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|Effects of cognitive-behavioral therapy for insomnia on polysomnographic parameters in fibromyalgia patients|
|Sanchez A, Diaz-Piedra C, Miro E, Martinez MP, Galvez R, Buela-Casal G|
|International Journal of Clinical and Health Psychology 2012;12(1):39-53|
|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*|
This study aimed to evaluate the efficacy of cognitive-behavioral therapy for insomnia (CBT-I) on polysomnographic parameters in patients with fibromyalgia (FM). Twenty-six women with FM participated in the study and were randomly assigned to a CBT-I (n = 13) group or sleep hygiene (SH) condition (n = 13). The evaluation consisted in two interview sessions and domiciliary polysomnography study before and after treatment. The results show that time-in-bed and wake percentage diminish after CBT-I. Improvements were also observed in sleep efficiency, which was close to normal levels. The percentage of NREM stage 1 sleep decreased and NREM stages 3 sleep and 4 increased. Similarly, light sleep (stages 1 and 2) diminished and deep sleep increased (stages 3 and 4) after CBT-I. No improvements were observed in any of these parameters in the individuals undergoing SH therapy. This randomized controlled trial provides new evidence that the use of CBT-I in FM patients can significantly improve objective sleep parameters.