• M G H van Weering, M M R Vollenbroek-Hutten, T M Tönis, and H J Hermens.
• Roessingh Research and Development, Enschede, The Netherlands. m.vanweering@rrd.nl
• Eur J Pain. 2009 Jul 1;13(6):649-54.

BackgroundNormalization of activities in daily living is an important goal in rehabilitation treatment of chronic lower back pain (CLBP) patients. Clinicians indicate that CLBP patients often show deconditioning but also CLBP patients who seem to be too active are seen. The objective of the present cross-sectional study was to gain more insight into the daily activity pattern of CLBP patients compared to controls, using accelerometry.MethodsDaily activities were assessed by measuring body movement with a tri-axial accelerometer that was worn for seven consecutive days during waking hours. Measurements were performed in the daily environment (in-doors and out-doors) of the participant. Differences between activity level, time of day and work status were tested.ResultsData were obtained from 29 CLBP patients and 20 controls. Results show that the overall activity levels of patients (mean 0.75; SD 0.43) are not significantly different from those of controls (mean 0.71; SD 0.44). However, patients show significantly higher activity levels in the morning (p<0.001) and significantly lower activity levels in the evening (p<0.01) compared to controls. No significant differences in activity levels were found between leisure time and working days within either group; furthermore no significant differences in activity levels were found between patients with different work status.ConclusionOverall activity levels do not differ significantly between CLBP patients and controls, but the distribution of activities over the day differs significantly.

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