Impact of physical deconditioning on ventricular tachyarrhythmias in trained athletes
Alessandro Biffi, MD*,*,
Barry J. Maron, MD, FACC ,
Luisa Verdile, MD*,
Fredrick Fernando, MD*,
Antonio Spataro, MD*,
Giuseppe Marcello, MD*,
Roberto Ciardo, MD*,
Fabrizio Ammirati, MD ,
Furio Colivicchi, MD and
Antonio Pelliccia, MD*
* National Institute of Sports Medicine, Italian Olympic Committee, Rome, Italy
San Filippo Neri Hospital, Department of Heart Disease, Rome, Italy
Minnneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA
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Figure 1 Number of premature ventricular depolarizations (PVD), ventricular couplets, and bursts of non-sustained ventricular tachycardia (NSVT) during 24-h Holter electrocardiogram recording at peak training and after the period of deconditioning in 70 trained athletes.
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Figure 2 Effect of deconditioning on frequent and/or complex ventricular tachyarrhythmias in 70 trained athletes. C-V abn. = cardiovascular abnormalities; NSVT = non-sustained ventricular tachycardia; PVDs = premature ventricular depolarizations.
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Figure 3 Arrhythmia trends during 24-h Holter electrocardiogram (ECG) recordings showing marked reversibility of premature ventricular depolarizations (PVDs) after three months of deconditioning in a 32-year-old elite bobsledder. (Top panel) The 24-h ECG performed during peak training shows 3,288 PVDs, distributed relatively homogeneously, with a slight reduction evident during the evening hours. (Bottom panel) Marked reduction in ventricular arrhythmias (to 73 PVDs) is evident after three months of physical deconditioning. The reduction of ventricular arrhythmia after detraining has occurred throughout the 24-h recording period.
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