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...
1. Understanding the Menstrual Cycle: The menstrual cycle, also known as the sexual cycle, refers to the regular natural changes that occur in the female reproductive system. 2. Duration of the Cycle: The average duration of the menstrual cycle in women is typically around 28 days. However, ...
The relationship between the duration of G 1 phase of eukaryotic cell cycle and age of cell donor was studied. The relationship of these processes with age-specific changes in the expression of cyclin D1 and nuclear receptors was traced. Obvious changes in the dynamics of expression of cyclin ...
The average duration of the cardiac cycle occupied by systole and diastole of the heart in adult man is aboutdoi:10.1001/jama.1926.02680100042012American Medical AssociationJournal of the American Medical Association
CLINICAL JOURNAL OF SPORT MEDICINESerrano E, Legaz A, Terreros JL, Lopez M, Cremades D, Carranza LE, Izquierdo S, Bocos P: Cardiac biomarkers and exercise duration and intensity during a cycle-touring event. Clin J Sport Med 2009, 19:293-299....
Sexual desire is often present at the beginning of a romantic relationship. However, research is divided regarding whether, and how, desire is experienced as a relationship progresses. The authors examined relationship duration and its effect on sexual desire in a sample of 170 undergraduate men and...
Consequently, as the basic cycle length is diminished, each action potential tends to occur earlier in the inactivation period of the iKr current initiated by the preceding action potential. Therefore, the shorter the basic cycle length, the greater the outward K+ current will be during phase 2...
It is influenced by several physiological and pathological factors and associated with several cardiac diseases. We studied repolarization duration variability (RDV) and dependence of RTm/RR among normal subjects of different age groups, as well as between normal subjects and subjects with cardiac ...
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 ...
Projections of duration of life for humans based on mathematical models have led some researchers to claim that there is no lower limit to death rates or upper limit to life expectancy, and that a life expectancy of 100 will be achieved in the 21st century. To assess the biological plausibili...