Rheographic studies of the lung and aorta have been performed on 20 patients with atrial fibrillation and on 30 normal individuals before and after Valsalva's manoever. The findings disclose a strongly expressed positive correlation between the duration of the cardiac cycle and the rheographic systol...
Duration of phases of the cardiac cycle in hypertension: Menendez, E. Braun, and Orias, O. Rev. argent. de cardiol. 2: 186, 1935doi:10.1016/s0002-8703(36)90610-5ELSEVIERAmerican Heart Journal
Objective:To investigate the relationship between RASSF1A gene methylation and the expression of cyclin D1 in gastric cardiac adenocarcinoma (GCA). Methods... W Guo,ZB Yang,LQ Fan,... - 《Tumor》 被引量: 8发表: 2009年 Association study of cell cycle proteins and human papillomavirus in lar...
However, the groups were not different from one another, which means that the shorter rest interval of 2 or 3 min of same intensity works equally on all variables and suggests that efficacy of a HIIT protocol is independent of short rest interval durations (2 or 3 min). Registration ...
To assess the biological plausibility of these claims, we examined temporal aspects of biological phenomena in three mammalian species. Our examination revealed that: (1) physiological declines associated with reproduction consistently occur at ages that are less than one-third of the median age at ...
These studies have revealed some unique features of equine physiology, and some exercise-specific veterinary problems that racehorses in particular encounter. However, only one study has attempted to characterise the speed-duration relationship in the horse (Lauderdale and Hinchcliff, 1999), and this ...
Abnormalities of ventricular action potential cause malignant cardiac arrhythmias and sudden cardiac death. Here, we aim to identify microRNAs that regulate the human cardiac action potential and ask whether their manipulation allows for therapeutic modulation of action potential abnormalities. Quantitative ana...
Increased CO levels from space hemolysis can have second-messenger modulatory effects on intracellular processes of the cardiac, vascular, ocular, bone, nutrition, circadian cycle, orthostatic hypotension, brain and muscle systems of astronauts16,17. Space tourism will considerably expand the number of ...
Objective To study the effect of the cycles of CPR on the quality of chest compressions.Methods To observe the quality of chest compressions in 195 medical personnel by using adult CPR simulator.Result The shallow compressions increased from the first CPR cycle to the fifth CPR cycle,accounting ...
Effects of Cycle Length Changes in cycle length alter the action potential duration of cardiac cells and thus change their refractory periods. Consequently, the changes in cycle length are important factors in the initiation or termination of certain dysrhythmias. Changes in action potential durations ...