Training and Athletic Performance

How does a ketogenic diet affect performance?

At the onset of the diet, performance may become less than optimal. However, research has found that over time, these performance decrements disappear . Some studies, including those conducted in our lab, have even found that people following a ketogenic diet and resistance training can gain the same amount of strength compared to people eating high carbohydrate diets.

Will I lose muscle on a ketogenic diet?

Research suggests that keeping protein to around 1.2-1.6 grams per kilogram of body weight allows individuals to maintain or gain lean mass. Even among individuals in a calorie-restricted state, studies have found fat loss to be as high as 95 percent of total weight lost on a ketogenic diet, and consuming a ketogenic diet at maintenance calories leads to increases in muscle mass. The positive effects on muscle mass are due in part to the protein sparing and anabolic effects of ketones.

Should I do a targeted ketogenic diet (TKD) for performance?

Targeted ketogenic dieting involves incorporating carbohydrates around a training session (before, during, and/or after). By doing so, the adrenaline from the training session blunts the insulin response you would get from the carbohydrates (thereby preventing the negative, anti-ketogenic effects of eating carbs) but could potentially give you an acute cognitive effect . No studies have looked directly at a TKD, but individuals who are training hard have reported great benefits with this type of approach. Keep in mind that your particular goal (fat loss, muscle gain, performance, etc.) will determine what is optimal for you.

Regardless, we do not recommend attempting a TKD until you are thoroughly keto-adapted, and then we suggest that you start by experimenting with consuming a small amount of carbohydrates before, during, and/or after your workout (i.e less than 30 grams).

What type of exercise is best on a ketogenic diet?

Any exercise is better than no exercise! However, we have found in our lab that training at a high intensity can increase the production of ketones. So train hard and try to incorporate resistance training with some type of cardio, even if that cardio just is going on a walk after each meal.

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