1/17/2024 0 Comments Endurance advantage preferredThere are advantages to each “fuel,” but ideally, we can easily switch between the two without major mental or physical disruption. Our bodies have two major sources of energy: glucose (sugar) and fat. By understanding when and how these fuel sources are accessed, we can make choices that lead to greater endurance and better performance-in the gym and in everyday life. Tracking glucose levels can also help you optimize “metabolic flexibility,” your body’s ability to utilize different fuel sources. These adaptations are just part of the story, though. Exercise may also improve the function of pancreatic beta cells (which produce insulin) and insulin activity, increase the amount of fat we burn between meals, and increase the number of mitochondria we have in our cells (where the cell burns fat and glucose to make energy).Ī large body of research shows that the amount of exercise required to produce these benefits may be surprisingly low: Moderate aerobic activity for just 30 minutes at least 3 times per week over 8 weeks improves insulin resistance and glycemic control, including fasting glucose levels. The positive effects of exercise on metabolic fitness include an increase in glucose transporters traveling to the lining of cells (GLUT4 channels), allowing more glucose to enter and lowering circulating glucose-without additional insulin. Physical exercise–including walking, jogging, high-intensity interval training, and resistance training with weights-can change our cells’ ability to take up and utilize glucose, and in turn, increase our metabolic fitness. Exercise Leads to Healthier Glucose Levels
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