The Effectiveness of Acceptance and Commitment Therapy on Pain Perception, Post-Traumatic Stress Disorder, and Emotional Inhibition in Patients with Chronic Low Back Pain

Document Type : Original Research

Authors
1 M.A. in General Psychology, Imam Khomeini International University, Qazvin, Iran
2 M.A. in Clinical Psychology, Islamic Azad University, Roudehen Branch, Roudehen, Iran
3 M.A. in General Psychology, Payame Noor University, Gorgan Branch, Gorgan, Iran
4 M.A. in General Psychology, Islamic Azad University, Sari Branch, Sari, Iran
5 M.A. in Personality Psychology, Islamic Azad University, South Tehran Branch, Tehran, Iran
Abstract
Aims: Psychological and emotional consequences of chronic low back pain (CLBP) often include anxiety, depression, emotional distress, and reduced quality of life, which can further exacerbate the perception of pain. This study aimed to evaluate the effectiveness of Acceptance and Commitment Therapy (ACT) on pain perception, post-traumatic stress disorder (PTSD), and emotional inhibition in patients with CLBP.

Method and Materials: The study utilized a quasi-experimental pre-test/post-test design with a control group involving 36 patients with CLBP from clinics in Qazvin in 2024. Participants were purposively selected and randomly assigned to either the intervention group (n=18) or the control group (n=18). The intervention group participated in eight 90-minute sessions of ACT, while the control group received no intervention. Data were collected using the McGill Pain Questionnaire, the Post-Traumatic Stress Disorder Scale, and the Emotional Inhibition Scale. The data were analyzed using MANCOVA in SPSS-27.

Findings: The results demonstrated that ACT significantly decreases pain perception (F=68.67), PTSD (F=21.39), verbal inhibition (F=64.86), timidity (F=66.08), disguise of feelings (F=67.81), and self-control (F=55.23) in individuals with CLBP (P< 0.001).

Conclusion: This study demonstrates that ACT not only alleviates the physical experience of CLBP but also effectively addresses the psychological barriers, such as PTSD and emotional inhibition, that amplify the condition. By fostering psychological flexibility, ACT offers a holistic approach to improving both the emotional well-being and pain management of CLBP patients.

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1. Nicol V, Verdaguer C, Daste C, Bisseriex H, Lapeyre É, Lefèvre-Colau MM, Rannou F, Rören A, Facione J, Nguyen C. Chronic low back pain: a narrative review of recent international guidelines for diagnosis and conservative treatment. Journal of Clinical Medicine. 2023;12(4):1685.
2. Wong CK, Mak RY, Kwok TS, Tsang JS, Leung MY, Funabashi M, Macedo LG, Dennett L, Wong AY. Prevalence, incidence, and factors associated with non-specific chronic low back pain in community-dwelling older adults aged 60 years and older: a systematic review and meta-analysis. The journal of pain. 2022;23(4):509-34.
3. Hayden JA, Ellis J, Ogilvie R, Stewart SA, Bagg MK, Stanojevic S, Yamato TP, Saragiotto BT. Some types of exercise are more effective than others in people with chronic low back pain: a network meta-analysis. Journal of physiotherapy. 2021;67(4):252-62.
4. Sheykhangafshe FB, Tajbakhsh K, Savabi Niri V, Nakhostin Asef Z, Fathi-Ashtiani A. The efficacy of cognitive-behavioral therapy on psychological distress and coping strategies of employees with chronic low back pain. Iranian Journal of Health Sciences. 2023;11(2):93-102.
5. Agnus Tom A, Rajkumar E, John R, Joshua George A. Determinants of quality of life in individuals with chronic low back pain: a systematic review. Health Psychology and Behavioral Medicine. 2022;10(1):124-44.
6. Fernández-Rodríguez R, Álvarez-Bueno C, Cavero-Redondo I, Torres-Costoso A, Pozuelo-Carrascosa DP, Reina-Gutiérrez S, Pascual-Morena C, Martínez-Vizcaíno V. Best exercise options for reducing pain and disability in adults with chronic low back pain: Pilates, strength, core-based, and mind-body. A network meta-analysis. Journal of orthopaedic & sports physical therapy. 2022;52(8):505-21.
7. Venezia A, Fawsitt‐Jones H, Hohenschurz‐Schmidt D, Mancini M, Howard M, Makovac E. Investigating the effects of artificial baroreflex stimulation on pain perception: A comparative study in no‐pain and chronic low back pain individuals. The Journal of Physiology. 2024;602(24):6941-57.
8. Blanco-Giménez P, Vicente-Mampel J, Gargallo P, Maroto-Izquierdo S, Martín-Ruíz J, Jaenada-Carrilero E, Barrios C. Effect of exercise and manual therapy or kinesiotaping on sEMG and pain perception in chronic low back pain: a randomized trial. BMC Musculoskeletal Disorders. 2024;25(1):583.
9. Masroor S, Tanwar T, Aldabbas M, Iram I, Veqar Z. Effect of adding diaphragmatic breathing exercises to Core Stabilization Exercises on Pain, muscle activity, disability, and Sleep Quality in patients with chronic low back Pain: a Randomized Control Trial. Journal of chiropractic medicine. 2023;22(4):275-83.
10. Tavares JM, Rodacki AL, Hoflinger F, dos Santos Cabral A, Paulo AC, Rodacki CL. Physical performance, anthropometrics and functional characteristics influence the intensity of nonspecific chronic low back pain in military police officers. International Journal of Environmental Research and Public Health. 2020;17(17):6434.
11. Varallo G, Scarpina F, Giusti EM, Cattivelli R, Guerrini Usubini A, Capodaglio P, Castelnuovo G. Does kinesiophobia mediate the relationship between pain intensity and disability in individuals with chronic low-back pain and obesity?. Brain sciences. 2021;11(6):684.
12. Alcon CA, Wang-Price S. Non-invasive brain stimulation and pain neuroscience education in the cognitive-affective treatment of chronic low back pain: evidence and future directions. Frontiers in Pain Research. 2022;3:959609.
13. Benedict TM, Keenan PG, Nitz AJ, Moeller-Bertram T. Post-traumatic stress disorder symptoms contribute to worse pain and health outcomes in veterans with PTSD compared to those without: a systematic review with meta-analysis. Military medicine. 2020;185(9-10):e1481-91.
14. Unseld M, Zeilinger EL, Fellinger M, Lubowitzki S, Krammer K, Nader IW, Hafner M, Kitta A, Adamidis F, Masel EK, Preusser M. Prevalence of pain and its association with symptoms of post‐traumatic stress disorder, depression, anxiety and distress in 846 cancer patients: a cross sectional study. Psycho‐Oncology. 2021;30(4):504-10.
15. Knibbe W, Lobbezoo F, Voorendonk EM, Visscher CM, de Jongh A. Prevalence of painful temporomandibular disorders, awake bruxism and sleep bruxism among patients with severe post‐traumatic stress disorder. Journal of oral rehabilitation. 2022;49(11):1031-40.
16. Sager ZS, Wachen JS, Naik AD, Moye J. Post-traumatic stress disorder symptoms from multiple stressors predict chronic pain in cancer survivors. Journal of palliative medicine. 2020;23(9):1191-7.
17. Hadlandsmyth K, Driscoll MA, Johnson NL, Mares JG, Mengeling MA, Thomas EB, Norman SB, Lund BC. Veterans with chronic pain: Examining gender differences in pain type, overlap, and the impact of post‐traumatic stress disorder. European Journal of Pain. 2024;28(8):1311-9.
18. Freeman J, Salberg S, Noel M, Mychasiuk R. Examining the epigenetic transmission of risk for chronic pain associated with paternal post-traumatic stress disorder: a focus on veteran populations. Translational Psychiatry. 2025;15(1):42.
19. Amaro-Diaz L, Montoro CI, Fischer-Jbali LR, Galvez-Sanchez CM. Chronic pain and emotional stroop: a systematic review. Journal of clinical medicine. 2022;11(12):3259.
20. Zhu K, Guo Z, Zhang Y, Li S, Wang X, Xu R, Duan P. Latent profile analysis of emotional inhibition in older adults with gastrointestinal tumors: A cross-sectional study. Asia-Pacific Journal of Oncology Nursing. 2025:100677.
21. Liu XG. Normalization of neuroinflammation: a new strategy for treatment of persistent pain and memory/emotional deficits in chronic pain. Journal of Inflammation Research. 2022:5201-33.
22. Zhuo M. Long-term cortical synaptic changes contribute to chronic pain and emotional disorders. Neuroscience Letters. 2019;702:66-70.
23. Li XH, Matsuura T, Xue M, Chen QY, Liu RH, Lu JS, Shi W, Fan K, Zhou Z, Miao Z, Yang J. Oxytocin in the anterior cingulate cortex attenuates neuropathic pain and emotional anxiety by inhibiting presynaptic long-term potentiation. Cell reports. 2021;36(3).
24. Li M, She K, Zhu P, Li Z, Liu J, Luo F, Ye Y. Chronic Pain and Comorbid Emotional Disorders: Neural Circuitry and Neuroimmunity Pathways. International Journal of Molecular Sciences. 2025;26(2):436.
25. Galea Holmes MN, Wileman V, Hassan S, Denning J, Critchley D, Norton S, McCracken LM, Godfrey E. Physiotherapy informed by Acceptance and Commitment Therapy for chronic low back pain: A mixed‐methods treatment fidelity evaluation. British Journal of Health Psychology. 2022;27(3):935-55.
26. Godfrey E, Wileman V, Holmes MG, McCracken LM, Norton S, Moss-Morris R, Noonan S, Barcellona M, Critchley D. Physical therapy informed by acceptance and commitment therapy (PACT) versus usual care physical therapy for adults with chronic low back pain: a randomized controlled trial. The Journal of Pain. 2020;21(1-2):71-81.
27. Feliu-Soler A, Montesinos F, Gutiérrez-Martínez O, Scott W, McCracken LM, Luciano JV. Current status of acceptance and commitment therapy for chronic pain: a narrative review. Journal of pain research. 2018:2145-59.
28. Ma TW, Yuen AS, Yang Z. The efficacy of acceptance and commitment therapy for chronic pain: a systematic review and meta-analysis. The Clinical journal of pain. 2023;39(3):147-57.
29. Du S, Dong J, Jin S, Zhang H, Zhang Y. Acceptance and Commitment Therapy for chronic pain on functioning: A systematic review of randomized controlled trials. Neuroscience & Biobehavioral Reviews. 2021;131:59-76.
30. Moens M, Jansen J, De Smedt A, Roulaud M, Billot M, Laton J, Rigoard P, Goudman L. Acceptance and commitment therapy to increase resilience in chronic pain patients: a clinical guideline. Medicina. 2022;58(4):499.
31. Trindade IA, Guiomar R, Carvalho SA, Duarte J, Lapa T, Menezes P, Nogueira MR, Patrão B, Pinto-Gouveia J, Castilho P. Efficacy of online-based acceptance and commitment therapy for chronic pain: a systematic review and meta-analysis. The journal of pain. 2021;22(11):1328-42.
32. Lai L, Liu Y, McCracken LM, Li Y, Ren Z. The efficacy of acceptance and commitment therapy for chronic pain: A three-level meta-analysis and a trial sequential analysis of randomized controlled trials. Behaviour Research and Therapy. 2023;165:104308.
33. Du S, Dong J, Jin S, Zhang H, Zhang Y. Acceptance and commitment therapy for chronic pain conditions on functioning: A systematic review protocol. Journal of advanced nursing. 2021;77(1):417-26.
34. Liu JQ, Mak WY, Tang AL, Kwan CY, Zoubi FA, Wong TK, Tsang GS, Kwong HC, Lai SW, Sze SP, Hui KT. Effects of Acceptance and Commitment Therapy plus Exercise for Older Adults with Chronic Low Back Pain: A Preliminary Cluster Randomized Controlled Trial with Qualitative Interviews. The Journal of Pain. 2025:105350.
35. Casey MB, Cotter N, Kelly C, Mc Elchar L, Dunne C, Neary R, Lowry D, Hearty C, Doody C. Exercise and acceptance and commitment therapy for chronic pain: a case series with one‐year follow‐up. Musculoskeletal Care. 2020;18(1):64-73.
36. Melzack R. The short-form McGill Pain Questionnaire. Pain. 1987;30(2):191-197.
37. Bagheri Sheykhangafshe F, Farahani H, Dehghani M, Fathi-Ashtiani A. Examining Alexithymia and Post-Traumatic Stress Disorder across Different Levels of Chronic Pain in Patients. IJMPP 2024; 9 (2) :1026-1033.
38. Keane TM, Caddell JM, Taylor KL. Mississippi Scale for Combat-Related Posttraumatic Stress Disorder: three studies in reliability and validity. Journal of consulting and clinical psychology. 1988;56(1):85.
39. Goodarzi MA. Evaluating reliability and validity of the Mississippi scale for post-traumatic stress disorder in Shiraz. Journal of Psychology. 2003;7(3):153-78.
40. Kellner R. Abridged Manual of the Emotional Inhibition Scale. Albuquerque: University of New Mexico; 1986.
41. Hayes SC, Strosahl KD, Wilson KG. Acceptance and commitment therapy: The process and practice of mindful change. Guilford Press; 2011.