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Poor Sleep Quality Linked To Increased Pain And Reduced Activity In Fibromyalgia

Sunday 8 March 2015

 

From ProHealth:

 

Pillow
 

Poor Sleep Quality Linked to Increased Pain and Reduced Activity in Fibromyalgia

By D.J. Kothari, et al.
www.ProHealth.com
March 4, 2015

Editor's comment: Positive affect refers to the extent to which an individual subjectively experiences positive moods such as joy, interest, and alertness. In this study, the authors suggest that boosting positive affect following a poor night's sleep might potentially help improve fibromyalgia patients' activity levels later in the day.

Positive affect and pain: mediators of the within-day relation linking sleep quality to activity interference in fibromyalgia.

Abstract:

Fibromyalgia (FM) is a chronic pain condition often resulting in functional impairments. Nonrestorative sleep is a prominent symptom of FM that is related to disability, but the day-to-day mechanisms relating the prior night's sleep quality to next-day reports of disability have not been examined.

This study examined the within-day relations among early-morning reports of sleep quality last night, late-morning reports of pain and positive and negative affect, and end-of-day reports of activity interference. Specifically, we tested whether pain, positive affect, and negative affect mediated the association between sleep quality and subsequent activity interference.

Data were drawn from electronic diary reports collected from 220 patients with FM for 21 consecutive days. The direct and mediated effects at the within-person level were estimated with multilevel structural equation modeling.

Results showed that pain and positive affect mediated the relation between sleep quality and activity interference. Early-morning reports of poor sleep quality last night predicted elevated levels of pain and lower levels of positive affect at late-morning, which, in turn, predicted elevated end-of-day activity interference. Of note, positive affect was a stronger mediator than pain and negative affect was not a significant mediator.

In summary, the findings identify 2 parallel mechanisms, pain and positive affect, through which the prior night's sleep quality predicts disability the next day in patients with FM. Furthermore, results highlight the potential utility of boosting positive affect after a poor night's sleep as one means of preserving daily function in FM.

Source: Pain, March 2015. By Kothari DJ, Davis MC, Yeung EW and Tennen HA. Department of Psychology, Arizona State University, Tempe, AZ, USA bDepartment of Community Medicine and Health Care, University of Connecticut Health Center, Farmington, CT, USA.

 

The above originally appeared here.

 


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