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Associations Between Vision, Hearing, and Olfactory Impairment With Handgrip Strength
Bamini Gopinath1, Gerald Liew1, George Burlutsky1
1The University of Sydney, New South Wales, Australia.
Journal of Aging and Health
|April 16, 2019
Summary
Multiple sensory impairments, including vision, hearing, and olfactory loss, were linked to reduced handgrip strength in older women. This suggests a connection between sensory decline and muscle strength in this demographic.
Area of Science:
- Gerontology
- Sensory Neuroscience
- Musculoskeletal Health
Background:
- Sensory impairments (vision, hearing, olfaction) are common in older adults.
- Reduced muscle strength, indicated by handgrip strength, is associated with adverse health outcomes.
- The relationship between combined sensory deficits and muscle strength requires further investigation.
Purpose of the Study:
- To investigate the cross-sectional associations between multiple sensory impairments and handgrip strength in older adults.
- To determine if sensory loss predicts reduced muscle strength in men and women separately.
Main Methods:
- Utilized data from 947 participants aged 65+ in the Blue Mountains Eye Study.
- Assessed visual acuity, hearing thresholds, and olfactory function (San Diego Odor Identification Test).
- Measured handgrip strength using a dynamometer and performed multivariable adjusted analyses.
Main Results:
- Women with two or three sensory impairments exhibited lower adjusted mean handgrip strength compared to those with none or one impairment (p ≈ 0.05-0.06).
- The difference in handgrip strength was approximately 1.1 kg lower for women with multiple sensory impairments.
- No significant associations were found between sensory impairments and handgrip strength in men.
Conclusions:
- Multiple sensory impairments are associated with reduced muscle strength in older women.
- Sensory deficits may contribute to sarcopenia or frailty in aging populations.
- Further research is warranted to explore the mechanisms underlying this association and its implications for health interventions.
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