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Sarcopenia Prevalence Using Different Definitions in Older Community-Dwelling Canadians
S A Purcell1, M MacKenzie, T G Barbosa-Silva
1Dr. Carla Prado, Associate Professor, 4-002 Li Ka Shing Centre for Health Research Innovation (Office 2-021E), Edmonton, Alberta, Canada T6G 2E1, Tel: 780.492.7934
The Journal of Nutrition, Health & Aging
|August 4, 2020
Summary
Sarcopenia prevalence is low in older Canadians. However, different diagnostic criteria show poor agreement, making diagnosis challenging for this age group.
Area of Science:
- Gerontology
- Musculoskeletal Health
- Epidemiology
Background:
- Sarcopenia, a condition of muscle loss, affects millions globally.
- Existing diagnostic criteria for sarcopenia vary, leading to inconsistencies.
Purpose of the Study:
- To determine the prevalence of sarcopenia in older Canadians.
- To compare the agreement of three international sarcopenia definitions.
Main Methods:
- Observational cohort study of 12,592 Canadians aged 65+ from the Canadian Longitudinal Study on Aging.
- Assessed appendicular lean mass (ALM), gait speed, and handgrip strength.
- Applied criteria from IWGS, FNIH, and EWGSOP for sarcopenia diagnosis.
Main Results:
- Gait speed below 1.0 m/s was the most common deficit (over 56%).
- Sarcopenia prevalence ranged from 1.4% to 7.2% across definitions and sexes.
- Agreement between criteria was low (Cohen's kappa 0.01–0.23), indicating minimal concordance.
Conclusions:
- Sarcopenia prevalence is relatively low in older Canadian adults.
- Current sarcopenia definitions demonstrate poor agreement in identifying affected individuals.
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