Reliability of the 400-M usual-pace walk test as as assessment of mobility limitation in older adults
Articolo
Data di Pubblicazione:
2004
Citazione:
Reliability of the 400-M usual-pace walk test as as assessment of mobility limitation in older adults / Y.M. Rolland, M. Cesari, M.E. Miller, B.W. Penninx, H.H. Atkinson, M. Pahor. - In: JOURNAL OF THE AMERICAN GERIATRICS SOCIETY. - ISSN 0002-8614. - 52:6(2004), pp. 972-976.
Abstract:
OBJECTIVES:
To assess the test-retest reliability of the 400-m usual-pace walk test (400-MWT), and to determine whether the 4-m walk test predicts inability to walk 400 m.
DESIGN:
Observational.
SETTING:
Community, 20-m tract course.
PARTICIPANTS:
Sixty study participants (aged>or=65) were enrolled from the community and met the following eligibility criteria: self-reported difficulty in two or more of four functional domains (mobility and exercise tolerance, upper extremity function, basic self-care, higher functional tasks of independent living) and a score of 18 or higher on the Mini-Mental State Examination.
METHODS:
The 400-MWT and 4-m walk test were each repeated within 7 days.
RESULTS:
The mean age+/-standard deviation of the study population was 84.3+/-6.3; 88.3% were women. Nineteen participants (31.7%) failed both 400-MWTs, and 41 successfully completed both tests (kappa=1). Mean walking speed for the 4-m test was 0.87+/-0.18 m/s for those who completed the 400-MWT and 0.53+/-0.17 m/s for those who failed (P<.001). The Spearman correlation coefficient between 4-m and 400-m walking speeds was 0.93. The estimated area under the receiver operating characteristic curve between 4-m walking speed and the ability to perform the 400-MWT was 0.91. The 4-m gait speed averaged less than 0.6 m/s in 80% of subjects who failed the 400-MWT.
CONCLUSION:
The test-retest reliability for inability to complete the 400-MWT is high. Four-m walking speed is highly predictive of ability to perform the 400-MWT. These findings may prove useful to future clinical trials and observational studies that involve assessment of mobility limitations in older adults.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Disability; Reliability; Speed; Walk test; Aged; Aged, 80 and over; Exercise Tolerance; Female; Humans; Male; Predictive Value of Tests; Reproducibility of Results; Disability Evaluation; Geriatric Assessment; Walking; Geriatrics and Gerontology
Elenco autori:
Y.M. Rolland, M. Cesari, M.E. Miller, B.W. Penninx, H.H. Atkinson, M. Pahor
Link alla scheda completa: