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Marnie's avatar

My comments here are as a competitive runner who ran the 1500m, 10k and cross country as a university student in Ontario, Canada.

Women are not mini men. Unfortunately, what I have observed for many years is the idea that women's physical anatomy is very similar to that of men, and therefore, that our training, diet and body fat composition as competitive athletes should be similar to that of men. Many coaches for women at the high school and university level are men who treat their female athletes as mini men.

In reality, teen girls often struggle with puberty and take a while to adjust to their menstrual periods and changing muscle / fat composition as they develop in the teenage years. Runners sometimes struggle with nausea during intense training and races. It is my observation that girls and young women struggle with this more than males. Most coaches are not accommodating of this reality and otherwise competitive female athletes drop out of running and track programs because of this.

In university programs, unrealistic expectations about BMI are placed on female athletes that force them to lower their BMI to unrealistic levels.

The physical anatomy of teen girls and women is optimized to have enough fat to nourish a developing fetus, and once the baby is born, to feed that baby until it can start eating regular food. In most parts of the world, babies are still breast fed until they are at least two years old.

I have a body mass index of about 20. It hasn't changed much since I was a competitive runner in the 1980s. I'm still a very fast walker and walk about five miles a day. When I was breastfeeding, I would get so ravenously hungry that I once ate an entire 1 pound salami in one sitting. Breastfeeding requires a certain amount of body fat and a nutrient rich diet. True that many women no longer breast feed, but that is what the female physical anatomy has evolved for: pregnancy and breast feeding.

When female athletes are asked to lower the amount of fat on their body to a level similar to men, coaches are asking athletes to fight against biology and evolution. Seems not worth it to me. On competitive sports for women, when we force them to adopt the physical anatomy of men, we've lost the plot about what athletics are really about.

Tom (TML) Wigley's avatar

From Tom Wigley. Is there any scientific evidence that body composition (BC) is related to performance (Perf) when sampling across a group of individuals ... or, more to the point, is there credible evidence that for any specific individual, d(BC)/dt is, with statistical significance, related to d(Perf)/dt? If not, then the focus on BC would be hard to justify.

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