Accession Number : AD0611148

Title :   OXYGEN CONSUMPTION IN UNDERWATER SWIMMING,

Corporate Author : NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C

Personal Author(s) : Wilson,W. K.

Report Date : 01 SEP 1953

Pagination or Media Count : 8

Abstract : The principal objectives of the study were to obtain physiological data and to quantitate the relative efficiency of underwater demolition team swimmers and Experimental Diving Unit personnel who had participated in evaluations of breathing apparatus. Numerical results are presented in tabular and graphic form. Speeds below 0.7 knots were uncomfortably slow, and the ability to control depth by 'planking' was largely lost. While the 'good' swimmers were able to maintain a speed of 1.0 knots for a significant time, the majority considered it uncomfortably fast. Speeds in excess of 1.0 knots were maintained with difficulty. Some subjects were able to swim at those speeds barely long enough to permit adequate measurements. Subjects were generally agreed that 0.8 knots was the most suitable speed for prolonged swimming and felt that they could maintain this almost indefinitely. Limitations of the breathing apparatus contributed to the difficulty in maintaining higher speeds. Symptoms of carbon dioxide toxicity appeared in some subjects at 1.0 knots before the size of the absorption canisters was increased, and 'breathing resistance' was not an infrequent complaint. There were also indications that 'drag,' influenced by the contours of the apparatus, became an important factor at high speeds.

Descriptors :   (*OXYGEN CONSUMPTION, SWIMMING), (*SWIMMING, UNDERWATER), DIVING, RESPIRATION, SCUBA DIVERS, NAVAL PERSONNEL, VELOCITY, CARBON DIOXIDE, TOXICITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE