The current evidence suggests that the healthy heart does not sense the optimal cardiac
output (Q̇) because the different organ systems that influence cardiac function do not …

Sympathetic transduction is reduced following chronic high-altitude (HA) exposure;
however, vascular α-adrenergic signaling, the primary mechanism mediating sympathetic …

Oxygen delivery is viewed as tightly coupled to demand in exercise below critical power
because increasing oxygen delivery does not increase VO 2 V_O_2. However, whether the …

Keywords: chronic hypoxia; exercise; oxygen delivery; sympathetic vasoconstriction EN
chronic hypoxia exercise oxygen delivery sympathetic vasoconstriction 381 383 3 01/17/23 …

Keywords: adrenergic; adrenergic blockade; exercise; high altitude; hypoxia;
vasoconstriction; vasodilation EN adrenergic adrenergic blockade exercise high altitude …

Background: During exercise, there is an increase in sympathetic activity, causing
vasoconstriction and reduced blood flow. However, to maintain blood flow and oxygen …

As we exercise long and/or hard enough, exercise related metabolites impair the ability of
muscle excitation to cause muscle contraction–reflecting an impairment of excitation …