About half stated that they had been and subsequently started a strict low-carbohydrate, high-fat routine. The different women and men continued with a high-carbohydrate weight loss plan. Everyone’s meals had been matched when it comes to what number of energy, relative to physique weight, they ate.
Before the diets kicked off, although, the researchers drew blood from the athletes earlier than and after a exercise, to ascertain their baseline bone well being and different markers of their well being and health. (The experiment was designed to take a look at many parts of the ketogenic weight loss plan in sports activities.)
Bone is an energetic tissue, continuously breaking down barely and transforming itself in response to the calls for we place on it. Knowing this, the researchers checked for the degrees of particular substances within the athletes’ blood identified to be related to bone breakdown, rebuilding and general metabolism.
Then the athletes launched into three and a half weeks of intense coaching, whereas consuming principally fats or principally carbs. Afterward, the researchers once more drew their blood and rechecked the markers of bone well being.
They discovered variations. The markers of bone breakdown had been larger now among the many athletes on the keto weight loss plan than firstly of the examine, whereas these indicating bone formation and general metabolism had been decrease. These identical markers had been usually unchanged within the high-carb athletes. The athletes on the ketogenic weight loss plan, in different phrases, confirmed indicators of impaired bone well being.
How their bones might need been affected by their consuming continues to be unclear, says Louise Burke, the pinnacle of sports activities diet on the Australian Institute of Sport in Canberra and one of many lead authors of the brand new examine.
“We believe that the keto diet may affect bone metabolism due to the downstream effects of low-carbohydrate availability on certain hormones, along with other factors,” she says. But extra examine, after all, is required.