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KMID : 0981220200200040445
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Congnitive Behavior Therapy in Korea
2020 Volume.20 No. 4 p.445 ~ p.468
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Group Acceptance and Commitment Therapy for Chronic Pain : The Effects of Process Variables
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Park Ji-Wan
Yu Kyung-Hee
Cho Kang-Hee
Beam Jae-Won
Cho Sung-Kun
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Abstract
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This study was conducted to investigate the effects of a group acceptance and commitment therapy(ACT) intervention for patients with chronic pain in comparison to a control group receiving treatment as usual. We also tried to examine whether pain acceptance and pain catastrophizing mediates the outcome of treatment. A total of 22 patients with chronic pain in a university tertiary rehabilitation center located in Daejeon, Korea were included in the study and randomized to either 8 weekly group sessions of ACT or to a control group receiving treatment as usual(TAU). To assess program effectiveness, pain acceptance, pain catastrophizing, depression, anxiety, physical function and mental function were assessed in the four stages (pre, post and follow-up after 1-3 months). As a result of the study, the ACT group showed significantly less pain catastrophizing and anxiety than the TAU group, and the pain acceptance and mental function level were improved. This treatment effect was maintained after 3 months of program termination, and the effect size varied from small size to large size. In addition, mediation analysis showed that pain catastrophizing mediates changes in anxiety and mental function levels. Pain acceptance did not show any mediating effect. These results suggest that ACT is not only more flexible in coping with persistent unpleasant pain experiences, but also is an effective psychological intervention that can successfully adapt to an individual's life despite pain.
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KEYWORD
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chronic pain, group Acceptance and Commitment Therapy, pain catastrophizing, treatment mechanism hierarchial linear model
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