CROSSFIT SUFFOLK: Powered By SPARTAN PERFORMANCE

George Demetriou

May 2, 2017 at 8:29 am

Great question Bevin!

The study was done with men only. T the best of my knowledge there have not been any IF studies done with female humans. There has been studies done with male and female rats. The male rats did much better with IF than the female rats.

Read this: http://www.precisionnutrition.com/intermittent-fasting-women
Helen Kollias from Precision Nutrition (a nutrition company I have much respect for) explains the IF for Women issue very well.

My speculation is that ADF would be better for women and, if I understood the information correctly, it is absolutely imperative that women who use any form of IF take in what most would consider a high level of protein. Apparently women are far more hormonally sensitive than men when it comes to missing meals or altering their diet (energy balance).

We really need a human female study though.

I know of 2 people that used IF with outstanding results. To the best of my knowledge neither gentleman did IF for an extended period of time (longer than a year).

Another factor to consider is IF while crossfitting and in your case, crossfitting AND training for a marathon. The studies weren’t conducted with test subjects who engaged in intense metcons or hours of aerobic training. Both of these activities may have a negative impact on health and performance with an IF diet, especially for a woman, apparently. Of course a way to deal the metcon/aerobic training is to eat “normally” on training days and use IF on non-training days.

Hope this helps.

2 Responses

Bevin

May 2, 2017 at 6:08 am


Great article George. If I read it correctly, it was only IF they tested? And men. If so, do you think results would be similar for ADF and for women?
George Demetriou

May 2, 2017 at 8:29 am


Great question Bevin!

The study was done with men only. T the best of my knowledge there have not been any IF studies done with female humans. There has been studies done with male and female rats. The male rats did much better with IF than the female rats.

Read this: http://www.precisionnutrition.com/intermittent-fasting-women
Helen Kollias from Precision Nutrition (a nutrition company I have much respect for) explains the IF for Women issue very well.

My speculation is that ADF would be better for women and, if I understood the information correctly, it is absolutely imperative that women who use any form of IF take in what most would consider a high level of protein. Apparently women are far more hormonally sensitive than men when it comes to missing meals or altering their diet (energy balance).

We really need a human female study though.

I know of 2 people that used IF with outstanding results. To the best of my knowledge neither gentleman did IF for an extended period of time (longer than a year).

Another factor to consider is IF while crossfitting and in your case, crossfitting AND training for a marathon. The studies weren’t conducted with test subjects who engaged in intense metcons or hours of aerobic training. Both of these activities may have a negative impact on health and performance with an IF diet, especially for a woman, apparently. Of course a way to deal the metcon/aerobic training is to eat “normally” on training days and use IF on non-training days.

Hope this helps.

2 Responses

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