CONTENTS — volume 37, no 1, 2011

Published: Jan 2011

Review

1
Physical conditioning programs for improving work outcomes among workers with back pain
Schaafsma F, Schonstein E, Ojajärvi A, ­Verbeek J
6
The repeatability and validity of questionnaires assessing occupational physical activity – a systematic review
Kwak L, Proper KI, Hagströmer M, Sjöström M

Original article

30
Physical workload and accelerated occurrence of lumbar spine diseases: risk and rate advancement periods in a German multicenter case–control study
Seidler A, Euler U, Bolm-Audorff U, Ellegast R, Grifka J, Haerting J, Jäger M, Michaelis M, Kuss O
37
Long-term effects of biomechanical exposure on severe knee pain in the Gazel cohort
Descatha A, Cyr D, Imbernon E, Chastang J-F, Plenet A, Bonenfant S, Zins M, Goldberg M, Roquelaure Y, Leclerc A
45
Does stress at work make you gain weight? A two-year longitudinal study
Berset M, Semmer NK, Elfering A, Jacobshagen N, Meier LL
54
Shift work trends and risk of work injury among Canadian workers
Wong IS, McLeod CB, Demers PA
62
A phase-advanced, extended sleep paradigm to increase sleep duration among early-morning shift workers: a preliminary investigation
Yeung J, Sletten TL, Rajaratnam SM
70
The effectiveness of yoga for the improvement of well-being and resilience to stress in the workplace
Hartfiel N, Havenhand J, Khalsa SB, Clarke G, Krayer A

Short communication

77
The effect of bright light on sleepiness among rapid-rotating 12-hour shift workers
Sadeghniiat-Haghighi K, Yazdi Z, Jahanihashemi H, Aminian O
80

Letter to the editor

Campbell C