Short sprints (30s) attenuate post-prandial blood glucose in young healthy males.

Aims: Low-volume, high-intensity exercise is a time-efficient method of inducing physiological responses and may also improve glucose homeostasis. Therefore, effects of two different volumes of sprint-interval cycling on post-prandial blood glucose were assessed.

Methods: Twenty healthy young males undertook two Wingate anaerobic tests (2WAT), four Wingate anaerobic (4WAT) and without-exercise (CON) 90 min after eating a standard meal.

Left ventricular myocardial strain and strain rates in sub-endocardial and sub-epicardial layers before and after a marathon.

We assessed myocardial deformation in sub-endocardial and sub-epicardial layers of the left ventricle (LV) wall before and after running a marathon. Echocardiography scans were performed on 14 male, non-elite runners (mean +/- SD; age 32 +/- 10 years) who completed the 42.2-km London marathon.

Evidence of increased electro-mechanical delay in the left and right ventricle after prolonged exercise.

We assessed the time delay from the onset of QRS (Q) to peak systolic (S') and diastolic (E') tissue velocities in the left (LV) and right ventricle (RV) before and after prolonged exercise. Nineteen well-trained runners (mean +/- SD age, 41 +/- 9 years) had tissue-Doppler echocardiography performed before and after an 89 km ultra-marathon race. Longitudinal tissue motion was analysed in LV basal and mid-wall segments and RV free wall.