Mar 23, 2021
A Guide to Fat Intake for Athletes

For athletes, proper nutrition is the fuel for reaching peak performance.

An e-book, Nutrition Guide: Fueling for Performance by TrueSport, shared by, broke down the eight steps in building a strong nutrition plan for performing at your best. From carbohydrates to proteins to gut health, and vitamins and minerals, the 28-page booklet advises athletes on the ins and outs of nutrition.

fatBelow is an excerpt from the chapter ‘Fat as Fuel.’

Fat is the primary fuel for light to moderate-intensity exercise. It is a valuable metabolic fuel for muscles during endurance exercise and performs many important functions in the body, although it does not provide quick bursts of energy needed for speed.

The more efficient an athlete becomes in their respective sport, the easier it is for them to operate at a lower intensity while maintaining the same level of work or maintaining the same speed (metabolic efficiency).

At this lower intensity, stored fat in the muscle can be used as a fuel source. The average 150-pound athlete with 6% body fat carries 1,500-2,000 calories in the form of carbohydrates and more than 45,000 calories in the form of fat. Even for efficient endurance and ultra-endurance athletes, carbohydrates are still important, but stored fats help them reach the finish line.

Research has shown that metabolic adaptations do occur as a result of high fat fueling, although claims that high fat, carbohydrate-restricted diets improve performance in competitive athletes have not been proven.

This has significant implications for athletes in muscular endurance sports that require a burst of power, such as rowing, swimming, gymnastics, figure skating, judo, boxing, baseball, basketball, or soccer, to have energy generated aerobically.

It is important to recognize that there are many sources of fat in foods. It is present, but not separately visible, in:

  • Dairy products, such as cheese, whole milk, sour cream, and ice cream
  • Processed foods, such as chips, crackers, granola bars, and french fries F Cooked meats and fish
  • Other food sources like nuts or avocados

Other more obvious sources of fat are in products like margarine, butter, mayonnaise, salad dressing, oils, and meats with marbling or visible fat.

» ALSO SEE: The High School Sports with the Highest Risk for Head Injuries

Athletes should consume 20-35% of their calories from fat. Along with decreasing overall calories, increasing mono-unsaturated and n-3 polyunsaturated fats while decreasing consumption of saturated fat and sugar-sweetened beverages (soda) are the first steps toward losing excess body fat and improving metabolic function. Doing so may be a benefit to athletes by reducing inflammation and helping to maintain proper vascular function, which indirectly may support athletic performance.

To read the full e-book, Nutrition Guide: Fueling for Performance by TrueSport, click here

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