Blood pressure and heart rate during rest-exercise and exercise-rest transitions |
| |
Authors: | K Baum D Eßfeld D Leyk J Stegemann |
| |
Institution: | (1) Physiologisches Institut der Deutschen Sporthochschule Köln, Carl-Diem-Weg 6, W-5000 Cologne 41, Federal Republic of Germany |
| |
Abstract: | Summary The transients of mean arterial blood pressure (
) and heart rate (f
c) during rest-exercise and exercise-rest transitions have been studied in six healthy sport students. After 5 min of rest in an upright position on a cycle ergometer they exercised for 15 min and remained seated for a further 5 min. The subjects exercised at four different constant intensities (40 W, 80 W, 120 W, 160 W) in random order separated by at least 24 h. The
was determined by a noninvasive and continuous method. During the first minute of exercise, three phases of response could be distinguished, with the first two showing no clear relationship to intensity. Phase 1 consisted of simultaneous increases in bothf
c and BP during the first 6 s. In phase 2,
decreased whilef
c continued to increase. During phase 3,
andf
c approximated constant values or a linear increase. Both parameters showed no comparable intensity-independent reactions during the off-transients. In conclusion, during the first 15 s of rest-exercise transitions there seems to be a fast and uniform cardiovascular drive which overrode other influences onf
c. |
| |
Keywords: | Exercise Humans Blood pressure Heart rate Transients |
本文献已被 SpringerLink 等数据库收录! |
|