BACKGROUND: Metabolic syndrome (MetS) is a potentially reversible cause of disability in the elderly people. The published literature suggests that the MetS-disability association is likely to be complex, depending on co-existing risk factors and with possible variation for each of the specific MetS components. Further evidence is needed to understand the specific consequences of the MetS as a whole and as a function of its components. METHODS: Prospective analyses included data from 6,141 participants (60.9% women) aged 65 and older from the Three-City cohort. Mixed logistic models were used to determine associations between MetS (National Cholesterol Education Program Adult Treatment Panel III criteria) and 7-year incident disability measured as social restriction, mobility limitations (Rosow and Breslau scale), and limitations in instrumental and basic activities of daily living. RESULTS: MetS was associated with incident social restriction (odds ratio = 1.55, 95% CI: 1.14-2.09), limited mobility (odds ratio = 1.52, 95% CI: 1.21-1.90), and instrumental activities of daily living limitations (odds ratio = 1.62, 95% CI: 1.24-2.10) after adjustment for a range of potential sociodemographic, health behavior, and health status confounders at baseline. These associations were independent of chronic conditions, including cardiovascular disease and dementia. There was evidence of associations between MetS components: central obesity, high triglycerides, and elevated fasting glucose and incidence of limitations in mobility and instrumental activities of daily living. CONCLUSIONS: Our results suggest that the increased risk of mobility and instrumental activities of daily living limitations in the elderly people associated with MetS is over and above that associated with its components.
BACKGROUND:Metabolic syndrome (MetS) is a potentially reversible cause of disability in the elderly people. The published literature suggests that the MetS-disability association is likely to be complex, depending on co-existing risk factors and with possible variation for each of the specific MetS components. Further evidence is needed to understand the specific consequences of the MetS as a whole and as a function of its components. METHODS: Prospective analyses included data from 6,141 participants (60.9% women) aged 65 and older from the Three-City cohort. Mixed logistic models were used to determine associations between MetS (National Cholesterol Education Program Adult Treatment Panel III criteria) and 7-year incident disability measured as social restriction, mobility limitations (Rosow and Breslau scale), and limitations in instrumental and basic activities of daily living. RESULTS: MetS was associated with incident social restriction (odds ratio = 1.55, 95% CI: 1.14-2.09), limited mobility (odds ratio = 1.52, 95% CI: 1.21-1.90), and instrumental activities of daily living limitations (odds ratio = 1.62, 95% CI: 1.24-2.10) after adjustment for a range of potential sociodemographic, health behavior, and health status confounders at baseline. These associations were independent of chronic conditions, including cardiovascular disease and dementia. There was evidence of associations between MetS components: central obesity, high triglycerides, and elevated fasting glucose and incidence of limitations in mobility and instrumental activities of daily living. CONCLUSIONS: Our results suggest that the increased risk of mobility and instrumental activities of daily living limitations in the elderly people associated with MetS is over and above that associated with its components.
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