Comparison of Handgrip and Leg Extension Strength in Predicting Slow Gait Speed in Older Adults

Objectives To compare the relative predictive power of handgrip and leg extension strength in predicting slow walking. Design Report of correlative analysis from two epidemiological cohort studies. Setting Foundation of the National Institutes of Health Sarcopenia Project. Participants Men and women...

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Vydáno v:	Journal of the American Geriatrics Society (JAGS) Ročník 64; číslo 1; s. 144 - 150
Hlavní autoři:	Fragala, Maren S., Alley, Dawn E., Shardell, Michelle D., Harris, Tamara B., McLean, Robert R., Kiel, Douglas P., Cawthon, Peggy M., Dam, Thuy-Tien L., Ferrucci, Luigi, Guralnik, Jack M., Kritchevsky, Stephen B., Vassileva, Maria T., Gudnason, Vilmunder, Eiriksdottir, Gudny, Koster, Annemarie, Newman, Anne, Siggeirsdottir, Kristin, Satterfield, Suzanne, Studenski, Stephanie A., Kenny, Anne M.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Blackwell Publishing Ltd 01.01.2016 Wiley Subscription Services, Inc
Témata:	Adults Aged Aged, 80 and over Aging - physiology Classification Cohort analysis Cohort Studies Epidemiology Extremities - physiopathology Female Gait Gait - physiology Geriatrics Hand Strength - physiology Humans Institutes Legs lower extremity function Lower limbs Male Men Motor ability Muscle Strength Muscle Weakness - diagnosis Muscle Weakness - etiology Muscle Weakness - physiopathology Muscle Weakness - prevention & control Muscular system Older people Predictive Value of Tests Sarcopenia Sarcopenia - diagnosis Sarcopenia - etiology Sarcopenia - physiopathology Sarcopenia - prevention & control Sex Factors Statistics Statistics as Topic Strength United States Walking Walking - physiology walking speed Women United States lower extremity function walking speed sarcopenia
ISSN:	0002-8614, 1532-5415
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Shrnutí:	Objectives To compare the relative predictive power of handgrip and leg extension strength in predicting slow walking. Design Report of correlative analysis from two epidemiological cohort studies. Setting Foundation of the National Institutes of Health Sarcopenia Project. Participants Men and women aged 67 to 93 (N = 6,766). Measurements Leg strength, handgrip strength, and gait speed were measured. Strength cutpoints associated with slow gait speed were developed using classification and regression tree analyses and compared using ordinary least squares regression models. Results The cutpoints of lower extremity strength associated with slow gait speed were 154.6 N‐m in men and 89.9 N‐m in women for isometric leg extension strength and 94.5 N‐m in men and 62.3 N‐m in women for isokinetic leg extension strength. Weakness defined according to handgrip strength (odds ratios (OR) = 1.99 to 4.33, c‐statistics = 0.53 to 0.67) or leg strength (ORs = 2.52 to 5.77; c‐statistics = 0.61 to 0.66) was strongly related to odds of slow gait speed. Lower extremity strength contributed 1% to 16% of the variance and handgrip strength contributed 3% to 17% of the variance in the prediction of gait speed depending on sex and mode of strength assessment. Conclusion Muscle weakness of the leg extensors and forearm flexors is related to slow gait speed. Leg extension strength is only a slightly better predictor of slow gait speed. Thus, handgrip and leg extension strength appear to be suitable for screening for muscle weakness in older adults.
Bibliografie:	Amgen ArticleID:JGS13871 Eli Lilly FNIH ark:/67375/WNG-H78PXDVQ-5 The Dairy Research Institute National Institute on Aging - No. 1U13AG041583; No. P30 AG024827 Food and Drug Administration Merck Abbott Nutrition Novartis istex:0772A3AAC0AEA6E7D91AF883207A7C38E3198241 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Article-2 ObjectType-Feature-1 content type line 23
ISSN:	0002-8614 1532-5415
DOI:	10.1111/jgs.13871