Abstract
Reports the results of studies that investigated the relationship between loudness, reading speed, preference of material, type A behavior pattern and the cardiovascular reactivity (CVR). The present investigation addressed this issue by asking 15 type A (mean=20.5 years old) and l 6 type B subects (mean=21.5 years old) to read (1) subvocally in self=paced, (2) subvocally in stressed speed, (3) aloud in self-paced and (4) aloud in stressed speed. Subjects chose reading materials both they like and dislike. Systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR) were measured noninvasively using JENTOW-7700 every 5 s. Results indicated that SBP and HR response to reading aloud showed a significant rise from reading subvocally. Speed stress produced larger response than self=paced condition in SBP and DBP. Type A subjects showed larger HR in disliked reading task than liked one when reading aloud. In contras, type B subjects showed larger HR in disliked reading task than liked one when reading subvocally. These findings are discussed in light of earlier studies conceming physical and mental stress reactivity on cardiovascular system.
