Unlocking the Truth: The Surprising Impact of Ketone Supplements on Athletic Performance!

Ketone Supplements! Welcome! Today, we’ve got something fascinating to dive into— Recently, kinesiologists at McMaster University conducted a groundbreaking study to investigate the effectiveness of ketone supplements on athletic performance. Now, stick around because we’re going to break it down in simple terms. And yes, there’s a study involved, published in the International Journal of Sport Nutrition and Exercise Metabolism. Let’s get started!

So, what’s the deal with these Ketone Supplements, and why are they making waves in the exercise community? Well, a group of trained cyclists took part in a study where they consumed a special ketone drink before hitting the pedals. The idea behind it? To see if these supplements can boost performance. Spoiler alert: the results might surprise you!

Now, the study found that when these cyclists sipped on a ketone ester drink, their power output during a 20-minute cycling time trial actually decreased by about 2.4%. That might not sound like a lot, but it’s more than what was considered a significant difference before the study even started.

But why did this happen? It turns out that even though their blood ketone levels increased, their performance went the other way. The ketone supplement drink seemed to affect things like blood acid–base balance, heart rate, and perceived exertion.

Let’s unpack this a bit. The cyclists ingested a ketone ester, and although it bumped up their blood β-hydroxybutyrate levels, which is a fancy term for a specific type of ketone, it didn’t turn out to be the magic boost they were expecting.

There’s this idea that if you hit a sweet spot of 1 to 3 millimoles of β-hydroxybutyrate, it could be super beneficial. But guess what? Even though the cyclists hit around 2 millimoles, their performance still took a hit.

Now, here’s where it gets interesting. The cyclists’ heart rate during the time trial was lower after the ketone supplement drink. But hold on because interpreting heart rate data is like trying to solve a puzzle. It might be related to the lower power output or how they perceived the effort, which, surprisingly, didn’t differ much between the ketone and placebo drinks.

So, even though they were pushing less power and their heart rate dropped, they didn’t feel like the workout was any easier. It’s a bit of a head-scratcher!

Oh, and let’s talk about the belly situation. Some studies have hinted at gastrointestinal distress with ketone supplements, and this one didn’t escape it either. The cyclists reported a bit more discomfort, especially in the upper gastrointestinal tract, after sipping on the ketone supplement drink. But hey, it wasn’t a showstopper. On a scale from 1 to 10, it was around a 1. Not too bad, right?

Now, about our blood buddies—pH and glucose. Before the exercise, the cyclists who had the ketone supplement drink showed no change in blood pH, but there was a slight drop in blood bicarbonate and total CO2. What does that mean? It suggests a bit of stress on the body’s acid–base balance.

When it comes to glucose, the levels dropped before exercise, but interestingly, during the workout, there was no significant difference between the ketone and placebo groups. It’s like a rollercoaster for your blood sugar!

So, what can we take away from all this? Well, despite the hype, chugging down a ketone drink before your workout might not be the secret sauce for everyone. In fact, in this study, it seemed to hinder the cyclists’ performance rather than boost it.

Now, remember, this is just one piece of the puzzle. We need more studies to connect the dots and figure out how these ketone supplements really work and who might benefit from them. If you’re curious about the nitty-gritty details, you can find the full study in the International Journal of Sport Nutrition and Exercise Metabolism.

And there you have it, folks! Another deep dive into the world of fitness and nutrition.

Glossary:

  1. Kinesiologists: Scientists or researchers who study human movement and body mechanics, particularly in the context of exercise and physical activity.
  2. Ketone Supplements: Products designed to increase the levels of ketones in the body. Ketones are molecules produced during the breakdown of fats and are an alternative energy source to carbohydrates.
  3. McMaster University: A reference to the institution where the kinesiologists conducted the study, indicating McMaster University.
  4. International Journal of Sport Nutrition and Exercise Metabolism: An academic journal where the study on ketone supplements and athletic performance was published. It indicates a peer-reviewed source for scientific research in the field.
  5. Ketone Ester Drink: A beverage containing ketone esters, a type of compound that can elevate blood ketone levels.
  6. Power Output: The amount of energy produced or the work done per unit of time, often measured in watts in the context of exercise.
  7. Blood Acid–Base Balance: The equilibrium between acidic and basic components in the bloodstream, which can affect various physiological processes.
  8. Perceived Exertion: Subjective assessment of how difficult an exercise or physical activity feels.
  9. β-Hydroxybutyrate: A specific type of ketone, often referred to as a ketone body, and a key indicator of the state of ketosis.
  10. Millimoles: A unit of measurement used to express the concentration of substances, in this case, the concentration of β-hydroxybutyrate in the blood.
  11. Gastrointestinal Distress: Discomfort or issues related to the digestive system, often including symptoms such as bloating, discomfort, or upset stomach.
  12. Blood pH: A measure of the acidity or alkalinity of the blood.
  13. Blood Bicarbonate: A blood component that helps maintain acid–base balance.
  14. Secret Sauce: A metaphorical term for a special or unique element contributing to success or effectiveness.
  15. Peer-Reviewed: Refers to evaluating a scientific study by experts in the same field before it is published to ensure its quality and validity.

Journal Reference:

Devin G. McCarthy, Jack Bone, Matthew Fong, Phillippe J.M. Pinckaers, William Bostad, Douglas L. Richards, Luc J.C. van Loon, Martin J. Gibala. Acute Ketone Monoester Supplementation Impairs 20-min Time-Trial Performance in Trained Cyclists: A Randomized, Crossover Trial. International Journal of Sport Nutrition and Exercise Metabolism, 2023; 33 (4): 181 DOI: https://doi.org/10.1123/ijsnem.2022-0255