One of the most important effects of training – the slowing of the heart rate at rest (bradycardia) as a manifestation of the economization of cardiac activity and a lower need for hospitalization of oxygen. The increase in the duration of a phase of diastole (relaxation) provides more cots and best supply the heart muscle with oxygen. In patients with bradycardia cases of CHD detected much less frequently than in people with frequent pulse. It is believed that the increase in resting heart rate by 15 beats/min increases the risk of sudden death from heart attack by 70% – the same pattern is observed when muscle activity. When the standard load
on a Bicycle Ergometer in the trained men, the volume of coronary blood flow is almost 2 times less than in untrained (140 vs. 260 ml/min per 100 g of myocardial tissue), respectively 2 times and less need for hospitalization of oxygen (20 to 40 ml/min per 100 g tissue). Continue reading
The symptoms of heel injury — and how to treat a bruised heel?
Bruised heel – this is a fairly common injury that you can easily get a failed landing from a jump or a fall of a heavy object. Since this pathology is accompanied by pain, it cannot be ignored.
Injury is called closed damage tissues without significant disruption of their structure. Under the heel injury understand quite a common injury that is often accompanied by a dislocated joints, torn ligaments.
Causes of injury
To injury of the heel can be caused by variety of factors, but the most common are the following:
a bad landing after a jump;
walking or running on uneven surfaces;
classes in various sports;
walking up the stairs;
wearing shoes with high heels.
At risk usually Continue reading