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7, No. 1, 2014
Issue release date: February 2014

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Obes Facts 2014;7:36-47
(DOI:10.1159/000356147)

Weight Rhythms: Weight Increases during Weekends and Decreases during Weekdays

Orsama A.-L. · Mattila E. · Ermes M. · van Gils M. · Wansink B. · Korhonen I.
aVTT Technical Research Centre of Finland, Tampere, Finland, bCharles S. Dyson School of Applied Economics and Management, Cornell University, Ithaca, NY, USA, cDepartment of Biomedical Engineering, Tampere University of Technology, Tampere, Finland

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Abstract

Background/Aims: The week's cycle influences sleep, exercise, and eating habits. An accurate description of weekly weight rhythms has not been reported yet - especially across people who lose weight versus those who maintain or gain weight. Methods: The daily weight in 80 adults (BMI 20.0-33.5 kg/m2; age, 25-62 years) was recorded and analysed to determine if a group-level weekly weight fluctuation exists. This was a retrospective study of 4,657 measurements during 15-330 monitoring days. Semi-parametric regression was used to model the rhythm. Results: A pattern of daily weight changes was found (p < 0.05), with higher weight early in the week (Sunday and Monday) and decreasing weight during the week. Increases begin on Saturday and decreases begin on Tuesday. This compensation pattern was strongest for those who lost or maintained weight and weakest for those who slowly gained weight. Conclusion: Weight variations between weekends and weekdays should be considered as normal instead of signs of weight gain. Those who compensate the most are most likely to either lose or maintain weight over time. Long-term habits may make more of a difference than short-term splurges. People prone to weight gain could be counselled about the importance of weekday compensation. © 2014 S. Karger GmbH, Freiburg



 goto top of outline Author Contacts

Dr. Brian Wansink
Charles S. Dyson School of Applied Economics and Management, Cornell University
15 Warren Hall, Ithaca, NY 14850 (USA)
foodandbrandlab@cornell.edu


 goto top of outline Article Information

Received: May 14, 2013
Accepted: September 04, 2013
Published online: January 31, 2014
Number of Print Pages : 12
Number of Figures : 2, Number of Tables : 4, Number of References : 41


 goto top of outline Publication Details

Obesity Facts (The European Journal of Obesity)

Vol. 7, No. 1, Year 2014 (Cover Date: February 2014)

Journal Editor: Hauner H. (München)
ISSN: 1662-4025 (Print), eISSN: 1662-4033 (Online)

For additional information: http://www.karger.com/OFA


Open Access License / Drug Dosage

Open Access License: This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) (www.karger.com/OA-license), applicable to the online version of the article only. Distribution permitted for non-commercial purposes only.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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