Post-exercise left ventricular dysfunction measured after a long-duration cycling event

BMC Research Notes

Alejandro Legaz Arrese⁴  Cristina Baquer Sahún²  Pilar Catalán Edo⁴  Silvia Izquierdo Álvarez¹  Daniel Cremades Arroyos⁴  Marta López Ramón³  Enrique Serrano Ostariz⁴ 

[1] Servicio de Bioquímica Clínica Planta 3a, Edificio de Consultas Externas, Hospital Universitario Miguel Servet, Calle Padre Arrupe, s/n, Zaragoza 50009, Spain;Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain;Cardiology Service, Hospital Universitario Miguel Servet, Zaragoza, Spain;Physical Education and Sports Section, Universidad de Zaragoza, Zaragoza, Spain

关键词: Strenuous exercise;    Prolonged exercise;    Cardiac biomarkers;    Cycling event;   

Others  :  1142595
DOI  :  10.1186/1756-0500-6-211

 received in 2012-11-26, accepted in 2013-05-21,  发布年份 2013

【 摘 要 】

Background

In this research, an extension to our previous work published in the Clinical Journal of Sports Medicine in 2009, we studied subjects that differed in terms of age and training status and assessed the impact of prolonged exercise on systolic and left ventricular diastolic function and cardiac biomarkers levels, recognized as identifiers of cardiac damage and dysfunction. We also assessed the possible influence of event duration, exercise intensity and weight loss (dehydration) on left ventricular diastolic function.

Findings

Ninety-one male cyclists were assessed by echocardiography and serum biomarkers before and after the 2005 Quebrantahuesos cycling event (206 km long and with an accumulated slope of 3800 m). Cardiac function was assessed by echocardiography and cardiac biomarkers were assessed in blood serum. Echocardiograms measured left ventricular internal dimension during diastole and systole, left ventricular posterior wall thickness during diastole, interventricular septum thickness during diastole, left ventricular ejection fraction and diastolic filling. The heart rate of 50 cyclists was also monitored during the race to evaluate exercise intensity. Echocardiograph results indicated that left ventricular diastolic and systolic function decreased after the race, with systolic function reduced to a significant degree. Left ventricular ejection fraction was below 55% in 29 cyclists. The decrease in left ventricular systolic and diastolic function did not correlate with age, training status, race duration, weight loss or exercise intensity.

Conclusions

Left ventricular systolic and diastolic function was reduced and cardiac biomarkers were increased after the cycling event, but the mechanisms behind such outcomes remain unclear.

【 授权许可】

   
2013 Serrano Ostariz et al.; licensee BioMed Central Ltd.

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