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The association between metabolic syndrome and restrictive ventilatory dysfunction in older persons. | LitMetric

AI Article Synopsis

Article Abstract

Background: The restrictive, but not the obstructive respiratory dysfunction, is associated with an increased risk of developing type 2 diabetes mellitus. Our aim was to verify in an elderly nondiabetic population whether a restrictive respiratory pattern was associated with a higher prevalence of metabolic syndrome and increased insulin resistance than were obstructive and normal respiratory patterns.

Methods: We performed a cross-sectional study of 159 consecutive nondiabetic elderly persons attending two social centers. According to their spirometric pattern, volunteers were classified into the following categories: normal spirometry, obstructive (forced expiratory volume in 1 second/forced vital capacity<0.70), and restrictive pattern (forced vital capacity<80% predicted, forced expiratory volume in 1 second/forced vital capacity>or=0.70). Independent correlates of the metabolic syndrome were identified.

Results: The prevalence of metabolic syndrome was higher in restrictive (56%) than in both normal (21.4%, p=.001) and obstructive volunteers (12.9%, p=.001). Insulin resistance, as assessed by the log transformation of the HOmeostasis Model Assessment (HOMA), was higher in restrictive than in obstructive and normal volunteers (1+/-0.6 vs 0.3+/-0.6 and 0.5+/-0.5, p<.001). Restriction was an independent correlate of metabolic syndrome, also after adjustment for waist circumference and body mass index (odds ratio=3.23, 95% confidence interval, 1.23-8.48; p=.01).

Conclusion: Restrictive, but not obstructive respiratory pattern, is associated with metabolic syndrome and insulin resistance, and does not only reflect a limitation of ventilation due to visceral obesity. Metabolic abnormalities likely mediate cardiovascular risk in patients with restrictive respiratory impairment.

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Source
http://dx.doi.org/10.1093/gerona/62.7.760DOI Listing

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