(1) Wolfe F, Clauw D J, Fitzcharles MA, Goldenberg DL, Katz RS, Mease P, et al. The American College of Rheumatology preliminary diagnostic criteria for fibromyalgia and measurement of symptom severity. Arthritis Care Res. 2010; 62: 600–610. https://doi.org/10.1002/acr.20140
(2) Eilertsen G, Ormstad H, Kirkevold M, Mengshoel AM, Söderberg S, Olsson M. Similarities and differences in the experience of fatigue among people living with fibromyalgia, multiple sclerosis, ankylosing spondylitis and stroke. J Clin Nurs. 2015; 24:13–14. https://doi.org/10.1111/jocn.12774
(3) Humphrey L, Arbuckle R, Mease P, Williams DA, Samsoe BD, Gilbert C. Fatigue in fibromyalgia : a conceptual model informed by patient interviews. BMC Musculoskelet. Disord. 2010; 11: 216–225. https://doi.org/10.1186/1471-2474-11-216
(4) Vincent A, Benzo RP, Whipple MO, Mcallister SJ, Erwin PJ, Saligan LN. Beyond pain in fibromyalgia : insights into the symptom of fatigue. Arthritis Res. Ther. 2013; 15: 221.
(5) Abtroun L, Bunouf P, Gendreau RM, Vitton, O. Is the efficacy of milnacipran in fibromyalgia predictable? A data-mining analysis of baseline and outcome variables. Clin J Pain. 2016; 32: 435–440. https://doi.org/10.1097/AJP.0000000000000284
(6) Crombez G, Eccleston C, Damme SVan, Vlaeyen JW, Karoly. Fear-Avoidance Model of Chronic Pain: the next generation. Clin J Pain. 2012; 28: 475–483. https://doi.org/10.1097/AJP.0b013e3182385392
(7) Estévez-López F, Álvarez-Gallardo IC, Segura-Jiménez V, Soriano-Maldonado A, Borges-Cosic M, Pulido-Martos M, et al. The discordance between subjectively and objectively measured physical function in women with fibromyalgia: association with catastrophizing and self-efficacy cognitions. The al-Ándalus project. Disabil. Rehabil. 2018; 40: 329–337. https://doi.org/10.1080/09638288.2016.1258737
(8) Häuser W, Ablin J, Fitzcharles MA, Littlejohn GO, Luciano JV, Usui C, et al. Fibromyalgia. Nature Reviews. 2015; 1: 1–16. https://doi.org/10.1038/nrdp.2015.22
(9) Peñacoba C, Pastor MÁ, López-Roig S, Sanz Y, Velasco L. Healthcare Provider Advice to Engage in Walking Regimens and Adherence in Women With Fibromyalgia. Rehabilitation Nurs. 2019; 44: 20–28. https://doi.org/https://doi.org/10.1097/rnj.0000000000000103
(10) Santos E Campos AM, Párraga-Montilla JA, Aragón-Vela J, Latorre-román PA. Effects of a functional training program in patients with fibromyalgia : A 9-year prospective longitudinal cohort study. Scand. J. Med. Sci. Sports. 2020; 30: 904–913. https://doi.org/10.1111/sms.13640
(11) Merriwether EN, Frey-Law LA, Rakel BA, Zimmerman MB, Dailey DL, Vance CGT, et al. Physical activity is related to function and fatigue but not pain in women with fibromyalgia: Baseline analyses from the Fibromyalgia Activity Study with TENS (FAST). Arthritis Res. Ther. 2018; 20: 1–13. https://doi.org/10.1186/s13075-018-1671-3
(12) Pulido-Martos M, Luque-Reca O, Segura-Jiménez V, Álvarez-Gallardo IC, Soriano-Maldonado A, Acosta-Manzano P, et al. Physical and psychological paths toward less severe fibromyalgia: A structural equation model. Ann Phys. Rehabil. Med. 2020. 63: 46–52. https://doi.org/10.1016/j.rehab.2019.06.017
(13) López-Roig S, Pastor MÁ, Peñacoba C, Lledó A, Sanz Y, Velasco L. Prevalence and predictors of unsupervised walking and physical activity in a community population of women with fibromyalgia. Rheumatol. Int. 2016; 36: 1127–1133. https://doi.org/10.1007/s00296-016-3508-1
(14) Pastor MÁ, López-Roig S, Lledó A, Peñacoba C, Velasco L, Schweiger-Gallo I, et al. Combining motivational and volitional strategies to promote unsupervised walking in patients with fibromyalgia: Study protocol for a randomized controlled trial. Trials. 2014; 15: 1–15. https://doi.org/10.1186/1745-6215-15-120
(15) Pastor MÁ, López-Roig S, Sanz Y, Peñacoba C, Cigarán M, Velasco L, et al. Walking as physical exercise in Fibromyalgia : An elicitation study from the Theory of Planned Behavior. An. de Psicol. 2015; 31:433–446. https://doi.org/http://dx.doi.org/10.6018/analesps.31.2.172151
(16) Peñacoba C, Pastor MÁ, López-Roig S, Velasco L, Lledó A. Walking Beliefs in Women With Fibromyalgia : Clinical Profile and Impact on Walking Behavior. Clin Nurs Res. 2017; 26: 632–650. https://doi.org/10.1177/1054773816646339
(17) Meulders A. Fear in the context of pain: Lessons learned from 100 years of fear conditioning research. Behav Res Ther. 2020; https://doi.org/10.1016/j.brat.2020.103635
(18) Angarita‐Osorio N, Pérez‐Aranda A, Feliu‐Soler A, Andrés‐Rodríguez L, Borràs X, Suso‐Ribera C, et al. Patients With Fibromyalgia Reporting Severe Pain but Low Impact of the Syndrome: Clinical and Pain‐Related Cognitive Features. Pain Pract. 2020; 20: 255–261. https://doi.org/10.1111/papr.12847
(19) Borg C, Carrier F, Colson D, Laurent B, Michael GA. Brain and Cognition Attentional focus on subjective interoceptive experience in patients with fibromyalgia. Brain and Cognition. 2015; 101: 35–43. https://doi.org/10.1016/j.bandc.2015.10.002
(20) Bucourt E, Martaillé V, Goupille P, Joncker-Vannier I, Huttenberger B, Réveillère C, et al. A Comparative Study of Fibromyalgia, Rheumatoid Arthritis, Spondyloarthritis, and Sjögren’s Syndrome; Impact of the Disease on Quality of Life, Psychological Adjustment, and Use of Coping Strategies. Pain Med. 2019; https://doi.org/10.1093/pm/pnz255
(21) Nijs J, Roussel N, Oosterwijck JVan, Kooning MDe, Ickmans K, Struyf F, et al. Fear of movement and avoidance behaviour toward physical activity in chronic-fatigue syndrome and fibromyalgia : state of the art and implications for clinical practice. Clinical Rheumatology. 2013; 32: 1121–1129. https://doi.org/10.1007/s10067-013-2277-4
(22) Quartana PJ, Campbell CM, Edwards RR. Pain catastrophizing: a critical review. Expert Rev NeurotheR. 2009; 9: 745–758. https://doi.org/10.1586/ern.09.34
(23) Lazaridou A, Koulouris A, Devine JK, Haack M, Jamison, RN, Edwards RR, et al. Impact of daily yoga-based exercise on pain, catastrophizing, and sleep amongst individuals with fibromyalgia. J. Pain Res. 2019; 12: 2915–2923. https://doi.org/10.2147/JPR.S210653
(24) Lukkahatai N, Majors B, Reddy S, Walitt B, Saligan LN. Gene expression profiles of fatigued fibromyalgia patients with different categories of pain and catastrophizing: A preliminary report. Nurs Outlook. 2013;61: 216-224. https://doi.org/10.1016/j.outlook.2013.03.007
(25) Lukkahatai N, Walit B, Espina A, Gelio A, Saligan LN. Understanding the Association of Fatigue With Other Symptoms of Fibromyalgia: Development of a Cluster Model. Arthritis Care Res. 2016;68:99–107. https://doi.org/10.1002/acr.22626
(26) Plazier M, Ost J, Stassijns G, De Ridder D, Vanneste S. Pain characteristics in fibromyalgia: understanding the multiple dimensions of pain. Clin. Rheumatol. 2015;34: 775–783. https://doi.org/10.1007/s10067-014-2736-6
(27) Thompson DP, Antcliff D, Woby SR. Cognitive factors are associated with disability and pain, but not fatigue among physiotherapy attendees with persistent pain and fatigue. Physiotherapy. 2020;106: 94–100. https://doi.org/10.1016/j.physio.2019.01.006
(28) Suso-Ribera C, García-Palacios A, Botella C, Ribera-Canudas MV. Pain catastrophizing and its relationship with health outcomes: Does pain intensity matter? Pain Res Manag. 2017; https://doi.org/10.1155/2017/9762864
(29) McCracken LM. Models, action and progress in psychology and chronic pain. Eur J Pain. 2017; 21: 1299–1300. https://doi.org/10.1002/ejp.1080
(30) Wolfe F, Smythe HA, Yunus MB, Bennett RM, Bombardier C, Goldenberg DL, et al. (1990). The american college of rheumatology 1990 criteria for the classification of fibromyalgia. Arthritis Rheumatol, 1990;33:160–172. https://doi.org/10.1002/art.1780330203
(31) Munguía-Izquierdo D, Segura-Jiménez V, Camiletti-Moirón D, Pulido-Martos M, Alvarez-Gallardo IC, Romero A, et al. Multidimensional Fatigue Inventory : Spanish adaptation and psychometric properties for fibromyalgia patients . The Al-Andalus study. Clin. exp. rheumatol. 2012; 30: 94–102.
(32) García-Campayo J, Rodero B, Alda M, Sobradiel N, Montero J, Moreno S. Validación de la versión española de la escala de la catastrofización ante el dolor (Pain Catastrophizing Scale) en la fibromialgia. Med Clin (Barc). 2008; 131: 487–492.
(33)Gusi N, Parraca J, Adsuar J, Olivares P. Ejercicio físico y Fibromialgia. In: Penacho A, Rivera J, Pastor MA, Gusi N, editors. Guía de ejercicios físicos para personas con Fibromialgia. Vitoria-Gasteiz: Asociación Divulgación Fibromialgia; 2009. p. 39–56. https://www.fibro.info/guiaejercicios.pdf
(34) Busch AJ, Schachter CL, Overend TJ, Peloso PM, Barber KAR. Exercise for fibromyalgia: a systematic review. J. Rheumatol. 2008; 35:1130–1144. http://www.ncbi.nlm.nih.gov/pubmed/18464301
(35)O’Connor SR, Tully MA, Ryan B, Bleakley CM, Baxter GD, Bradley JM, et al. Walking Exercise for Chronic Musculoskeletal Pain: Systematic Review and Meta-Analysis. Arch Phys Med Rehabil. 2015; 96: 724-734.e3. https://doi.org/10.1016/j.apmr.2014.12.003
(36) Hayes AF. Introduction to Mediation, Moderation, and Conditional Process Analysis. A Regression-Based Approach. In: Little TD, editor. New York: Guildford Press;2017.
(37) Sánchez AI, Martínez MP, Miró E, Medina A. Predictors of the Pain Perception and Self-Efficacy for Pain Control in Patients with Fibromyalgia. Span J Psychol. 2011;14:366–373. https://doi.org/10.5209/rev_SJOP.2011.v14.n1.33
(38) Rodero B, Casanueva B, García-Campayo J, Roca M, Magallán R, Lápez Del Hoyo Y. Stages of chronicity in fibromyalgia and pain catastrophising: A cross-sectional study. BMC. Musculoskelet. Disord. 2010;11: 251. https://doi.org/10.1186/1471-2474-11-251
(39) Santana EF, Tavares JSC. Helplessness scheme in a patient with chronic pain and depressive symptoms. Psicol Estud. 2015;20:331–338. https://doi.org/10.4025/psicolestud.v20i2.24056
(40) Fernández M. The relationship of perceived pain with conscious and unconscious coping and depression among fibromyalgia patients. Diss. abstr., B, Sci. eng. 2012;72:6382. search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2012-99080-214&site=ehost-live&scope=site.
(41) Galvez-Sánchez CM, Reyes del Paso GA, Duschek S. Cognitive impairments in Fibromyalgia syndrome: Associations with positive and negative affect, alexithymia, pain catastrophizing and self-esteem. Front. Psychol. 2018;9(MAR). https://doi.org/10.3389/fpsyg.2018.00377
(42) Estévez-López F, Segura-Jiménez V, Álvarez-Gallardo IC, Borges-Cosic M, Pulido-Martos M, Carbonell-Baeza A, et al. Adaptation profiles comprising objective and subjective measures in fibromyalgia: the al-Ándalus project. Rheumatology (Oxford). 2017;56: 2015–2024. https://doi.org/10.1093/rheumatology/kex302
(43) Adachi T, Nakae A, Maruo T, Shi K, Maeda, L., Saitoh, et al. The Relationships Between Pain-Catastrophizing Subcomponents and Multiple Pain-Related Outcomes in Japanese Outpatients with Chronic Pain: A Cross-Sectional Study. Pain Pract. 2019; 19: 27–36. https://doi.org/10.1111/papr.12712
(44) McCracken LM, Morley S. The Psychological Flexibility Model: A Basis for Integration and Progress in Psychological Approaches to Chronic Pain Management. J Pain. 2014; 15: 221–234. https://doi.org/10.1016/j.jpain.2013.10.014
(45) Vlaeyen JWS, Crombez G (2020). Behavioral Conceptualization and Treatment of Chronic Pain. Annu. Rev.Psychol. 2020;16: 187–212. https://doi.org/10.1146/annurev-clinpsy-050718-095744
(46) Sturgeon JA, Zautra AJ, Arewasikporn A. A multilevel structural equation modeling analysis of vulnerabilities and resilience resources influencing affective adaptation to chronic pain. Pain. 2014; 155: 292–298. https://doi.org/10.1016/j.pain.2013.10.007
(47) Zafra-Polo MT, Pastor MÁ, López-Roig S. Autoeficacia, catastrofismo, miedo al movimiento y resultados de salud en la Fibromialgia. An. De Psicol. 2014; 30: 104–113. https://doi.org/10.6018/analesps.30.1.151541
(48) Comeche Moreno IM, Fernández AM, De la Fe Rodríguez M, Pardo JO, Díaz García MI, Vallejo Pareja MÁ. Group Cognitive-Behavioral Therapy Protocol for Fibromyalgia Patients. Clínica y Salud. 2010;21:107–121. https://doi.org/10.5093/cl2010v21n2a1
(49) Pastor-Mira MA, López-Roig S, Martínez-Zaragoza F, Lledó A, Velasco L, León E, et al. Promoting unsupervised walking in women with fibromyalgia: a randomized controlled trial. Psychol Health Med. 2020: 1–12. https://doi.org/10.1080/13548506.2020.1774068