Prolonged sitting at work is associated with a favorable time course of low-back pain among blue-collar workers: a prospective study in the DPhacto cohort
Adult
Male
Denmark
Actigraph
blue-collar worker
03 medical and health sciences
Physical work demand
low-back pain
sedentary
0302 clinical medicine
prolonged sitting
text message
trajectory of pain
accelerometry
Humans
musculoskeletal disorder
pain
Key terms accelerometry
repeated measurement
Prospective Studies
Sedentary
Sitting Position
Musculoskeletal disorder
longitudinal study
Text message
Middle Aged
dphacto cohort
Trajectory of pain
Repeated measurement
actigraph
physical work demand
Female
Longitudinal study
Public aspects of medicine
RA1-1270
Low Back Pain
prospective study
DOI:
10.5271/sjweh.3726
Publication Date:
2018-03-15T06:43:06Z
AUTHORS (6)
ABSTRACT
Objective Low-back pain (LBP) is a massive health problem. Sitting at work has been suggested to be both a risk and protective factor for LBP. Thus, the objective of this study was to investigate the association between total and temporal patterns of objectively measured sitting duration and individual time course of LBP. Methods The analysis was performed among 665 participants from the DPhacto cohort of mainly blue-collar workers. Sitting at work was measured by accelerometry at baseline, expressed in total duration and temporal pattern [% of working time spent in brief bursts (≤5 minutes), moderate (>5 - ≤20 minutes) and prolonged periods (>20 minutes)] of sitting. Time course of LBP (0-10 scale) were collected by monthly text messages across one year. Linear mixed models were applied to investigate the association, adjusting for potential confounders. Results Significant negative associations between sitting duration at work and adjusted time course of LBP were found; total sitting (B -0.01, 95% CI -0.01- -0.004), brief bursts (B -0.01, 95% CI -0.02- -0.01), moderate (B -0.01, 95% CI -0.01- -0.008) and prolonged periods (B -0.01, 95% CI -0.02- -0.01). Meaning, a 5-minute increase of sitting at work will correspond to a decrease in one year time course of LBP by -0.05 points. Conclusion Longer duration of total and temporal sitting periods at work was significantly associated with a favorable time course of LBP. This finding shows sitting at work to be beneficial for LBP, among populations of mainly blue-collar workers, by protecting from LBP aggravation.
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