reach their desired weight category. After cessation of the restrictive diet body mass will quickly return to pre-diet values with a disproportionate gain of fat mass. To avoid fat gain 'reversed dieting' has become popular among athletes. This involves increasing caloric intake in a stepwise fashion with the assumption that the small increases in caloric intake might help to restore energy expenditure toward pre-dieting levels and decrease the chance of increasing fat mass. While anecdotal reports of successful reverse dieting are available, research is needed to evaluate its true efficacy. In addition, if the method would work in non-athletes this could be an important change in the risk of weight regain after a weight loss diet. . Aim: To test the effects of the reverse dieting protocol in the prevention of metabolic adaptation following a period of caloric restriction in weight training athletes. . Methods: A convenience sample of 3 powerlifters is used in this study. They are submitted to a 750kcal/day caloric deficit with a protein intake set at 2x bodyweight (kg) and 30%en from fat for 6 weeks, adjusted weekly. The reverse dieting protocol adds 100kcal during week 1-4 and 150kcal during week 5-8. REE is measured bi-weekly and body composition at day 1 of caloric restriction and day 1 and day 56 of reverse dieting. Exercise is kept constant during the entire period. .
Trial Health
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Started Jul 2016
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 17, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 27, 2016
CompletedStudy Completion
Last participant's last visit for all outcomes
October 27, 2016
CompletedFirst Submitted
Initial submission to the registry
February 9, 2018
CompletedFirst Posted
Study publicly available on registry
February 15, 2018
CompletedMarch 1, 2019
February 1, 2019
3 months
February 9, 2018
February 27, 2019
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Metabolic adaptation
energy expended per unit lean body mass
July 2017-October 2017
Interventions
Eligibility Criteria
a convenience sample of 3 male powerlifters
You may qualify if:
- member of the GMU powerlifting team
You may not qualify if:
- no member of the GMU powerlifting team
Contact the study team to confirm eligibility.
Sponsors & Collaborators
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- CROSS SECTIONAL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor, Nutrition and Food Studies, College of Health and Human Services
Study Record Dates
First Submitted
February 9, 2018
First Posted
February 15, 2018
Study Start
July 17, 2016
Primary Completion
October 27, 2016
Study Completion
October 27, 2016
Last Updated
March 1, 2019
Record last verified: 2019-02
Data Sharing
- IPD Sharing
- Will not share