No more than 2.5 hours of jogging a week
Sport is healthy and keeps us fit. But how much physical strain can we put on our bodies? A study by Frederiksberg Hospital in Copenhagen (Denmark) showed that jogging too much is harmful to health. In the journal "Journal of the American College of Cardiology", the scientists write that an average of 2.5 hours per week should not be exceeded.
“People who are physically active have at least a 30% lower risk of death compared to those who are inactive,” the scientists report. However, this fundamentally positive statement is put into perspective if you take a closer look at your weekly sports workload.
The evaluation of the relationship between jogging and all-cause mortality in the current Danish study showed that mortality from intensive jogging is on a similar level to that of non-joggers. According to the scientists, light to moderate jogging from one to 2.4 hours a week was associated with the lowest mortality.
Intensive jogging increases mortality For their study, the researchers led by Peter Schnohr used the data from the "Copenhagen City Heart Study", in which 1,098 healthy joggers and 3,950 healthy non-joggers have been observed since 2001. They analyzed possible connections between the mortality and the intensity of the jogging, taking into account the pace, duration and frequency of running. The lowest mortality rate was found at a frequency of two to three times a week with slow to average walking pace, Schnohr and colleagues write.
However, according to the researchers, more than 2.5 hours of jogging per week go hand in hand with an increase in mortality, and in the case of intensive joggers who jog more than four hours a week at high speed, the mortality rate is statistically at the same level as that of the Non-joggers.
Light to moderate jogging recommended If a certain amount of jogging is exceeded, the health benefits are lost, according to the Danish researchers. Although the likelihood of potentially fatal diseases of the cardiovascular system (e.g. heart attack or stroke) is initially reduced by exercising, the risk obviously increases again when jogging intensely.
The Danish researchers therefore recommend light to moderate jogging in order to maximize the health benefits. The pace should never be set too high, the running units must not last longer than an hour and jogging more than three times a week is taboo. If these requirements are observed, jogging has significant positive health effects and significantly reduces the risk of death. (sb, fp)