MAGNETOMETER RESPIROMETER FOR LABORATORY AND DIVING STUDIES
Abstract
A system utilizing two pairs of magnets placed on the thorax and abdomen has been constructed and tested. It eliminates the use of mouthpieces, face masks, and plethysmographic methods for the measurement of respiratory tidal volume and respiratory rate. This is frequently desirable in laboratory studies to eliminate the artifacts produced by the use of the older methods, and with the addition of a miniature tape recorder and pressureproof underwater housing, would allow accurate measurements on SCUBA, Hoka, hard-hat, and breathhold divers. This method provided a 2.7-2.8% one standard deviation error in the supine position and a 4.2% error in the sitting position; the second subject had a 6.0% error while sitting.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 16, 1969
- Accession Number
- AD0697649
Entities
People
- James H. Dougherty Jr.
- Karl E. Schaefer
- Ted L. Parrot
- Wayne H. Miller
Organizations
- Naval Submarine Medical Research Laboratory