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Titolo:
MAINTENANCE OF BALANCE, GAIT PATTERNS, AND OBSTACLE CLEARANCE IN ALZHEIMERS-DISEASE
Autore:
ALEXANDER NB; MOLLO JM; GIORDANI B; ASHTONMILLER JA; SCHULTZ AB; GRUNAWALT JA; FOSTER NL;
Indirizzi:
UNIV MICHIGAN,GERIATR CTR,300 N INGALLS BLDG ANN ARBOR MI 48109 VET ADM MED CTR,DEPT INTERNAL MED,DIV GERIATR MED ANN ARBOR MI 48105 VET ADM MED CTR,CTR GERIATR RES EDUC & CLIN ANN ARBOR MI 48105 UNIV MICHIGAN,DEPT MECH ENGN & APPL MECH ANN ARBOR MI 48109 UNIV MICHIGAN,DEPT PSYCHIAT & PSYCHOL ANN ARBOR MI 48109 UNIV MICHIGAN,DEPT NEUROL ANN ARBOR MI 48109
Titolo Testata:
Neurology
fascicolo: 5, volume: 45, anno: 1995,
pagine: 908 - 914
SICI:
0028-3878(1995)45:5<908:MOBGPA>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
RISK-FACTORS; POSTURAL CONTROL; SENILE DEMENTIA; FALLS; ADULTS; YOUNG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
N.B. Alexander et al., "MAINTENANCE OF BALANCE, GAIT PATTERNS, AND OBSTACLE CLEARANCE IN ALZHEIMERS-DISEASE", Neurology, 45(5), 1995, pp. 908-914

Abstract

Patients with cognitive impairment, particularly as a result of Alzheimer's disease (AD), are at increased risk for falls, but it is unclear how, or if, they differ from normal adults in their balance, gait, or ability to clear an obstacle in their path. Using an optoelectronic camera system, we compared body motions and force output at the feet in patients with probable AD (n = 17) with those in healthy older adults (n = 15) while they stood on a force plate or on a beam attached to the force plate that was either stationary or accelerating. Using the same camera system and comparing this AD group with another group of healthy older adults (n = 24), we observed the AD patients during normal walking and while clearing 25- and 152-mm-high obstacles. None of the AD patients had extrapyramidal signs or musculoskeletal impairments. Compared with healthy older adults, normal walking speed was significantly slower in the AD group (p < 0.0001). While clearing either obstacle, the AD patients were significantly slower in their approach (p < 0.0001) and crossing (p < 0.0001) speeds and landed closer to the obstacle after having crossed it; (p < 0.02). Moreover, the percent of trials in which a subject made contact with an obstacle was significantlyhigher in patients with AD (p < 0.005). The AD patients had no evidence of difficulty standing on a flat stationary surface unless the surface suddenly moved. Seven AD patients who were unable to stand on a reduced support surface scored lower in language and memory tasks as well as in caregiver reports of motor coordination than AD patients able to perform the task. In summary, compared with healthy older adults, AD patients walked more slowly, landed more closely to the obstacle after crossing it, and were more likely to contact the obstacle in their path. Independent of extrapyramidal symptoms, these AD patients had nodifficulties in balance unless confronted with a more challenging support surface. Changes in obstacle clearance and altered responses to apostural challenge may contribute to the increased fall and fracture risk in AD.

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Documento generato il 14/07/20 alle ore 10:09:51