Regular physical training had a heart rate-independent beneficial effect on diastolic function (E/A ratio) that manifested primarily in older males (>31 years).
Cross-Sectional (n=1,237)
Does regular physical training improve the E/A ratio independently of resting heart rate in males?
Regular physical training has a heart rate-independent beneficial effect on left ventricular diastolic function (E/A ratio) that manifests primarily at older ages.
UNLABELLED: To clarify whether the higher E/A quotient of male athletes is a favourable change in the intrinsic relaxation properties of the left ventricle. METHODS: Peak early (E) and atrial blood flow velocities (A) were assessed by Doppler echocardiography at rest in 1237 males (939 athletes) in Hungary. Data were collected between 1993 – 2009. Relationship between E/A and resting heart rate (HR), was determined by linear regression analysis. RESULTS: The E/A decreased with age, the rate of decrease was slower in the physically trained subjects, except in children. In children, adolescent-young and young adult subjects E/A against HR equations of the athletic and nonathletic groups were similar, differences between the means were only due to the differences of the HR. In the 31 – 44 yr old males, the intercepts of the athletes' regression lines were higher. The oldest (>44 yr) active subjects showed a significant regression while sedentary males did not. CONCLUSIONS: The HR-independent beneficial effect of regular physical training on the diastolic function manifests itself at the older ages. The impact of resting HR should always be taken into consideration when assessing intergroup differences in the E/A ratio, especially when studying the effect of exercise training upon cardiac function.
Kneffel et al. (Thu,) conducted a cross-sectional in Healthy athletic and non-athletic males (n=1,237). Regular physical training vs. Sedentary lifestyle was evaluated on Relationship between E/A ratio and resting heart rate. Regular physical training had a heart rate-independent beneficial effect on diastolic function (E/A ratio) that manifested primarily in older males (>31 years).
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