MATERIALS AND METHODS Six, male volunteer subjects were chosen from the hazard-
duty panel of the Aerospace Medical Research Laboratories. They were 20-33 years of age …

Changes in ventricular function, as described by systolic time interval analysis, have been
studied during heat stress and the time course of these changes, as well as changes in heart …

The effects of thermal radiation on heart rate, ventilation rate, and oxygen consumption rate
were investigated at various conditions of dry-bulb temperature, air velocity, and exercise …

METHOD Measurements of respiratory heat loss were made on four adult male
unacclimatized subjects under all combinations of three levels of deep body …

Method The experiment was performed in the morning under basal conditions. The subjects
were prepared beforehand by briefly outlining the procedure, and they were given 0.1 Gm …

METHODS Subjects. Six normal male volunteers participated in the experiment. Their
physical characteristics are given in Table 1. None of the subjects was an athlete, but all …

METHODS Angiostomy cannulas for the pulmonary vessels, as described by London and
Chloponina(6), and modified by Hamilton, Woodbury and Vogt (7)) and Katz and Steinitz (8) …

Six resting men were exposed to three temperatures (15.5, 21, 26.5 degrees C) for 120 min
at three altitudes (sea level, 2,500 m, 5,000 m). A 60-min sea-level control at the scheduled …

Abstract i. The scale of effective temperature, which is widely used in America, takes
cognizance of the humidity and rate of movement of the air as well as of its temperature. A …

METHODS Two environmental conditions were maintained in an air-conditioned room with
minimal air movement: dry bulb 18 C and wet bulb 13 C, and dry bulb 43 C and wet bulb 23 …