AN INSTRUMENT FOR THE TOTALIZATION OF HEARTBEATS AND RESULTS OF ITS APPLICATION,
LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF LOCKHEED PALO ALTO RESEARCH LAB
Pagination or Media Count:
The Heartbeat Totalizer was used in a research program concerned with the number of heartbeats occurring in 24 hrs. in three groups of subjects. It was found that a group of subjects selected on the basis of a strong sense of time urgency Type A would show a 400- to 700-per cent greater incidence of clinical coronary artery disease than people exhibiting the converse behavior pattern Type B. It was found that the average daily heart rate appeared to be about the same for all categories of subjects except those who had suffered from a previous infarction and were experiencing symptoms. This latter group had a faster heart rate. Heartbeat totals ranging from 110,000 to 125,000 for a 24 hr. period were generally encountered. In general, the system was quite insensitive to interference. Details are presented describing measurement techniques, design considerations, and electrode placement of the newly-developed heartbeat measurement instrument.