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The influence of an anteriorly tilted chair and ergonomic adaptations on low back pain in sedentary office workers -- a comparative study
van Heerden M, Noteboom H, Thomas C, Walters G, Winter B
South African Journal of Physiotherapy 1988;44(3):78-83
clinical trial
1/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: No; Point estimates and variability: No. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

In this cohort analytical study sixty, four sedentary female office workers between 25 and 45 years of age and who suffered from low back pain were selected from three firms by means of a questionnaire. The study was conducted over a period of three months. Each of these firms (groups) was randomly allocated to one of the proposed procedures viz. (1) an anteriorly tilted chair (MAPC group) (n = 22); (2) an ergonomically adapted workspace and physiotherapy advice (EGPA group) (n = 22); (3) a control group (n = 14). Their experience of low back pain was monitored daily by means of a questionnaire and a pain thermometer (in the form of a diary). A second questionnaire was completed at the end of the study to obtain information about their experience of the adapted workspace as well as the tilted chair.

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