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What really happens when we ingest a pre-workout drink mix?


Sample Size of One Series - UCAN SuperStarch versus 

Go ahead and check the ingredients on your pre-workout energy drink, gel, or fuel source you use for marathon, triathlon, weight lifting training.

Do the ingredients read sugar cane, sucrose, fructose, dextrose, maltodextrin?

If so, you are ingesting high glycemic carbs and simple sugars.

When ingesting a pre-workout drink before your training or racing session, your body is most likely in a rested state. So, we were curious to see how the body responds in a rested state.

This project is not a scientific study, rather a story worth sharing from a 'sample size of one'. We realize a number of limitations with this story, however, as Richard P. Feyman once said “the first principle is that you must not fool yourself, and you’re the easiest person to fool".

To ensure we are not fooling ourselves, we realize there is a lot of information telling us what, how, why, and when we need to consume pre-workout energy sources before training and racing. To understand the basic science and provide plain language explanations, we hooked up Kevin at Smart Performance Nutrition with a continuous glucose monitor to see what the first 30-90 minutes look like when  ingesting different sport endurance energy carbohydrate drinks.

Please note, Kevin was medically supervised throughout this testing.  

Just so you have some background about how Kevin, our Sample Size of One, prepared. He fasted for 10 hours after dinner, and then in the morning consumed 50g of carbs from one energy source. The continuous glucose monitor he used was a Dexcom G5®, This device uses a small sensor measuring glucose levels just underneath the skin, while a transmitter fastened on the top of the sensor sends data to a wireless mobile device.

Dexcom UCAN SuperStarch energy test

The energy products he used are shown below.

UCAN SuperStarch glucose comparison

Here is what one test looked like.

UCAN Canada Glucose test 1

Interested to know the energy source? Check out Part 2! 

Smart Performance Team

www.smartperformancenutrition.ca