International FItness Scale (IFIS): Construct Validity and Reliability in Women With Fibromyalgia: The al-Ándalus Project

Archives of Physical Medicine and Rehabilitation
Inmaculada C Álvarez-GallardoFrancisco B Ortega

Abstract

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. Cross-sectional study. Fibromyalgia patient support groups. Women with fibromyalgia (n=413) and healthy women (controls) (n=195) for validity purposes and women with fibromyalgia (n=101) for the reliability study. The total sample was N=709. Not applicable. 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. 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 κ, was .45. 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.

References

Nov 3, 1989·JAMA : the Journal of the American Medical Association·S N BlairL W Gibbons
Jan 1, 1995·Arthritis and Rheumatism·F WolfeL Hebert
Feb 13, 2001·BMJ : British Medical Journal·J A Sterne, G Davey Smith
Nov 6, 2004·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·David B ReubenJack M Guralnik
Sep 27, 2005·Scandinavian Journal of Medicine & Science in Sports·L MikkelssonH Nupponen
Jan 31, 2006·Archives of Physical Medicine and Rehabilitation·Kaisa MannerkorpiCatharina Broberg
May 17, 2006·Journal of Long-term Effects of Medical Implants·Robert P WilderRichard F Edlich
May 25, 2006·Clinical Rehabilitation·Caroline M StrettonCraig S Anderson
Oct 24, 2006·Clinical Nursing Research·Margaret Mui Cunningham, Carol Jillings
Jul 3, 2007·Best Practice & Research. Clinical Rheumatology·John McBeth, Kelly Jones
Oct 26, 2007·International Journal of Sports Medicine·H ValkeinenK Häkkinen
Jan 24, 2008·Health and Quality of Life Outcomes·Jeanine A VerbuntRob J E M Smeets
Mar 18, 2008·The Journal of Hand Surgery·Vanesa España-RomeroJonatan R Ruiz
Jul 4, 2008·BMJ : British Medical Journal·Jonatan R RuizSteven N Blair
Aug 30, 2008·Women's Health Issues : Official Publication of the Jacobs Institute of Women's Health·Jessie JonesDaniel S Rooks
Jan 7, 2009·Journal of Clinical Rheumatology : Practical Reports on Rheumatic & Musculoskeletal Diseases·Kim D JonesRobert M Bennett
May 25, 2010·Pain Practice : the Official Journal of World Institute of Pain·Stuart L SilvermanJack Mardekian
Jul 2, 2010·The Journal of Pain : Official Journal of the American Pain Society·Akiko OkifujiDennis C Turk
Dec 29, 2010·Archives of Physical Medicine and Rehabilitation·Virginia A AparicioManuel Delgado-Fernandez
Mar 29, 2011·International Journal of Epidemiology·Francisco B OrtegaUNKNOWN HELENA study group
Nov 19, 2011·Scandinavian Journal of Medicine & Science in Sports·V A AparicioF B Ortega
Mar 16, 2012·Scandinavian Journal of Medicine & Science in Sports·F B OrtegaV Martínez-Vizcaino
Nov 22, 2012·BMJ : British Medical Journal·Francisco B OrtegaFinn Rasmussen
Feb 16, 2013·Perceptual and Motor Skills·Elizabeth Weening-DijksterhuisCees P van der Schans
May 17, 2013·Journal of Physical Activity & Health·NiCole R KeithChristopher M Callahan
Jun 27, 2013·Current Pain and Headache Reports·Luiz Paulo Queiroz
Dec 10, 2013·Pain Management Nursing : Official Journal of the American Society of Pain Management Nurses·V A AparicioM Delgado-Fernández
Feb 26, 2014·BMJ : British Medical Journal·Anisur RahmanDawn Carnes
Apr 17, 2014·JAMA : the Journal of the American Medical Association·Deborah Tolmach Sugerman
May 17, 2014·Practical Neurology·Guy Leschziner
Jun 20, 2014·Scandinavian Journal of Medicine & Science in Sports·M Sánchez-LópezF B Ortega
Aug 7, 2014·Journal of Rehabilitation Medicine·Kirstine AmrisBente Danneskiold-Samsøe
Oct 21, 2014·International Journal of Sports Medicine·A Carbonell-BaezaV A Aparicio

❮ Previous
Next ❯

Citations

Oct 3, 2017·Rheumatology·Fernando Estévez-LópezManuel Delgado-Fernández
Jan 25, 2020·International Journal of Environmental Research and Public Health·Jorge Carlos-VivasJosé Carmelo Adsuar
Oct 28, 2019·Scandinavian Journal of Medicine & Science in Sports·Lidia Romero-GallardoVirginia Ariadna Aparicio
Nov 18, 2018·Research in Nursing & Health·Mariana Ortiz-PiñaPatrocinio Ariza-Vega
Apr 2, 2019·Scandinavian Journal of Medicine & Science in Sports·Nuria Marín-JiménezVirginia A Aparicio
Jul 30, 2020·Einstein·Débora de Almeida PereiraRicardo de Freitas-Dias
Jan 29, 2021·International Journal of Environmental Research and Public Health·Miguel MadrugaDavid Conde-Caballero
Apr 4, 2021·International Journal of Environmental Research and Public Health·Nuria Marín-JiménezVirginia A Aparicio
May 8, 2021·Joint, Bone, Spine : Revue Du Rhumatisme·Etienne Masquelier, Jacques D'haeyere

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.