Article

OBJECTIVE: To compare the levels of physical activity (PA) assessed with
questionnaires (Leisure Time Physical Activity Instrument [LTPAI], Physical
Activity at Home and Work Instrument [PAHWI]) and accelerometry in patients with
fibromyalgia; and to analyze the test-retest reliability of these questionnaires.
DESIGN: Cross-sectional study. SETTING: Local fibromyalgia association.
PARTICIPANTS: Participants (N=99; 5 men) with fibromyalgia with a mean age of
50.2+/-9.5 years. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES:
Participants carried an accelerometer for 1 week and completed the LTPAI and
PAHWI twice (separated by a 1-wk interval). The LTPAI and PAHWI were summed to
obtain overall values of PA. RESULTS: Time spent in total, moderate, and
moderate-vigorous PA was higher (P<.01) when assessed by the LTPAI and PAHWI
compared with accelerometry. The Bland-Altman method showed an absence of
agreement between the LTPAI and PAHWI and the accelerometer for moderate,
moderate-vigorous, and total PA. The test-retest reliability for the workplace
subscale and total score of the PAHWI showed high and moderate intraclass
correlation coefficients (ICCs), respectively, but also manifested high SE of
measurements (up to 179min/d). The LTPAI showed low to moderate ICCs and high SE
of measurements (up to 79min/d). For the LTPAI and PAHWI, the ICCs for total
activity across the population were low to moderate, and the Bland-Altman method
confirmed this lack of agreement. CONCLUSIONS: The LTPAI and PAHWI and the
accelerometer differ greatly when assessing PA. Furthermore, the LTPAI and PAHWI
did not show good levels of test-retest reliability. Therefore, the
self-administered LTPAI and PAHWI show questionable usefulness to assess PA in
populations with fibromyalgia.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS