Key result
Mental challenge induced by emotionally charged film clips decreased right ventricular action potential duration compared to matched breathing control (193.8 ms vs 198.0 ms; P=0.004).
Why the study?
Does mental challenge induced by movie clips reduce action potential duration in conscious healthy humans independent of heart rate?
Population
19 conscious healthy human subjects
Comparison
Mental challenge induced by watching an… vs Matched breathing control without the movie clip
Design
Other
Authors
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Acute mental stress may shorten ventricular repolarization independent of rate; leaves open role in arrhythmia susceptibility.
Does mental challenge induced by movie clips reduce action potential duration in conscious healthy humans independent of heart rate?
Absolute Event Rate: 193.8% vs 198%
p-value: p=0.004
Mental challenge acutely decreases ventricular action potential duration in conscious humans independent of heart rate and respiration changes.
Child et al. (2014) studied Healthy (n=19). Emotionally charged film clip (mental challenge) vs. Matched breathing pattern without the movie clip was evaluated on Global right ventricular activation recovery interval (surrogate for action potential duration) (p=0.004). Mental challenge induced by emotionally charged film clips decreased right ventricular action potential duration compared to matched breathing control (193.8 ms vs 198.0 ms; P=0.004).
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