Regional wall motion abnormalities after prolonged exercise in the normal left ventricle.
Why the study?
Does prolonged exercise induce regional wall motion abnormalities or left ventricular dysfunction in athletes?
Population
12 athletes with normal left ventricles participating in the Hawaii Ironman Triathlon
Comparison
Prolonged exercise vs Baseline (before the race)
Design
Cohort
Follow-up
1 day after race finish
Authors
Discussion
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Implication
Transient post-race LV dysfunction in athletes recovers within 24 h; hypothesis-generating for cumulative effects on myocardial remodeling.
Structured PICO
Does prolonged exercise induce regional wall motion abnormalities or left ventricular dysfunction in athletes?
P
Population
12 athletes with normal left ventricles participating in the Hawaii Ironman Triathlon
I
Intervention
Prolonged exercise (Hawaii Ironman Triathlon: 3.9-km swimming, 180.2-km bicycling, and 42.2-km running event)
C
Comparator
Baseline (before the race)
O
Outcome
Regional wall motion abnormalities and left ventricular dysfunction (measured by radial chord shortening and area ejection fraction)surrogate
Prolonged extreme exercise induces transient global and regional left ventricular dysfunction, particularly in the septum, which recovers within one day.
Cite This Study
Douglas et al. (1990) studied this question.