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Author Spotlight: Deciphering the Mysteries of Skeletal Muscle Fiber Types Using the MyDoBID Technique
Published on: September 22, 2023
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Fibre: The Forgotten Carbohydrate in Sports Nutrition Recommendations
Laura Mancin1, Louise M Burke2, Ian Rollo3,4
1Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK. L.Mancin@ljmu.ac.uk.
Sports Medicine (Auckland, N.Z.)
|January 8, 2025
Summary
Athletes should assess their daily fiber intake, aiming for approximately 30 grams daily to support gut health and performance. Gradually increasing fiber over six weeks can enhance microbiome diversity and intestinal function.
Area of Science:
- Sports Nutrition
- Gastroenterology
- Dietary Fiber Research
Background:
- Current athletic carbohydrate guidelines lack specific fiber recommendations.
- Fiber intake manipulation is common for gastrointestinal comfort and body composition goals in athletes.
- The interplay of fiber, protein, and overall health is crucial for athletes.
Purpose of the Study:
- To highlight the importance of dietary fiber for athletes.
- To propose a strategy for gradually increasing fiber intake in athletes.
- To underscore the benefits of adequate fiber for gut health and athletic performance.
Main Methods:
- Review of existing literature on fiber intake in athletes.
- Proposal of a six-week "ramp phase" to increase daily fiber intake to ~30g.
- Discussion of scenarios for manipulating fiber intake for specific athletic goals.
Main Results:
- Habitual fiber intake below 20g/day in athletes warrants intervention.
- A gradual increase to ~30g daily fiber intake supports gut microbiome diversity, intestinal barrier function, and short-chain fatty acid production.
- Fiber intake can be strategically manipulated for gastrointestinal comfort and body composition management.
Conclusions:
- Dietary fiber is a critical, often overlooked, nutrient for athletes.
- Gradual fiber intake increase is recommended for athletes with low habitual intake.
- Optimizing fiber intake can enhance gut health, performance, and body composition in athletes.
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