RT journal article
T1 International fitness scale (IFIS): Construct validity and reliability in women with fibromyalgia: The al-ándalus project
A1 Álvarez Gallardo, Inmaculada Concepción
A1 Soriano Maldonado, Alberto
A1 Segura Jiménez, Víctor
A1 Carbonell Baeza, Ana
A1 Estévez  López, Fernando
A1 McVeigh, Joseph G.
A1 Delgado Fernández, Manuel
A1 Ortega, Francisco Bartolomé
A2 Didáctica de la Educación FísicaPlástica y Musical
K1 Chronic pain
K1 Fibromyalgia
K1 Muscle strength
K1 Physical fitness
K1 Rehabilitation
K1 Self-assessment
AB Objectives: To examine the construct validity of the International FItness Scale (IFIS) (ie, self-reported fitness) against objectively measured physical fitness in women with fibromyalgia and in healthy women; and to study the test-retest reliability of the IFIS in women with fibromyalgia. Design: Cross-sectional study.Setting: Fibromyalgia patient support groups.Participants: Women with fibromyalgia (nZ413) and healthy women (controls) (nZ195) for validity purposes and women with fibromyalgia (nZ101) for the reliability study. The total sample was N=709.Interventions: Not applicable.Main Outcome Measures: Fitness level was both self-reported (IFIS) and measured using performance-based fitness tests. For the reliability study the IFIS was completed on 2 occasions, 1 week apart.Results: Women with fibromyalgia who reported average fitness had better measured fitness than those reporting very poor fitness (all P<.001, except 6-minute walk test where P<.05), with similar trends observed in healthy control women. The test-retest reliability of the IFIS, as measured by the average weighted k, was .45.Conclusions: The IFIS was able to identify women with fibromyalgia who had very low fitness and distinguish them from those with higher fitness levels. Furthermore, the IFIS was moderately reliable in women with fibromyalgia.
PB Elsevier
SN 0003-9993
YR 2016
FD 2016
LK http://hdl.handle.net/10498/30624
UL http://hdl.handle.net/10498/30624
LA eng
NO We acknowledge Elsevier (Publisher) and the Archives of Physical Medicine and Rehabilitation (Journal). Álvarez-Gallardo, I. C., Soriano-Maldonado, A., Segura-Jiménez, V., Carbonell-Baeza, A., Estévez-López, F., McVeigh, J. G., Delgado-Fernández, M., & Ortega, F. B. (2016). International fitness scale (IFIS): Construct validity and reliability in women with fibromyalgia: The al-ándalus project. Archives of Physical Medicine and Rehabilitation, 97(3), 395-404. https://doi.org/10.1016/J.APMR.2015.08.416
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026