ArticleAging clinical and experimental research2025
Association between low handgrip strength and the increased risk of age-related macular degeneration: results from UK biobank cohort study.
Article in Aging clinical and experimental research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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9 authors.
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Abstract
objectivesTo determine whether handgrip strength is associated with the incidence of age-related macular degeneration.
methodsA prospective cohort study of over 500 thousand UK Biobank participants aged 40-69 years. Individuals ≥ 50 years and without age-related macular degeneration at baseline were included. Exposure was the handgrip strength measured by dynamometer. Primary outcome was the incidence of age-related macular degeneration during 13 years of follow-up. Cox proportional-hazard models were fitted to estimate the risk effect for handgrip strength on age-related macular degeneration, and stratified for sociodemographic and lifestyle factors. Mediation models were regressed to explore underlying mechanisms driven by inflammatory and erythrocyte-related biomarkers.
results382174 eligible participants in the UK Biobank were included. After 4680431 person-year, 7987 individuals (2.09%) developed age-related macular degeneration. Individuals in the lowest quintile of handgrip strength had higher risk of age-related macular degeneration incidence (Hazard Ratio, 1.25; 95% CI, 1.16-1.35) compared with those in the highest quintile. Per 5 kg decrement in handgrip strength was associated with increased risk of age-related macular degeneration incidence (Hazard Ratio, 1.06; 95% CI, 1.04-1.08) with similar trend among all subgroups except for sex. Specific inflammatory and erythrocyte-related biomarkers partially (37.5%) mediated the incidence of age-related macular degeneration as substantial biological mechanisms following handgrip strength decrease.
conclusionsOur findings suggest that handgrip strength is associated with the incidence of age-related macular degeneration under the mediation of systemic proinflammatory factors. The current study holds an outlook for improved visual health over the evaluation and intervention of muscle strength in old-age population.
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