Physical activity and sedentary behavior as screening tools for dynapenic abdominal obesity and dynapenic obesity in older adults: A cross-sectional investigation

Abstract

ObjectiveTo investigate the discriminatory capacity of habitual physical activity (HPA) and sedentary behavior (SB) when screening for dynapenic abdominal obesity (DAO) and dynapenic obesity (DO) in older adults. MethodsA cross-sectional population epidemiological investigation was conducted with 207 older adults. Obesity was diagnosed by high waist circumference and body mass index. Dynapenia was identified through low handgrip-strength. ResultsIn men, the best HPA cutoff points to discriminate DAO and DO were, respectively, 80 minutes/week (sensitivity: 100%; specificity: 71.95%) and 145 minutes/week (sensitivity: 100%; specificity: 54.88%). The best SB value for DAO was 351.43 minutes/day (sensitivity: 100%; specificity: 65.85%) and 400 minutes/day (sensitivity: 100%; specificity: 79.27%) for DO. In women, 150 minutes/week was the best HPA value for both DAO (sensitivity: 75%; specificity: 57.84%) and DO (sensitivity: 90.91%; specificity: 56.76%). The best SB cutoff points for DAO and DO were 381.43 minutes/day (sensitivity: 60%; specificity: 82.35%) and 337.14 minutes/day (sensitivity: 72.73%; specificity: 65.80%), respectively. ConclusionBoth HPA and SB demonstrated discriminatory capacity for screening DAO and DO in the study population.