Key term: non-restorative sleep

Original article [online first; 2 November 2017]   pdf
Objectively measured occupational and leisure-time physical activity: cross-sectional associations with sleep problems
Skarpsno ES, Mork PJ, Nilsen TIL, Jørgensen MB, Holtermann A
 
Original article 2012;38(5):427-435   pdf
The joint association of sleep duration and insomnia symptoms with disability retirement – a longitudinal, register-linked study
Haaramo P, Rahkonen O, Lahelma E, Lallukka T