The Pittsburgh Fatigability Scale for Older Adults: Development and Validation

Objectives To describe the development of the Pittsburgh Fatigability Scale (PFS) and establish its reliability and concurrent and convergent validity against performance measures. Design Cross‐sectional. Setting University of Pittsburgh, Pittsburgh, Pennsylvania. Participants Scale development samp...

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Veröffentlicht in:Journal of the American Geriatrics Society (JAGS) Jg. 63; H. 1; S. 130 - 135
Hauptverfasser: Glynn, Nancy W., Santanasto, Adam J., Simonsick, Eleanor M., Boudreau, Robert M., Beach, Scott R., Schulz, Richard, Newman, Anne B.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States Blackwell Publishing Ltd 01.01.2015
Wiley Subscription Services, Inc
Schlagworte:
Academic achievement
Activities of Daily Living
Adult development
Adults
Aged
Aging
At risk populations
Clinical research
Convergent validity
Cronbach's alpha
Cross-Sectional Studies
Deterioration
Disability Evaluation
fatigability
Fatigue
Fatigue - diagnosis
Female
Gait
Geriatric Assessment - methods
Geriatrics
Humans
Longitudinal studies
Male
Measures
Middle Aged
Mobility
Mobility Limitation
Older people
Pennsylvania
performance measures
Physical ability
Physical Exertion
Physical fitness
Principal components analysis
Race
Reliability
Rotation
Test validity and reliability
Test-Retest reliability
validation
Validity
Walking - physiology
Pennsylvania
fatigability
fatigue
mobility
performance measures
validation
ISSN:0002-8614, 1532-5415, 1532-5415
Online-Zugang:Volltext
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Zusammenfassung:Objectives To describe the development of the Pittsburgh Fatigability Scale (PFS) and establish its reliability and concurrent and convergent validity against performance measures. Design Cross‐sectional. Setting University of Pittsburgh, Pittsburgh, Pennsylvania. Participants Scale development sample: 1,013 individuals aged 60 and older from two registries; validation sample: 483 adults aged 60 and older from the Baltimore Longitudinal Study of Aging (BLSA). Measurements The scale development sample and BLSA participants self‐administered an initial 26‐item perceived fatigability scale. BLSA participants also completed measures of performance fatigability (perceived exertion from a standard treadmill task and performance deterioration from a fast‐paced long‐distance corridor walk), a 6‐m usual‐paced corridor walk, and five timed chair stands. Results Principal components analysis with varimax rotation reduced the 26‐item scale to the 10‐item PFS. The PFS showed strong internal consistency (Cronbach's alpha 0.88) and excellent test–retest reliability (intraclass correlation 0.86). In the validation sample, PFS scores, adjusted for age, sex, and race, were greater for those with high performance fatigability, slow gait speed, worse physical function, and lower fitness, with differences between high and low fatigability ranging from 3.2 to 5.1 points (P < .001). Conclusion The 10‐item PFS physical fatigability score is a valid and reliable measure of perceived fatigability in older adults and can serve as an adjunct to performance‐based fatigability measures for identifying older adults at risk of mobility limitation in clinical and research settings.
Bibliographie:ark:/67375/WNG-7J2TJ9XJ-C
istex:E45939571857C013DBFF684CF40E3D9583CBCD70
ArticleID:JGS13191
Pittsburgh Claude D. Pepper Older Americans Independence Center Developmental Pilot - No. NIH P30 AG024826
Intramural Research Program, National Institute on Aging
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0002-8614
1532-5415
1532-5415
DOI:10.1111/jgs.13191