Effect of Low-Carbohydrate-Ketogenic Diet on Metabolic and Hormonal Responses to Graded Exercise in Men

November 19, 2014

Summary:

The following information was written by Atkins professionals.

This study evaluated the effect a ketogenic diet had on the exercise capacity of eight healthy men. Subjects were placed in either a mixed diet group or a ketogenic group. The ketogenic diet consisted of 50% of calories derived from fat, 45% from protein and 5% from carbohydrate. After three days on the diet, subjects performed an exercise test in which they worked out at varying intensities. In comparison to subjects on the mixed diet, those on the ketogenic diet displayed increased maximal oxygen consumption (the amount of oxygen taken in by the lungs per minute, which is an excellent predictor of overall fitness). Moreover, the ketogenic subjects showed a decreased respiratory exchange ratio, meaning more fat was burned for energy. Finally, the ketogenic group showed a shift in the lactate threshold toward higher exercise loads. When the amount of lactate in the blood reaches a certain level at a certain intensity, performance is impaired; this point occurred after a longer duration of time at a higher intensity level of exercise. Blood lactic acid levels before and after exercise as well as blood pH were also lower. The ketogenic diet also lowered insulin concentration. The authors concluded that a short-term ketogenic diet does not impair, but in fact increases, aerobic exercise capacity, as indicated by an elevated maximal oxygen consumption and elevated lactate threshold.

Commentary:

The following information was written by Atkins professionals.

These findings can be applied to the Atkins Principle of Good Health. Carbohydrate controlled nutrition can improve athletic performance.

Learn More About Low Carb Articles & Research

The Guide to Atkins Bars

Learn about Atkins most popular protein bars and how they can help support your low carb lifestyle or reach your weight loss goals. Between a busy work week or a hectic schedule at home, trying to reach your nutrition goals can feel like another chore on your to-do list. That’s why finding quality protein bars to

Read More »

35 Easy Keto Dinner Recipe Ideas

Keto Beef Recipes | Keto Pork Chop Recipes | Keto Chicken Recipes | Keto Shrimp Recipes | Vegetarian Keto Recipes | Keto Soup Recipes | Keto Crockpot Recipes | Keto Air Fryer Recipes | Keto Instant Pot® Recipes Whether you’re just getting started with keto or need some new additions to your recipe rotation, it’s

Read More »

20 Keto Breakfast Recipes & Ideas

Keto Breakfast Smoothie Recipes | Keto Breakfast Sandwich Ideas | East Keto Breakfast Recipes with Eggs | Keto Breakfast Casserole Recipes | Keto Breakfast without Eggs Following a ketogenic diet doesn’t mean you should skimp on a delicious breakfast or eat the same thing every day. In fact, Atkins’ take on keto diets emphasize optimal

Read More »