A team of scientists from the Frederiksberg Hospital in Copenhagen, Denmark has studied the effects of jogging on human health for more than 12 years.
The study involved 1,098 healthy joggers and 413 healthy people who did not jog and who had more sedentary lives.
The researchers analyzed how frequent and how many hours that participants jogged daily. The participants were also questioned about their pace perception and if they were hard or light joggers.
According to the data analyzed by the researchers, the participants who engaged in excessive jogging had approximately the same life span as the ones who did not jog.
The participants who were classified as excessive joggers ran at a speed of seven miles per hour, for more than four hours weekly.
The subjects who were classified as excessive joggers had an increased risk of dying due to the strenuous exercise.
The study excluded the participants who were diagnosed with health conditions like heart disease or diabetes.
The excessive runners were mostly young women and men who had a healthy body mass index and a normal blood pressure. They participants were not smokers and had a lower risk of developing diabetes. The researchers said the joggers were of “optimal health”.
Jacob Marott, from the City Heart Study in Copenhagen, explained that joggers who moved at a slow pace faced a 49% lower risk of dying, compared to the participants who did not jog at all. The participants who jogged at a slow or average pace had a 62% decreased risk.
The researchers explained that an “average pace” means five miles per hour, while a fast pace means running at a speed of more than seven miles per hour.
The study showed that those who jogged at a higher speed had a 6% lower risk of dying.
The scientists wrote in their report that strenuous exercise may cause pathological changes of the arteries and the heart, if done on a long term.
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