Cited by 229Nutrition and Health in AgingFrailty in Older AdultsBalance, Gait, and Falls Prevention

Absolute strength and loss of strength as predictors of mobility decline in older adults: the InCHIANTI study

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Hicks, G. E., Shardell, M., Alley, D. E., Miller, R. R., Bandinelli, S., Guralnik, J., Lauretani, F., Simonsick, E. M. +1 more·2012·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

BACKGROUND: Theoretical definitions of sarcopenia traditionally emphasize age-related loss of muscle strength; however, most analyses of the association between strength and mobility examine strength at a single time point. This study sought to identify sex-specific cutpoints for muscle strength and power (at one time point) and 3-year changes in strength and power that would maximize prediction of 3-year mobility decline. METHODS: Longitudinal analysis of 934 adults aged ≥65 years enrolled in the Invecchiare in Chianti study was conducted. Grip strength, knee extension strength, and lower extremity power were measured at baseline and 3 years postenrollment. Mobility function (gait speed and self-reported mobility disability) was measured at 3 and 6 years postenrollment. Classification and regression tree analysis was used to predict mobility decline from Years 3 to 6. RESULTS: Men with knee extension strength <19.2 kg and grip strength <39.0 kg had clinically meaningful declines in gait speed of .24 m/s. Furthermore, men with power <105 W were nearly nine times more likely to develop incident mobility disability (likelihood ratio = 8.68; 95% confidence interval = 3.91, 19.44). Among women, knee extension strength <18.0 kg was associated with a minimal gait speed decline of 0.06 m/s, and women with leg power <64 W were three times more likely to develop incident mobility disability (likelihood ratio = 3.01; 95% confidence interval = 1.79, 5.08). Three-year changes in strength and power did not predict mobility decline in either sex. CONCLUSIONS: Findings suggest that strength and power measured at one time point are more predictive of mobility decline than 3-year changes and that low strength and power are particularly powerful risk factors in men.

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  1. [1]1. Morley JE, Baumgartner RN, Roubenoff R, Mayer J, Nair KS. Sarco- penia. J Lab Clin Med. 2001;137:231-243.

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Authors
Hicks, G. E., Shardell, M., Alley, D. E., Miller, R. R., Bandinelli, S., Guralnik, J., Lauretani, F., Simonsick, E. M., & Ferrucci, L.
Affiliations
  • University of Maryland, Baltimore (US)
  • Azienda Sanitaria di Firenze (IT)
  • National Institutes of Health (US)
  • University of Parma (IT)
  • Johns Hopkins University (US)
  • National Institute on Aging (US)
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2011-05-05
Volume
67A
Issue
1
Pages
66-73
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2097701643
Cited by
229
References
37
Citations by year
2026: 9 · 2025: 6 · 2024: 8 · 2023: 10 · 2022: 23 · 2021: 17 · 2020: 20 · 2019: 14 · 2018: 14 · 2017: 17 · 2016: 19 · 2015: 21 · 2014: 19 · 2013: 12 · 2012: 17
FWCI
10.96
Type
journal article
Language
en
Open access
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministero della Salute (263 MD 821336)
  • National Institutes of Health (263 MD 821336)
  • National Institute on Aging (821336, 263MD821336, R01AG029315, K23AG019161)
  • National Institute on Minority Health and Health Disparities (263-MD-916413, 263MD 821336)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R21HD057274, K12HD043489)
Topics
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Geriatrics and Gerontology › Frailty in Older Adults
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Balance, Gait, and Falls Prevention
Keywords
sarcopenia, muscle strength, muscle power, mobility decline, walking speed, mobility impairment, older adults, sex differences, grip strength, quadriceps strength, leg power, risk prediction, InCHIANTI study
MeSH terms
Aged, Aged, 80 and over, Female, Gait, Humans, Knee, Longitudinal Studies, Male, Geriatric Assessment, Muscle, Skeletal, Hand Strength, Mobility Limitation, Muscle Strength, Sarcopenia

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