#539: How Does Carbohydrate Availability Impact Resistance Training? – Cliff Harvey, PhD & Eric Helms, PhD

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Introduction

Some suggest that, since individual lifts or short-duration efforts don’t rely heavily on glycogen, carb intake might not be critical for strength athletes. If glycogen depletion isn’t a pressing issue, could athletes thrive on lower-carb diets without sacrificing performance? Or could there be overlooked benefits to having greater carbohydrate availablily in those sessions?

  • In strength sports and resistance training, do carbohydrates play an important role or not?
  • Are carbohydrates really necessary for resistance training?
  • How does training volume, intensity and goals impact the carbohydrate requirement?

In this episode, Dr. Cliff Harvey and Dr. Eric Helms offer their perspectives on this interesting and practically important issue.

Related resources

Timestamps

Guest Information

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Cliff’s master’s degree research focussed on the use of medium-chain triglycerides to mitigate ‘keto-flu’ and encourage faster induction of nutritional ketosis, and his doctoral research on identifying markers of carbohydrate tolerance and appropriateness of different diets to individuals.

Cliff Harvey, PhD
a registered clinical nutritionist and researcher.

Danny Lennon has a master’s degree (MSc.) in Nutritional Sciences from University College Cork, and he is the founder of Sigma Nutrition.

Danny is currently a member of the Advisory Board of the Sports Nutrition Association, the global regulatory body responsible for the standardisation of best practice in the sports nutrition profession.

Danny Lennon
MSc. in Nutritional Sciences from University College Cork

Introduction to this Episode

Some suggest that, since individual lifts or short-duration efforts don’t rely heavily on glycogen, carb intake might not be critical for strength athletes. If glycogen depletion isn’t a pressing issue, could athletes thrive on lower-carb diets without sacrificing performance? Or could there be overlooked benefits to having greater carbohydrate availability in those sessions?

In strength sports and resistance training, do carbohydrates play an important role or not?

Are carbohydrates really necessary for resistance training?

How does training volume, intensity and goals impact the carbohydrate requirement?

In this episode, Dr. Cliff Harvey and Dr. Eric Helms offer their perspectives on this interesting and practically important issue.

Useful Terminology for this Episode

Key Terms & Acronyms
Resistance Training: A form of exercise that involves muscle contraction against an external resistance, such as weights or bodyweight. The goal is to increase muscle strength, endurance, or hypertrophy.

Glycogen: A stored form of glucose found in the liver and muscles. Glycogen is the primary fuel used by the body during intense exercise and is replenished through carbohydrate consumption.

Ketosis: A metabolic state in which the body uses fat as its primary energy source, producing ketones in the liver. This typically occurs when carbohydrate intake is significantly reduced, and fat becomes the main fuel source.

Carbohydrate Restriction: A dietary approach that limits carbohydrate intake, o en to promote ketosis or reduce blood sugar spikes. This is common in diets like the ketogenic diet, where carbs are reduced in favor of fats and proteins.

Energy Availability: The amount of calories remaining for the body’s basic functions a er accounting for energy expenditure during exercise. Adequate energy availability is important for maintaining health, especially in athletes.

Dietary Patterns: The overall composition and quality of an individual’s diet over time. This includes the types of foods consumed, meal frequency, and the balance of nutrients, which can influence health and performance outcomes.

 

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