Demographical (age, body mass index), training (training experience, volume and intensity), competition (finishing time, relative intensity) and biochemical variables (blood lactate, creatine kinase and CK-MB) were assessed as predictors of EICF. EICF was determined as a reduction >5% of either left ventricular global longitudinal strain (LVGLS) or right ventricular free wall strain (RVFWS). Participants were evaluated before and after the race using Doppler echocardiography and myocardial deformation analysis. Methods: Nineteen male recreational runners (42 ± 12yrs) participated in a 55-km trial race at moderate altitude (1,800–2,500 m). The present study aimed to assess the occurrence of EICF among recreational ultramarathon runners, as well as to determine potential predictive factors.
8Department of Cardiology, Sports Medicine Center, Spanish Sports Health Protection Agency, Consejo Superior de Deportes, Madrid, Spainīackground: Controversy exists on the actual occurrence of exercise-induced cardiac fatigue (EICF) with ultraendurance exercise, as well as on whether factors such as age or training status might predispose to this condition.6Physical Activity and Health Research Group (“PaHerg”), Research Institute of the Hospital 12 de Octubre (“Imas12”), Madrid, Spain.5I+HeALTH, European University Miguel de Cervantes, Valladolid, Spain.4Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain.3Cardiology Department, La Paz Hospital, Madrid, Spain.2Cardiology Department, CEMTRO Clinic, Madrid, Spain.
1Wolff Cardiology and Sport Medicine Institute, Mendoza, Argentina.Valenzuela 4,6, Emanuel Gonzalez-Dávila 1, Alejandro Santos-Lozano 5,6, Pablo Matile 7, David Wolff 1, Araceli Boraita 8 ‡ and Alejandro Lucia 4,6,*,‡ Picco 1 †, Leonel Díaz-González 2,3, Pedro L.
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