CLINICAL RESEARCH POSTER PRESENTATION ABSTRACTS
Please note: All posters will be displayed in
Salons 10-12.
THURSDAY, 10:15-11:00 AM
Taylor AG, Bourguignon C.
Effects of static magnetic fields and negative affect
on pain and functional status in persons with fibromyalgia.
University of Virginia agt@virginia.edu
PURPOSE: This study investigated the effects
of two types of static magnetic field sleep pads and negative affect
on pain perception and functional status in persons with fibromyalgia.
METHODS: Six-month trial, with randomization
to treatment groups (Functional Pad A, Functional Pad B, Sham Pad, and
Usual Care Alone). Outcomes: functional status, pain intensity ratings,
tender point pain intensity score, and negative affect. A median split
was done on negative affect scores to form low and high negative affect
groups.
RESULTS: After controlling for pain intensity
ratings at baseline, negative affect groups and treatment groups differed
significantly on pain intensity at 6 months. Those in the low negative
affect group reported lower pain intensity at 6 months than the high
negative affect group. The Functional Pad A group reported lower pain
intensity at 6 months compared to the usual care group. Although the
interaction between negative affect and treatment groups was not statistically
significant, the Functional Pad A group had clinically important reductions
in pain intensity at 6 months in both the high and low negative affect
groups, unlike the sham and usual care alone groups. After controlling
for baseline ratings, clinically important reductions in tender point
intensity at 6 months were found in both Functional Pad A and Functional
Pad B groups compared to usual care alone or sham groups, although these
reductions were not statistically significant. The Functional Pad A
and Functional Pad B groups exhibited clinically important improvements
in tender point intensity ratings at 6 months in both the high and low
negative affect groups. After controlling for functional status at baseline,
those in the high negative affect group reported lower levels of functional
status at 6 months than the low negative affect group. Functional status
at 6 months did not differ depending upon treatment group assignment.
CONCLUSIONS: Functional Pad A and the low negative
affect groups reported significantly lower pain intensity at 6 months
compared to usual care alone or high negative affect group, respectively.
Tender point intensity did not differ. Functional status was lower in
the high negative affect group.
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