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The effect of neck-specific exercise with or without a behavioral approach on psychological factors in chronic whiplash-associated disorders: a randomized controlled trial with a 2-year follow-up
Overmeer T, Peterson G, Landen Ludvigsson M, Peolsson A
Medicine 2016 Aug;95(34):e4430
clinical trial
8/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND: To investigate the effect of neck-specific exercise with (NSEB) or without (NSE) a behavioural approach and prescribed physical activity (PPA) on general pain disability and psychological factors in chronic whiplash-associated disorders (WAD), grade 2 and 3, with a 2-year follow-up. METHODS: A randomized controlled multi-centre study of 3 exercise interventions (NSE, NSEB or PPA) including a 2-year follow-up. A total of 216 volunteers with chronic WAD were recruited and 194 were analyzed, mean age 40.4 (standard deviation (SD) 11.4). Measures of general pain disability, pain catastrophizing, anxiety and depression, and kinesiophobia were evaluated at baseline, and 3, 6, 12 and 24 months with linear mixed models. RESULTS: General pain disability decreased by 28% in the NSEB group from baseline to 3 months (p < 0.001) and the improvements in disability were maintained over time (6, 12 and 24 months p < 0.01) compared to the NSE (p > 0.42) and PPA groups (p > 0.43). Pain catastrophizing decreased in the NSE group from baseline to 6 and 12 months (p < 0.01) and in the NSEB group from baseline to 3 and 24 months (p < 0.01) compared to the PPA group (p > 0.82) that showed no change over time. The NSE group improved in kinesiophobia over time from baseline to12 months (p < 0.01) compared to the NSEB (p = 0.052) and the PPA groups (p > 0.74). Anxiety decreased over time from baseline to 12 and 24 months in the NSE group (p > 0.02), but not in the NSEB (p > 0.25) or the PPA (p > 0.50) groups. The PPA had no effect on general disability or any of the measured psychological factors. CONCLUSION: This randomised controlled trial with a 2-year follow-up shows that physiotherapist-led neck-specific exercise with or without the addition of a behavioural approach had superior outcome on general disability and most psychological factors compared to the mere prescription of physical activity.

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