2023-08-16 17:53:00
A study published in the British Journal of Sports Medicine correlates running, cycling or swimming as a child and a reduction in the development of nine types of cancer. More surprisingly, two types of cancer would be favored.
Run, swim and cycle to be healthy. A cohort study published Monday in the British Journal of Sports Medicine confirms the positive effects of sports training called “cardio”. More specifically, the benefits of it on the appearance of cancers during life when practiced during adolescence and early adulthood. A 42% decrease in the appearance of 9 types of cancer is correlated with this physical activity during this key period.
“This study shows that higher physical fitness in healthy young men is associated with a lower risk of developing 9 of 18 site-specific cancers studied,” point out the authors.
In the list of benefits noted, a reduction of around 42% in the occurrence of lung cancer, 40% less chance for liver cancer and 39% reduction for esophageal cancer .
Over a million Swedish men were followed between 1968 and 2005, for an average of 33 years. The study therefore focused on this group, and cannot possibly extend to women, as it stands. Among the subjects of the study, more than 84,000 men developed at least one cancer during their follow-up, or about 7% of the group.
Certain favored cancers?
Surprising element drawn from this study, a better form of the cardiorespiratory system seems to be associated with a higher risk of prostate cancer (+7%) and skin cancer (+31%).
Different factors could explain this phenomenon. First, better screening, as some cancers may simply not be detected due to a lack of examinations.
For skin cancers, exposure to the sun linked to the practice of outdoor sport could explain this correlation. According to the Swedish doctor Aron Onerup, interviewed by The Guardianprevious studies had already highlighted the link between regular exercise and the appearance of non-fatal prostate cancer.
However, a downside can blur certain results of the study. As Dr Claire Knight of Cancer Research UK points out, the study “does not fully take into account the effect of diet, alcohol and smoking, which are more likely to affect your risk of developing cancer”.
“No need to run a marathon”
Ultimately, the authors of this study point out that their results “strengthen the incentive to promote interventions aimed at increasing cardiorespiratory fitness in young people”. But what is the right dose of sport to practice?
“You don’t need to run a marathon or join a gym – anything that warms you up, makes you slightly out of breath and makes your heart beat faster counts,” Claire Knight told the Guardian.
The expert estimates that 150 minutes of exercise per week are necessary. But it can be brisk walking, cycling, or just cleaning up.
The French Ministry of Health has issued recommendations whose objectives vary according to age. “For adults, it is recommended to practice 30 minutes of physical activity developing the cardio-respiratory capacity of moderate to vigorous intensity, at least 5 days per week”. It is also advisable to avoid “staying 2 consecutive days without practicing [d’activité sportive]”.
For teens and children ages 6 to 17, authorities recommend 60 minutes of moderate-to-vigorous-intensity physical activity daily.
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