Key result
Women exhibited higher left ventricular diastolic elastance, total stiffness index, and ventricular-vascular coupling index, but lower end-systolic elastance compared to men across all exercise stages (P<0.05).
Why the study?
Does the cardiovascular system response to exercise stress differ between healthy young men and women?
Observational (n=40)
Does the cardiovascular system response to exercise stress differ between healthy young men and women?
Healthy young women exhibit higher ventricular diastolic elastance and ventricular-vascular coupling index but lower end-systolic elastance compared to men during exercise stress, suggesting lower exercise tolerance.
Answers are grounded in this paper and cite their sources.
Sex-specific ventricular-vascular responses during exercise may affect stress-test interpretation; leaves open validation in clinical populations.
OBJECTIVE: To study the differences of cardiovascular system between men and women in response to exercise stress. METHODS: Forty healthy youth were tested according to Bruce protocol of exercise stress. They were detected by ultrasonography during the rest, peak exercise, and recovery stages, respectively. The left ventricular diastolic elastance (Ed), effective arterial elastance (Ea), left ventricular end-systolic elatance (Ees), ventricular-vascular coupling index (VVI), and total stiffness index (TSI) were measured and calculated according to the formulas. The results of all stages were compared according to genders. RESULTS: All stages, the Ed, TSI, and VVI of women were higher than those of men, but the Ees was lower than that of men (all P<0.05); there was no significant difference in Ea between men and women. The Ed, Ees, Ea, and TSI were closely related with left ventricular oxygen consumption and heart function, and women showed more closely. Before and after exercise, the changes were different in Ed, Ees, Ea, TSI, and VVI (all P<0.05), and VVI changed least. CONCLUSIONS: Before and after exercise, the ventricular stiffness matched well with arterial stiffness and maintained within a narrow range. For women, the tolerance of exercise was lower than that of men.
No takes yet. Share an insight, caveat, or question.
Li et al. (2015) conducted an observational in Healthy (n=40). Female gender vs. Male gender was evaluated on Ventricular-vascular coupling parameters (Ed, Ea, Ees, VVI, TSI) (p=<0.05). Women exhibited higher left ventricular diastolic elastance, total stiffness index, and ventricular-vascular coupling index, but lower end-systolic elastance compared to men across all exercise stages (P<0.05).
Synapse has enriched 10 related papers. Consider them for comparative context: