Sykes-Muskett, BJ, Prestwich, A orcid.org/0000-0002-7489-6415, Lawton, RJ orcid.org/0000-0002-5832-402X et al. (1 more author) (2017) The effect of pair-based monetary contingency contracts for weight loss: Results from a randomized controlled pilot study. Obesity, 25 (3). pp. 506-509. ISSN 1930-7381
Abstract
Objective: Monetary contingency contracts (MCCs), in which deposited money is returned contingent on weight loss, could promote weight/adiposity reduction. This study piloted individual- and pair-based MCCs (when refunds are contingent on two individuals losing weight) and assessed effects on weight/body composition. Methods: Seventy-seven participants with BMI greater than 25 kg/m2 were recruited. In a non-blinded, randomized controlled trial conducted in a university laboratory setting, participants were randomized in pairs via a computer-generated sequence to one of four conditions: partner with pair-based refund (P-PBR), partner with individual refund (P-IR), individual weight loss with individual refund (I-IR), or no MCC (comparison). Refunds were contingent on weight loss after 4 and 8 weeks; weight/body composition was measured at 0, 4, and 8 weeks. Primary outcome measures were change in weight and fat mass. Results: Seventy-seven participants (P-PBR n = 16; P-IR n = 20; I-IR n = 22; comparison n = 19) were recruited. Deposit amount was significantly positively associated with reductions in weight/BMI. At 8 weeks, the P-PBR condition reduced fat mass more than all other conditions (P < 0.05) and reduced weight/BMI more than the I-IR condition (P < 0.05). Conclusions: The large effect of P-PBR on fat mass suggests it would be valuable to conduct a fully powered, randomized controlled trial of pair-based MCCs.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The Obesity Society. This is the peer reviewed version of the following article: Sykes-Muskett, BJ, et al. (2017) The effect of pair-based monetary contingency contracts for weight loss: Results from a randomized controlled pilot study. Obesity 25(3):506-509, March 2017. ISSN 1930-7381; which has been published in final form at https://doi.org/10.1002/oby.21758. This article may be used for non-commercial purposes in accordance with the Wiley Terms and Conditions for Self-Archiving. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Psychology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Feb 2017 16:32 |
Last Modified: | 01 Feb 2018 01:39 |
Published Version: | https://doi.org/10.1002/oby.21758 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/oby.21758 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111810 |