Licensed from medwireNews with permission from Springer Healthcare Ltd. All rights reserved. Neither of these parties endorse or suggest any commercial products, services, or equipment.. Aging women show nonlinear declines in fitness, activity levels By MedWire Reporters Exercise amounts and cardiorespiratory fitness in females usually do not decline in a linear way with age, research shows. After age 60 years, fitness amounts in women rapidly declined, whereas physical activity amounts were highest in 50-year-old women and plateaued at age group 60, report investigators. ‘The menopause transition seems to be a crucial period to initialize and promote physical activity, for sedentary women especially, because the accelerated decline in both activity and fitness starts around this time,’ say Xuemei Sui and co-workers.Restricting the cohort to females with a analysis of major depression markedly attenuated the associations . The C-statistic for the propensity-score versions ranged from 0.84 to 0.91, indicating that substantial differences in the characteristics of the sufferers remained following the cohort was restricted to women with depressive disorder. Stratification based on the propensity score ensured that comparisons were made between groups with nearly identical features .