Spondyloarthritis & psoriatic arthritis
Reduced sleep quality is highly prevalent and associated with physical function and cardiorespiratory fitness in patients with axial spondyloarthritis: a cross-sectional study
Authors' conclusion
Reduced sleep quality was common in axSpA patients with moderate to high disease activity. Better sleep quality was associated with better physical function and higher cardiorespiratory fitness. There was no association between sleep quality and spinal mobility.
Study context
- Population
- Patients with axial spondyloarthritis (axSpA) (53% female, mean age 46 years, 72% high disease activity, ASDAS-CRP ≥ 2.1)
- Participants
- 99 patients
- Outcome
- Sleep quality (PSQI, 0-21, 21 = worst) and its associations with physical function, cardiorespiratory fitness and spinal mobility
- Follow-up
- Baseline
Methodological detailsbaseline data from the Exercise for Spondyloarthritis trial, multiple linear regression, separate models
- Baseline data from the Exercise for Spondyloarthritis trial
- Multiple linear regression, separate models
Main finding
As reported in the abstract
Reduced sleep quality
84
85%
Pittsburgh Sleep Quality Index (PSQI) and Ankylosing Spondylitis Performance Index (ASPI), β
0.10 (0.01, 0.19) (95% CI)
PSQI and Bath Ankylosing Spondylitis Functional Index (BASFI), β
0.85 (0.51, 1.20) (95% CI)
PSQI and VO2peak, β (95% CI), inverse association
−0.14
−0.27, −0.01
Observational data: associations, not effects.
Further findings
PSQI components most frequently reported · baseline
- Sleep disturbance
- 65%
- Poor subjective sleep quality
- 53%
- Daytime dysfunction
- 41%
- Increased sleep latency
- 41%
Original publication
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