Title page for ETD etd-06102009-063023
|Type of Document
||Hemesath, Susan M.
||Effects of acute aerobic exercise on cardiovascular reactivity to stress in healthy, untrained males
||Master of Science
||Health and Physical Education
|Southard, Douglas R.
|Denbow, Donald Michael
|Herbert, William G.
|Humphrey, Reed H.
|Date of Defense
This investigation assessed the effects of acute
aerobic exercise (AE) on cardiovascular reactivity (CVR) to
a non-exercise stressor. Nineteen untrained, healthy male
volunteers were stratified on diastolic blood pressure (DBP)
response to the cold pressor test (CPT), then randomly
assigned to either a minimal exercise condition (5 min of
freewheel cycling) or 30 min of exercise on a bicycle
ergometer at 55-60% V02max. Heart rate (HR) and BP were
monitored during the resting, arousal, and recovery phases
of the CPT at 1 hr, 3 hr, and 24 hr post-exercise. Results
revealed statistically non-significant response and recovery
effects; however, two important trends emerged. The 30
minute exercise group exhibited a tendency toward a reduced
DBP response to the CPT during the 1 hour post-exercise
session (p=0.08) and SBP response to the CPT was lower in
the 30 minute exercise group at 3 hours post-exercise
(p=0.08). These findings provide only minimal support for
the effectiveness of 30 minutes of AE at 55-60% V02max in
attenuating physiological response to the CPT in untrained
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