LAUSR

Abstract type Clinical Research. Presentation type Poster Presentation. Introduction Cardiorespiratory fitness (CRF) is an independent predictor of morbidity and cardiac mortality. The gender differences of cardiorespiratory fitness in Saudi population is not well-descriped. The aim of the study is to determine the gender differences in CRF (workload achieved and chronotropic incompitance(CI)) among Saudi patients referred for treadmil exercise stress testing. Methodology A cross-sectional study that included patients who underwent a clinically indicated treadmail exercise stress testing following Bruce protocol between 2001 and 2015 in a Saudi tertiary care hospital. Patients yonger than 18 years old, or had a non-Bruce protocol exercise stress testing or pharmacoloical stress testing were excluded from the study. Linear and logistic regressions were used to determine the impact of gender on the choronotropic incompitance and workload achieved measured in metabolic equivelant of task (METs). Results A total of 10,673 were included in the study. The prevalence of hypertension, diabetes and dyslipidemia were 40.4%, 63.4% and 17.5%, respectively. In general, male patients had a higher METs achieved (11 vs. 8) than female patients. On the other hand, male patients had more often CI. Using multivariate loginstic regression, males had higher tendency (7 times) than females to achieve 10 METs or more with no differences in CI. Conclusion Our studyhighlight an existence of a significant wide CRF gap between males and females in the Saudi population. The prognostic impact of these findings need further evaluation.