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. 2017 Nov 1:9:267-275.
doi: 10.2147/NSS.S145777. eCollection 2017.

Sleep positions and nocturnal body movements based on free-living accelerometer recordings: association with demographics, lifestyle, and insomnia symptoms

Eivind Schjelderup Skarpsno  1   2 , Paul Jarle Mork  1 , Tom Ivar Lund Nilsen  1 , Andreas Holtermann  3   4
Affiliations

Sleep positions and nocturnal body movements based on free-living accelerometer recordings: association with demographics, lifestyle, and insomnia symptoms

Eivind Schjelderup Skarpsno et al. Nat Sci Sleep. .

Abstract

Background: In order to establish normative values for body positions and movements during sleep, the objective of this study was to explore the distribution of sleep positions and extent of nocturnal body moments and the association with sex, age, body-mass index (BMI), smoking, alcohol consumption, and insomnia symptoms.

Materials and methods: This cross-sectional study comprised data on a working population (363 men and 301 women) who participated in the Danish Physical Activity Cohort with Objective Measurements (DPHACTO). Measures of body position and movements were obtained from actigraph accelerometers on the thigh, upper back, and upper arm. Linear regression was used to estimate adjusted mean differences in movements among categories of demographic and lifestyle characteristics.

Results: During their time in bed, participants spent 54.1% (SD 18.1%) in the side position, 37.5% (SD 18.2%) in the back position, and 7.3% (SD 12.3%) in the front position. Increasing age and BMI were associated with increased time in the side position and a proportional reduction in time in the back position. There were on average 1.6 (SD 0.7) position shifts per hour. Compared to males, females had fewer position shifts (-0.37, 95% CI -0.48 to -0.24) and fewer arm, thigh, and upper-back movements. Participants aged 20-34 years had more arm, thigh, and upper-back movements compared to participants ≥35 years. Obese participants had fewer shifts in body position (-0.15, 95% CI -0.27 to 0), but more arm, thigh, and upper-back movements compared to normal-weight participants. Smokers had fewer shifts in body position than nonsmokers (-0.27, 95% CI -0.4 to -0.13).

Conclusion: The predominant sleep position in adults is on the side. This preference increases with age and BMI. The extent of nocturnal body movements is associated with sex, age, BMI, and smoking.

Keywords: accelerometers; body movements; lifestyle; sleep; sleep positions.

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Conflict of interest statement

Disclosure The authors report no conflicts of interest in this work.

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References

    1. De Koninck J, Gagnon P, Lallier S. Sleep positions in the young adult and their relationship with the subjective quality of sleep. Sleep. 1983;6(1):52–59. - PubMed
    1. Oksenberg A, Khamaysi I, Silverberg DS, Tarasiuk A. Association of body position with severity of apneic events in patients with severe nonpositional obstructive sleep apnea. Chest. 2000;118(4):1018–1024. - PubMed
    1. Horne RS, Franco P, Adamson TM, Groswasser J, Kahn A. Effects of body position on sleep and arousal characteristics in infants. Early Hum Dev. 2002;69(1–2):25–33. - PubMed
    1. Leung RS, Bowman ME, Parker JD, Newton GE, Bradley TD. Avoidance of the left lateral decubitus position during sleep in patients with heart failure: relationship to cardiac size and function. J Am Coll Cardiol. 2003;41(2):227–230. - PubMed
    1. Hoffstein V. Snoring. Chest. 1996;109(1):201–222. - PubMed

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