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Titolo:
Coimpairments: Strength and balance as predictors of severe walking disability
Autore:
Rantanen, T; Guralnik, JM; Ferrucci, L; Leveille, S; Fried, LP;
Indirizzi:
NIA, Epidemiol Demog & Biometry Program, NIH, Bethesda, MD 20892 USA NIA Bethesda MD USA 20892 & Biometry Program, NIH, Bethesda, MD 20892 USA Natl Res Inst, INCRA, Dept Geriatr, Florence, Italy Natl Res Inst Florence Italy Inst, INCRA, Dept Geriatr, Florence, Italy Johns Hopkins Med Inst, Baltimore, MD 21205 USA Johns Hopkins Med Inst Baltimore MD USA 21205 st, Baltimore, MD 21205 USA
Titolo Testata:
JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES
fascicolo: 4, volume: 54, anno: 1999,
pagine: M172 - M176
SICI:
1079-5006(199904)54:4<M172:CSABAP>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOWER-EXTREMITY FUNCTION; MUSCLE STRENGTH; PHYSICAL PERFORMANCE; 75-YEAR-OLD MEN; OLDER WOMEN; ASSOCIATION; MOBILITY; ABILITY; PEOPLE; FALLS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Rantanen, T Univ Jyvaskyla, Dept Hlth Sci, POB 35, FIN-40351 Jyvaskyla, Finland Univ Jyvaskyla POB 35 Jyvaskyla Finland FIN-40351 la, Finland
Citazione:
T. Rantanen et al., "Coimpairments: Strength and balance as predictors of severe walking disability", J GERONT A, 54(4), 1999, pp. M172-M176

Abstract

Background, Little information is available on the joint effects of multiple impairments (coimpairments) on the risk of disability. Our aim was to study the joint effects of strength and balance impairments on severe walkingdisability. Methods. The data are from the baseline of the Women's Health and Aging Study (WHAS), a study of moderately to severely disabled women. A total of 1,002 women aged 65 and older participated in the tests, which took place in their homes. Severe walking disability was defined as self-reported inability to walk one-quarter mile and customary walling speed in a 4-meter test of less than or equal to 0.4 m/s. Balance was measured as an ability to holdprogressively more difficult stands (feet side-by-side, semi-tandem and tandem stands). Maximal knee extension strength was measured using a hand-held dynamometer. Results. There were 129 women who were severely walking disabled but able to walk at least minimally. In logistic regression analysis, balance and knee extension strength were independent predictors of severe walking disability. To study the combined effects, nine groups were formed on the basis ofstrength tertiles by balance categories in the entire population. In the best balance category, the crude prevalences of severe walking disability were 1.2%, 4.9%, and 14.3% in the highest to lowest strength tertiles. In themiddle balance category, the rates were 2.9%, 10.0%, and 45.4.1%, and in the poorest balance category 4.9%, 22.1%, and 42.6%, correspondingly. The age, body weight, and height-adjusted odds ratios (OR) showed that the risk of severe walking disability in the subgroup with best balance and strength was less than 5% of the risk in the subgroup with poorest balance and strength (OR.034, 95% confidence interval [CI].007-. 166). Correspondingly, in the subgroups with poorest strength and best balance (OR.097, 95% CI.025-.38) or poorest balance and best strength (OR.102, 95% CI.012-.866) the risk was about 10%. The age-specific estimates of prevalence of severe walking disability in women were: 2.0% for ages 65-74 years, 3.4% for ages 75-84 years, and 9.1% for ages 85 pears and older. Conclusions. The burden of coimpairments seems to be greater than the sum of single impairments involved. An effective way to reduce severe disabilities could be prevention of coimpairments.

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Documento generato il 25/11/20 alle ore 17:33:38