300 minutes of sport per week would reduce the risk of breast cancer

Doubler la durée hebdomadaire d'activités physiques de 150 à 300 minutes a un impact réel pour réduire le risque de cancer du sein chez la femme ménopausée.

Doubling weekly hours of 150 physical activity to 300 minutes a real impact in reducing the risk of breast cancer in postmenopausal women. 

A team of Canadian researchers has demonstrated that physical activity doubled from 150 to 300 minutes per week would influence to prevent the risk of breast cancer in postmenopausal women.

Researchers recently found that the body fat was associated with an increased risk of developing breast cancer after menopause.

Acting on reducing fat and this would reduce the risk of developing the disease.

This was highlighted a team of Canadian researchers led by Professor Christine Friedenreich, member of the Alberta Health Services in Edmonton, Alberta, Canada.

The results, published in the journal JAMA Oncology, showed that doubling the weekly duration of physical activities from 150 to 300 minutes had a significant effect to reduce body fat, especially in obese women, and by extension it also had a real impact in reducing the risk of breast cancer in postmenopausal women.

To achieve these results, the researchers followed for 12 months 400 postmenopausal women without disease, aged 50 to 74 years with a body mass index (BMI) between 22 and 40. Then two groups were formed.

Assumptions 100 supported by epidemiological studies

The first had to do 150 minutes of exercise per week, the other 300. The selected activities are the treadmill and the elliptical.

In detail, these studies have shown that the average reductions in body fat 1kg were higher in the group who practiced 300 minutes in sports than the group that was in 150. These decreases were specifically recognized in the abdominal subcutaneous fat, total abdominal fat, waist circumference and waist-hip ratio.

“A likely association between physical activity and postmenopausal women risk of developing breast cancer is supported by more than 100 epidemiological studies with a strong biological rationale to support the hypothesis that fat loss is an important mediator of this association even if this is not the only one. This study provides us with elements to encourage postmenopausal women to do at least 300 minutes of sport a week, “concludes Dr. Christine Friedenreich

Study reference:. oncology.jamanetwork .com / article.aspx? articleid = 2396584

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