High-Intensity Exercise Improves Fatigue, Sleep, and Mood in Patients With Axial Spondyloarthritis: Secondary Analysis of a Randomized Controlled Trial.
Silje Halvorsen Sveaas, Hanne Dagfinrud, Inger Jorid Berg and 4 others
PMID 32367124WHAT IT FOUND
Three months of high-intensity exercise improved fatigue, vitality, mood, and perceived health in patients with axial spondyloarthritis.
These benefits disappeared by 12 months, likely because fewer than half continued exercising. The effects were small to moderate and did not reach the threshold for clinically important change.
Key findings
01High-intensity exercise significantly reduced severe fatigue and poor sleep quality at 3 months compared to no intervention.
02Improvements in fatigue, vitality, mood, and perceived health were not sustained at 12-month follow-up.
03The observed effect sizes were generally smaller than the reported Minimal Clinical Important Difference values.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
Participants and therapists were not blinded, which introduces risk of bias because all outcomes were self-reported. All outcomes analyzed were secondary; the primary outcomes of the parent trial were disease activity measures. Effect sizes were smaller than the Minimal Clinical Important Difference, meaning the statistical significance may not reflect a change patients notice in daily life. The study did not provide follow-up or monitoring after the 3-month intervention, so long-term adherence and its impact could not be assessed.
Declared interests
The study was funded by the Norwegian Fund for Post-Graduate Training in Physiotherapy. The funder had no role in the design, conduct, or reporting of the study.
The easy way to misread this
Do not assume that a three-month course of high-intensity exercise provides lasting relief from fatigue or sleep problems. The benefits disappeared by 12 months, coinciding with a drop in exercise adherence, and the effect sizes were below the threshold typically considered clinically important.