... EXPERIMENTS AND RESEARCHES . ... Originator of space experiment: Human Biology Department, . ... Recorded in the course of the experiment is the heart rate of South African cosmonaut at rest or under graduated physical exercise. to study human energy inputs in the course of physical exercise in space flight environment by analyzing water balance in the body. ... determining cosmonaut's power inputs over a 24-hour period of measurements based on his individual heart rate vs. energy input curve; . ...