It was demonstrated that acute hypoxia increased muscle sympathetic nerve activity (MSNA) by using a microneurographic method at rest, but its effects on dynamic leg exercise are unclear. The purpose of this study was to clarify changes in MSNA during dynamic leg exercise in hypoxia. To estimate peak oxygen uptake (Vo(2 peak)), two maximal exercise tests were conducted using a cycle ergometer i...

Sustained dynamic exercise stimulates amino acid oxidation, chiefly of the branched-chain amino acids, and ammonia production in proportion to exercise intensity; if the exercise is intense enough, there is a net loss of muscle protein (as a result of decreased protein synthesis, increased breakdown, or both); some of the amino acids are oxidized as fuel, whereas the rest provide substrates for...

Cardiac resynchronization therapy (CRT) improves clinical status, quality of life, and exercise capacity, promotes reverse left ventricular (LV) remodelling, and prolongs survival of selected heart failure patients with intraventricular conduction delay. However, 30% of patients do not respond to CRT. Response to CRT largely depends on the extent of LV dyssynchrony, but also on the severity of ...

Cardiac output and arterial blood pressure increase during dynamic exercise notwithstanding the exercise-induced vasodilation due to functional sympatholysis. These cardiovascular adjustments are regulated in part by neural reflexes which operate to guarantee adequate oxygen supply and by-products washout of the exercising muscles. Moreover, they maintain adequate perfusion of the vital organs ...

according to the few studies in active rest interval between the resistance exercises sets, it can’t be explicitly commented about the effect of it on performance in consecutive sets. purpose: the purpose of the current study was to compare different active and passive rest interval durations (3 and 4 minutes) on the numbers of repetition of bench press with 50 and 75 percent of 1rm in untraine...