For each variable, 3 measurements were performed in 3 consecutive cardiac cycles and the average obtained. (scielo.br)
Almost all organisms exhibit scaling exponents very close to 3/4 for metabolic rate and to 1/4 for biological times and dimensions (eg lifespan, cardiac cycle, aorta length, tree height). (faith.org.uk)
Crossan says that he's looking for the diastole and the systole of the Bible's cardiac cycle, but he isn't. (firstthings.com)