A recent study by Australian researchers has revealed that vigorous
exercises can put a person’s heart at risk.
Andre La
Gerche from the Baker IDI Heart and Diabetes Institute, who is one of the
authors of the study, said: “This paper discusses the often questionable,
incomplete and controversial science behind the emerging concern that high
levels of intense exercise may be associated with some adverse health effects.”
“Given
that this is a concern that affects such a large proportion of society, it is
something that deserves investment. The lack of large prospective studies of
persons engaged in high-volume and high-intensity exercise represents the
biggest deficiency in the literature to date, and, although such work presents
a logistical and financial challenge, many questions will remain controversies
until such data emerge,” he added.
He said
that all therapies, pharmacological or otherwise (such as exercise), have a
dose-response relationship whereby benefits diminish at high doses and the risk
of adverse events increase.
Excessive
high intensity cardio can develop enlargement of the heart that leads to
something called diastolic dysfunction which can lead to heart failure. Intense
endurance exercise may be 'cardio-toxic' and cause permanent structural changes
in the heart. This, in turn, can leave some people more at risk of heart rhythm
problems, medically known as arrhythmias. It is a medical condition in which
the heartbeat of a person is irregular, too fast (above 100 beats per minute in
adults), known as tachycardia, or too slow (below 60 beats per minute), known
as bradycardia.
The
study revealed that just like overdose of medicine can cause damage to the
health, an overdose of exercise can also do the same.
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