Abstract
Fibromyalgia is a condition marked by widespread chronic pain and psychological symptoms. The primary objective of this study was to examine the day-to-day association between physical activity and pain intensity among a sample of women with fibromyalgia (FM) and the potential moderation of this association by pain catastrophizing. In this micro-longitudinal daily diary study, FM patients (N =80) completed questionnaires assessing pain (Brief Pain Inventory) and psychosocial functioning (PROMIS-anxiety, depression) and were then asked to report their levels of pain catastrophizing (e.g negative cognitions on pain), physical activity and pain intensity once per day for a period of seven days using an electronic diary. Multilevel modeling analyses indicated that association between physical activity and pain intensity was moderated by catastrophizing (B = -0.05 SE = 0.023, p
Highlights
Fibromyalgia (FM) is a condition marked by widespread chronic pain and psychological symptoms
Moderation analyses indicated that association between physical activity and pain intensity was moderated by catastrophizing (B = .003, SE = .001, p < .05), with patients scoring higher in daily catastrophizing showing a relatively stronger link between lower day-to-day physical activity and increased daily FM pain
Significant associations were observed between pain catastrophizing, pain intensity and Fitbit Flex step count (p < .05)
Summary
Fibromyalgia (FM) is a condition marked by widespread chronic pain and psychological symptoms. Fibromyalgia (FM) is a complex chronic widespread pain disorder including various symptoms such as sleep disturbances, fatigue, difficulty thinking clearly (“fibro fog”), stress, anxiety, and depression [1]. The prevalence of FM in the United States is approximately 6.4 percent and the condition is more common in women [2]. Despite this high prevalence, the etiology of the disorder is still unknown, and the diverse nature of FM symptoms suggests a complex biopsychosocial basis. While exercise has been identified as an important intervention for FM symptom management, patient adherence with recommended exercise regimens is often sub-optimal, presumably due to actual or feared activity-related increases in pain
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