Why the study?
Does the QT interval exhibit rate-independent shortening (hysteresis) during stages of exercise in healthy subjects?
Does the QT interval exhibit rate-independent shortening (hysteresis) during stages of exercise in healthy subjects?
QT hysteresis occurs during exercise in healthy individuals, primarily driven by shortening of the first component of the T wave rather than terminal repolarization.
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No immediate change to exercise ECG interpretation; hypothesis-generating for repolarization dynamics in arrhythmia research.
Kannankeril et al. (2008) studied this question.
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