Pain. 2012 Feb 14. [Epub ahead of print]
Effects of strength vs aerobic exercise on pain severity in adults
with fibromyalgia: A randomized equivalence trial.
Hooten WM, Qu W, Townsend CO, Judd JW.
Department of Anesthesiology, Mayo Clinic College of Medicine,
Rochester, MN, USA; Department of Psychiatry and Psychology, Mayo
Clinic College of Medicine, Rochester, MN, USA.
Abstract
Strength training and aerobic exercise have beneficial effects on pain
in adults with fibromyalgia. However, the equivalence of strengthening
and aerobic exercise has not been reported.
The primary aim of this randomized equivalence trial involving
patients with fibromyalgia admitted to an interdisciplinary pain
treatment program was to test the hypothesis that strengthening (n=3D36)
and aerobic (n=3D36) exercise have equivalent effects (95% confidence
interval within an equivalence margin =C2=B18) on pain, as measured by the
pain severity subscale of the Multidimensional Pain Inventory.
Secondary aims included determining the effects of strengthening and
aerobic exercise on peak Vo(2) uptake, leg strength, and pressure pain
thresholds.
In an intent-to-treat analysis, the mean (=C2=B1 standard deviation) pain
severity scores for the strength and aerobic groups at study
completion were 34.4=C2=B111.5 and 37.6=C2=B111.9, respectively. The group
difference was -3.2 (95% confidence interval, -8.7 to 2.3), which was
within the equivalence margin of =CE=948.
Significant improvements in pain severity (P<.001), peak Vo(2)
(P<.001), strength (P<.001), and pain thresholds (P<.001) were
observed from baseline to week 3 in the intent-to-treat analysis;
however, patients in the aerobic group (mean change 2.0=C2=B12.6mL/kg/min)
experienced greater gains (P<.013) in peak Vo(2) compared to the
strength group (mean change 0.4=C2=B12.6mL/kg/min).
Knowledge of the equivalence and physiological effects of exercise
have important clinical implications that could allow practitioners to
target exercise recommendations on the basis of comorbid medical
conditions or patient preference for a particular type of exercise.
This study found that strength and aerobic exercise had equivalent
effects on reducing pain severity among patients with fibromyalgia.
Copyright =C3=82=C2=A9 2012 International Association for the Study of Pain=
.
Published by Elsevier B.V. All rights reserved.
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