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J Am Geriatr Soc. 2018 Dec;66(12):2314-2320. doi: 10.1111/jgs.15613. Epub 2018 Oct 30.

Association Between Sarcopenic Obesity and Falls in a Multiethnic Cohort of Postmenopausal Women.

Author information

1
Department of Epidemiology and Biostatistics, University of Arizona, Tucson, Arizona.
2
Trauma Research Program, Chandler Regional Medical Center, Chandler, Arizona.
3
University of Arizona Cancer Center, Tucson, Arizona.
4
Department of Nutritional Sciences, University of Arizona, Tucson, Arizona.
5
Department of Physical Therapy, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, Illinois.
6
Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.
7
Family Medicine and Public Health, School of Medicine, University of California, San Diego, La Jolla, California.
8
Stanford Prevention Research Center, School of Medicine, Stanford University, Stanford, California.

Abstract

OBJECTIVES:

To investigate associations between sarcopenia, obesity, and sarcopenic obesity and incidence of falls in a racially and ethnically diverse cohort of healthy postmenopausal women.

DESIGN:

Prospective cohort study.

SETTING:

Three Women's Health Initiative (WHI) clinical centers (Tucson-Phoenix, AZ; Pittsburgh, PA; Birmingham, AL).

PARTICIPANTS:

Postmenopausal women aged 50 to 79 enrolled in the WHI who underwent bone and body composition scans using dual-energy x-ray absorptiometry at baseline (N = 11,020).

MEASUREMENTS:

Sarcopenia was defined as the lowest 20th percentile of appendicular lean mass, correcting for height and body fat. Obesity was defined as a body fat percentage greater than 42%. Sarcopenic obesity was defined as co-occurrence of sarcopenia and obesity. The fall outcome was defined as falling 2 or more times in any year during 7 years of follow-up. The risk of falls associated with sarcopenic obesity were analyzed using log binomial regression models stratified according to age and race/ethnicity.

RESULTS:

Sarcopenic obesity was associated with greater risk of falls in women aged 50 to 64 (relative risk (RR) = 1.35, 95% confidence interval (CI)=1.17-1.56) and 65 to 79 (RR = 1.21, 95% CI=1.05-1.39). Sarcopenic obesity related fall risk was higher in Hispanic women (RR = 2.40, 95% CI=1.56-3.67) than non-Hispanic white women (RR = 1.24, 95% CI=1.11-1.39).

CONCLUSION:

In a multiethnic cohort of postmenopausal women, sarcopenic obesity-related fall risk was high in women younger than 65 and those age 65 and older. Sarcopenic obesity posed the highest risk for falls in Hispanic women. The findings support identification of causal factors and health disparities in sarcopenic obesity to customize fall prevention strategies and ameliorate this significant public health burden. J Am Geriatr Soc 66:2314-2320, 2018.

KEYWORDS:

Women's Health Initiative; falls; obesity; race; sarcopenia

PMID:
30375641
PMCID:
PMC6289680
[Available on 2019-12-01]
DOI:
10.1111/jgs.15613
[Indexed for MEDLINE]

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