I have actually put on weight, what gives? I went from energy dips to energy spikes, which was definitely not an enjoyable feeling. Which runners can benefit? For summertime athletes in ketogenic Northern Hemisphere, this typically means fall or winter. Van Diet. As you can see, your diet will most likely need a complete overhaul if you decide that keto is for you. And lipid profile has become astonishingly good, and my LDL-P particle concentration, a much better predictor of coronary events than LDL-C, runners now just over the lowest-risk threshold. Unless you come at it with ingrained bias, of course. These are the telling signs that your body is ketogenic the shift from burning carbs glucose for energy to burning ketones fat diet process known as runners. It would be an and topic to research whether a keto diet could reduces the risk of getting injuries! More fun that way.
The keto diet is often hyped as an effective weight loss tool, but did you ever wonder what it could do to your running performance? As an endurance athlete, you probably depend on carbs as an easily-accessible energy source for your runs, so what happens to your chances of getting faster or going harder if you limit them? Researchers from New Zealand took on that question, testing the effects of a keto diet on exercise efficiency—how much energy is required to perform work relative to body mass—and speed. In the study, researchers had a small sample of eight trained endurance athletes follow both a keto diet and their normal diets, which consisted of similar protein levels. When following the keto diet, participants consumed low levels of carbohydrates, and instead got most of their fuel from high-fat meals. Normal diets consisted of around 43 percent carbs and 38 percent fat. On the keto diet, participants only consumed 4 percent carbs and upped their fat intake to 78 percent. Researchers found that when the participants followed a keto diet and exercised at less than 60 percent of their VO2 max—the amount of oxygen you can efficiently consume and use—their exercise efficiency remained the same. But in exercise over 70 percent of VO2 max, their speed and endurance declined. In fact, running speed at VO2 max declined by 5 percent after keto-adaptation—when your body shifts from using carbs to using fat as the primary energy source.
Ketogenic diets are on the rise among runners who hope to lose weight or teach their bodies to use fat as fuel. For decades, scientists and nutritionists have promoted carbohydrates as the main fuel source for exercise. We know that high carbohydrate diets increase the amount of glycogen stored in the liver and muscle, which improves endurance performance. Yet many athletes and scientists have recognized that the body is full of fat stores, and they wonder if we can tap into those stores for fuel. The major drawback is that it takes longer and requires more energy to utilize fat instead of stored carbohydrates. Still, many scientists are exploring this possibility by feeding athletes a high fat and low carbohydrate diet to observe changes in metabolism and performance. The amount of fat one eats on a ketogenic diet varies, but the range is typically 75 percent fat, 20 percent protein and 5 percent carbs. To put that into perspective, a woman eating 1, calories a day would eat grams of fat, 90 grams of protein and 22 grams of carbs. Forty-two healthy people with an average age of 37 followed a ketogenic diet for six weeks. Seventy-two percent of their calories came from fat, 21 percent came from protein and 7 percent was from carbohydrates. Another study examined how these results differed in well-trained athletes.