Sex-dependent associations between daily physical activity and leg exercise blood pressure responses in healthy older adults

Joaquin Gonzales, Dustin M. Grinnell, Martha J. Kalasky, David N. Proctor

Research output: Contribution to journalArticlepeer-review

Abstract

We examined inter-individual and sex-specific variation in systolic (SBP) and diastolic (DBP) blood pressure responses to graded leg extension exercise in healthy older (60-78 y) women (n=21) and men (n=19). Maximal oxygen uptake (VO2max), body composition (DEXA), physical activity (accelerometry), and vascular function were measured to identify predictors of exercise BP. Neither VO2max nor activity counts were associated with the rise in SBP or DBP during exercise in men. The strongest predictors of these responses in men were age (SBP: r2=0.19, P=0.05) and peak exercise leg vasodilation (DBP: r2=-0.21, P<0.05). In women, the modest relationship observed between VO2max and exercise BP were abolished after adjusting for central adiposity and activity counts (best predictors, cumulative r2=0.53, P<0.05 for both SBP and DBP). These results suggest that determinants of variation in submaximal exercise BP responses among older adults are sex-specific, with daily physical activity in
Original languageEnglish
Pages (from-to)306-321
JournalJournal of Aging and Physical Activity
StatePublished - Oct 2011

Fingerprint Dive into the research topics of 'Sex-dependent associations between daily physical activity and leg exercise blood pressure responses in healthy older adults'. Together they form a unique fingerprint.

Cite this