ASSOCIATION BETWEEN DYNAPENIA, LOW CARDIORESPIRATORY FITNESS AND CARDIODYNAPENIA WITH METABOLIC SYNDROME IN OLDER ADULTS: A CROSS-SECTIONAL STUDY
Aging; Cardiovascular Disease; Physical Fitness; Functional Fitness.
INTRODUCTION: Dynapenia and low cardiorespiratory fitness are associated with metabolic syndrome (MS). However, no previous study has investigated whether the association between cardiodynapenia (concomitant dynapenia and low cardiorespiratory fitness) and MS is stronger than dynapenia and low cardiorespiratory fitness.
AIM: To investigate the association between dynapenia, low cardiorespiratory fitness and cardiodynapenia with MS in older adults.
METHODS: Cross-sectional study involving older adults aged 60-80 years without history of cardiovascular disease living in Natal-RN. Muscle strength was assessed by the 30-s chair stand test and cardiorespiratory fitness by the 6-min walk test. Cardiodynapenia was defined as concomitant muscle strength and cardiorespiratory fitness below the percentile 25. MS was defined according to the NCEP-ATP III criteria. Poisson regression with robust variance was used to determine the prevalence ratio (PR) for MS in dynapenic, low cardiorespiratory fitness, and cardiodynapenic older adults. A p-value < 0.05 was adopted as statistical significance.
RESULTS: A total of 184 (65.6 ± 4.3 years) older adults were included in the analysis. The prevalence of dynapenia was 17.9% (n = 33), low cardiorespiratory fitness was 22.8% (n = 42), and cardiodynapenia was 10.9% (n = 20). The prevalence of MS was 56.5% (n = 104). Dynapenia was associated with MS (PR 1.30, CI 95% 1.01-1.66; p = 0.038). Low cardiorespiratory fitness was not associated with MS (RP 1.22, CI 95% 0.95-1.59; p = 0.113). Cardiodynapenia showed a stronger association with MS (RP 1.43, IC 95% 1,08-1,88; p = 0,012) than dynapenia. All analyses were adjusted for sex and body mass index.
CONCLUION: In older adults, cardiodynapenia has a stronger association with MS than dynapenia and low cardiorespiratory fitness.