Goal
Differences in sleep / wake patterns have been observed between rural and urban populations – in Brazil and India – with strong social and technological contrast (Carvalho 2014, Nag 2012). To our knowledge, there are no such studies on European populations.

Methods
The sleep / wake rhythm was recorded by actimetry (MotionWatch8) over 7 days within a rural group of 54 participants (82.1 years, 48% women, AMI Gironde cohort) and an urban group of 49 participants (84.5 years, 51% women, 3Cités Bordeaux cohort). The parameters of the sleep / wake rhythm – time spent in bed, duration of sleep, latency to get up and fall asleep, sleep efficiency, waking time during sleep (WASO), sleep fragmentation, chronotype and acrophase – were compared between the two groups using age-corrected ANCOVA models.

Results
Urban residents have a shorter sleep duration ( p = 0.001) and lower sleep efficiency ( p = 0.001) than rural residents. These differences can be explained by a significantly longer latency to get up ( p = 0.001) and a tendency to fall asleep less quickly ( p = 0.07). Urban individuals also show a later chronotype compared to rural individuals ( p = 0.001). No significant difference was observed between the two groups for the other parameters measured.

Conclusion
These results, which show a difference in sleep / wake rhythm between French rural and urban populations, are in agreement with those observed in more strongly contrasted populations.

Direct Link: https://doi.org/10.1016/j.msom.2017.01.084

Journal: Sleep Medicine. 2017 Mar 1; 14 (1): 46

Keywords: older adults, rural, Sleep, sleep wake pattern, urban,

Applications: Sleep,

CamNtech Reference: M17021

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