Studying Fasted VS Fed Exercise, Mitochondrial Biogenesis with Scientist Kristi Storoschuk
Aug 5, 2024
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Kristi Storoschuk, a scientist specializing in fasted versus fed exercise and mitochondrial biogenesis, shares insights from her transformative journey into exercise physiology. She delves into the critical role of fasting and exercise in mitochondrial function, dispelling myths around their relationship. Kristi also emphasizes a simplified dietary approach prioritizing protein and whole foods for optimal health. Moreover, she discusses the benefits of ketogenic diets for muscle metabolism, synthesizing how metabolic flexibility enhances overall well-being.
Metabolic flexibility is crucial for optimal health, enabling the body to efficiently switch between fat and carbohydrate fuel sources.
Regular exercise, especially resistance and high-intensity workouts, significantly enhances mitochondrial biogenesis and overall metabolic function.
Understanding lactate dynamics during exercise helps tailor training programs to improve metabolic efficiency and athletic performance.
Deep dives
Understanding Metabolic Flexibility
Metabolic flexibility refers to the body's ability to switch between burning fat and carbohydrates as fuel, depending on availability. For optimal metabolic health, the ability to rapidly transition from fat oxidation during fasting or low-intensity exercise to carbohydrate oxidation during higher intensity activity is crucial. This adaptation allows individuals to efficiently use stored energy, particularly in varying dietary conditions. Exercise plays a significant role in enhancing metabolic flexibility, with a focus on building muscle and engaging in high-intensity workouts effectively driving these adaptations.
The Importance of Mitochondrial Health
Mitochondrial function is vital to overall metabolic health as these organelles generate energy for cellular functions. Improved mitochondrial biogenesis, the process that increases the number and efficiency of mitochondria in cells, is achieved through regular exercise, particularly resistance training and high-intensity interval workouts. Mitochondria also influence fat oxidation and muscle performance, making their health a top priority for individuals aiming to boost their metabolic capacity. Incorporating activities that promote mitochondrial health should be a cornerstone of any fitness regimen.
The Role of Lactate as a Biomarker
Lactate serves as a key biomarker for assessing metabolic performance during exercise. As exercise intensity increases, lactate levels can help indicate the balance between lactate production and clearance, providing insight into an individual's fitness level and metabolic efficiency. A rising lactate threshold, or the point at which lactate begins to accumulate in the blood, suggests improved metabolic health and the capacity to burn fat more effectively during higher-intensity workouts. Understanding lactate dynamics can thus offer significant guidance for tailoring training programs to enhance athletic performance.
Exercise Intensities for Maximum Benefits
Engaging in high-intensity exercise is essential for maximizing calorie burn and improving metabolic flexibility. Short, intense workouts can be more effective than longer, moderate-intensity exercises in promoting adaptations that enhance the body's ability to utilize fats and carbohydrates efficiently. Resistance training, in particular, builds lean muscle mass, which increases metabolic rate and energy expenditure even at rest. Implementing varied intensity workouts, including exercise 'snacks' throughout the day, can optimize metabolic function and glucose control.
Dietary Strategies for Enhancing Metabolic Health
Prioritizing protein intake and whole food sources while minimizing processed foods is vital for maintaining metabolic health and preventing overeating. Consuming adequate protein supports muscle building and satiety, reducing the likelihood of excessive caloric intake. Adopting a low-carb or ketogenic approach can aid in weight management, but it's important to recognize that exercise also significantly influences insulin sensitivity. Therefore, combining dietary strategies with regular physical activity provides a comprehensive approach to improving metabolic flexibility and overall health.
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Hi friends! This episode is featuring Kristi Storoschuk! We discuss her research on fasted vs fed exercise, mitochondrial biogenesis and more!
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This podcast content does not constitute an attempt to practice medicine and does not establish a doctor-patient relationship. Please consult a qualified healthcare provider for medical advice and personal health questions.
Prior to beginning a new diet you should undergo a health screening with your physician to confirm that a new diet is suitable for you and to out any conditions and contraindications that may pose risks or are incompatible with a new diet, including by way of example: conditions affecting the kidneys, liver or pancreas; muscular dystrophy; pregnancy; breast-feeding; being underweight; eating disorders; any health condition that requires a special diet [other conditions or contraindications]; hypoglycemia; or type 1 diabetes. A new diet may or may not be appropriate if you have type 2 diabetes, so you must consult with your physician if you have this condition. Anyone under the age of 18 should consult with their physician and their parents or legal guardian before beginning such a diet. Use of Ketogenic Girl podcasts & videos are subject to the Ketogenicgirl.com Terms of Use and Medical Disclaimer. All rights reserved. If you do not agree with these terms, do not listen to, or view any Ketogenic Girl podcasts or videos.
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