Weight Rhythms: Weight Increases During Weekends and Decreases During Weekdays

Orsama, Anna-Leena, Elina Mattila, Mikka Ermes, Mark van Gils, Brian Wansink, and Ilkka Korhonen (2014), “Weight Rhythms: Weight Increases During Weekends and Decreases During Weekdays,” Obesity Facts, 7, 36-47.

27 Pages Posted: 14 Sep 2013 Last revised: 29 Apr 2017

Anna-Leena Vuorinen

VTT Technical Research Centre of Finland

Elina Mattila

VTT Technical Research Centre of Finland

Miikka Ermes

VTT Technical Research Centre of Finland

Mark van Gils

VTT Technical Research Centre of Finland

Brian Wansink

Cornell University

Ilkka Korhonen

Tampere University of Technology

Date Written: September 11, 2013

Abstract

Background/Aims: The week’s cycle influences sleep, exercise, and eating habits. An accurate description of weekly weight rhythms has not been reported – especially across people who lose weight versus those who maintain or gain weight.

Methods: The daily weight in 80 adults (BMI, 20.0 to 33.5 kg/m2; age, 25 to 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 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 counseled about the importance of weekday compensation.

Keywords: Weight gain, weekly weight rhythm, patterns of weight fluctuation, compensation

Suggested Citation

Vuorinen, Anna-Leena and Mattila, Elina and Ermes, Miikka and van Gils, Mark and Wansink, Brian and Korhonen, Ilkka, Weight Rhythms: Weight Increases During Weekends and Decreases During Weekdays (September 11, 2013). Orsama, Anna-Leena, Elina Mattila, Mikka Ermes, Mark van Gils, Brian Wansink, and Ilkka Korhonen (2014), “Weight Rhythms: Weight Increases During Weekends and Decreases During Weekdays,” Obesity Facts, 7, 36-47. . Available at SSRN: https://ssrn.com/abstract=2324618

Anna-Leena Vuorinen

VTT Technical Research Centre of Finland ( email )

FIN-02044 VTT
Finland

Elina Mattila

VTT Technical Research Centre of Finland ( email )

FIN-02044 VTT
Finland

Miikka Ermes

VTT Technical Research Centre of Finland ( email )

FIN-02044 VTT
Finland

Mark Van Gils

VTT Technical Research Centre of Finland ( email )

FIN-02044 VTT
Finland

Brian Wansink (Contact Author)

Cornell University ( email )

Ithaca, NY 14853
United States

Ilkka Korhonen

Tampere University of Technology ( email )

P.O. 541, Korkeakoulunkatu 8 (Festia building)
Tampere, FI-33101
Finland

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