Sleep Duration and Timing in the Medium- to Long-Term Post-Bariatric Surgery
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BRIEF COMMUNICATION
Sleep Duration and Timing in the Medium- to Long-Term Post-Bariatric Surgery Ryan E. R. Reid 1
&
Jessica McNeil 2 & George Roumeliotis 3 & Tyler G. R. Reid 4 & Tamara E. Carver 5 & Ross E. Andersen 1
# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Sleep duration improves short-term following bariatric surgery; however, little is known about its association with bodyweight medium- to long-term post-surgery. The purpose of this study was to describe sleep duration and its relationship with BMI and body composition. Forty-nine individuals, with a BMI of 36.6 ± 9.8 kg/m2, regained 26.4 ± 17.8% of their lost weight 9.5 ± 3.3 years post-surgery (range 3–16 years). Sleep logs and ActivPAL3 accelerometers were used to assess sleep duration. Participants averaged 7.9 ± 1.6 h/day and 8.5 ± 1.7 h/day of sleep for weekdays and weekends, respectively (P < 0.01). A positive association between delta weekend-weekday sleep timing midpoint with BMI (β = 0.03, 95% CI = 0.01, 0.06; P = 0.01) was noted in the multivariable-adjusted model. On average, this sample achieved recommended sleep durations medium- to longterm post-surgery. Having an earlier sleep timing midpoint during the weekend may be associated with lower BMI. Keywords Gastric bypass . RYGB . Obesity . Accelerometry . Sleep length . Sleep timing midpoint
Introduction Obesity affects one third of the North American population and is a risk factor for the metabolic syndrome, cardiovascular disease, and respiratory disorders such as obstructive sleep apnea [1, 2]. Shorter (< 7 h of sleep/night) and/or longer (> 9 h of sleep/night) sleep durations have been associated with weight gain, as well as increases in waist circumference and body fat percentage [3].
Bariatric surgery effectively manages obesity while eliminating or significantly reducing obstructive sleep apnea in most patients [4]. One study reported that pre-surgery bariatric patients have shorter sleep durations and a greater frequency of sleep disruptions than individuals without obesity [5]. Shortly following surgery, or dramatic weight loss, marked improvements in both sleep duration and quality have been noted [4, 5]. One study also reported that having an evening chronotype, or a greater propensity to go to bed later during
Ryan E. R. Reid and Jessica McNeil contributed equally to this work. * Ryan E. R. Reid [email protected] Jessica McNeil [email protected] George Roumeliotis [email protected]
1
Department of Kinesiology and Physical Education, McGill University, 475 avenue des Pins Ouest, Montreal, QC, Canada
2
Department of Cancer Epidemiology and Prevention Research, CancerControl Alberta, Alberta Health Services, Calgary, AB, Canada
3
School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
4
Department of Aeronautics and Astronautics, Stanford University, Stanford, CA, USA
5
Department of Family Medicine, McGill University, Montreal, QC, Canada
Tyler G. R. Reid
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