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

• Older adults with dynapenic abdominal obesity and dynapenic obesity have a longer exposure time to sedentary behavior and spend less time on physical activity; • Physical activity and sedentary behavior are accurate for screening older adults with dynapenic abdominal obesity and dynapenic obesity; • Time spent in physical activity and time exposed to sedentary behavior can be combined to optimize screening for dynapenic abdominal obesity and dynapenic obesity in the older adults. To 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. A 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. In 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. Both HPA and SB demonstrated discriminatory capacity for screening DAO and DO in the study population. [ABSTRACT FROM AUTHOR]