Accession Number : ADA115733

Title :   Sustained Blood Pressure Responding during Synthetic Work.

Descriptive Note : Technical rept.,


Personal Author(s) : Ray,R L ; Emurian,Henry H

PDF Url : ADA115733

Report Date : 15 Jun 1982

Pagination or Media Count : 34

Abstract : In Experiment I, hour-long elevations in men blood pressure were elicited by the performance of a synthetic work task for both naive subjects and experienced subjects. Task-elicited changes in heart rate failed to reach significance although split-half reliabilities of both heart rate and mean blood pressure were high during task performance. Significant correlations were observed between performance effectiveness and cardiovascular response magnitude that differed in sign between experienced and naive groups. These data indicated the utility of the synthetic task for the study of sustained blood-pressure elevations elicited by work performance. In Experiment II, task-elicited blood pressure, heart rate, and respiration rate were reliably and persistently elicited during five five-minute trials for two consecutive daily sessions. Blood pressure response magnitude declined slightly over trials for both sessions, and this diminution in magnitude was attributable toa gradual rise in baseline levels. Examination of trial-by-trial data and the between-session correlations for baseline and response magnitude values suggests that task-elicited blood pressure and heart rate responses, and to a lesser extent respiration rate responses, constitute a highly stable system which changes slowly, if at all, with practice. (Author)

Descriptors :   *Blood pressure, Heart rate, Respiration, Work, Performance tests, Response(Biology)

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE