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A randomized crossover investigation of a back pain and disability prevention program: possible mechanisms of change
Donaldson CS, Stanger LM, Donaldson MW, Cram J, Skubick DL
Journal of Occupational Rehabilitation 1993 Jun;3(2):83-94
clinical trial
4/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

An educational program which emphasized the symmetrical use of back muscles was studied at a health care facility which had extremely high time lost injury rates due to back strains. Participants (N = 180) were involved with half studying an educational program entitled "Back to Balance" with the remainder serving as controls. After 3 months, the controls studied the program. All subjects completed psychological tests, received cervical and lumbar paraspinal dynamic EMG evaluations four times (pre- and post-treatment, and after 3 and 12 months). Administrative indices (costs, incidence, and time lost injury rate) were obtained for the 3 years prior to the study and for the 1 year of the study. The 1-year results showed decreased pain, retained knowledge which was generalized to the home, and significantly improved symmetry of both sets of muscles. Administrative data revealed a 72% decrease in the time lost injury rate with reduced costs.

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