Exploring the Freestyle Libre 2: An Accredited Exercise Physiologist’s Journey with Continuous Glucose Monitoring

What is a Continuous Glucose Monitor (CGM)?

A continuous glucose monitor (CGM) is a device used to track glucose levels in real-time, providing detailed insights into glucose trends and patterns. It’s particularly useful for people with diabetes, as it helps them manage their blood sugar levels more effectively. Unlike traditional finger-prick tests, CGMs offer a continuous stream of data, which can be crucial for making informed decisions about diet, exercise, and medication.

The Freestyle Libre 2: Setup and Experience

The Freestyle Libre 2 is a popular CGM that offers a user-friendly setup and reliable glucose monitoring. To set it up, you simply apply the sensor to the back of your upper arm using the provided applicator. The sensor is designed to be worn for up to 14 days, continuously measuring glucose levels and transmitting the data to a compatible device for easy monitoring.

An Exercise Physiologist’s Perspective

As an Accredited Exercise Physiologist (AEP) who works with diabetic clients, I was intrigued by the potential of using a CGM, despite not having diabetes myself. I’m a runner, and understanding my glucose levels could provide valuable insights into my performance and overall health.

My Personal Experience with the Freestyle Libre 2

Although the Freestyle Libre 2 is meant to be worn for 14 days, mine unfortunately fell off after just 5 days. Despite this, the experience was enlightening. The sensor was surprisingly unobtrusive; I barely noticed it during daily activities. The only times I was aware of it were in the shower when I accidentally bumped it while washing under my arms.

Insights from My Glucose Data

During the time I wore the CGM, I stayed within the target range (3.9mmol/L to 10.0mmol/L) 99% of the time. Interestingly, a bag of Maltesers and a ham salad sandwich on white bread caused noticeable glucose spikes. However, an apple pie with cinnamon did not spike my glucose levels as much. This could be due to cinnamon’s known effect on improving insulin sensitivity.

As a runner, I found that exercise, even with the use of energy gels, did not significantly impact my glucose levels. This was a reassuring discovery, confirming that my body effectively manages glucose during physical activity.

Conversations with Other Users

In discussions with other CGM users, I gathered varied perspectives. A pharmacist mentioned that the readings weren’t always accurate, highlighting the need for occasional verification with traditional methods. A diabetic client found the Freestyle Libre 2 life-changing, as it eliminated the need for frequent finger pricks. Another user, not diagnosed with Type 1 diabetes, expressed frustration about the cost, as they had to pay $110 per sensor due to ineligibility for NDSS subsidies.

Diabetes and Exercise: A Powerful Combination

Diabetes is a chronic condition where the body either cannot produce enough insulin (Type 1 diabetes) or becomes resistant to insulin (Type 2 diabetes). Exercise is a powerful yet underutilised tool in managing diabetes, particularly Type 2 diabetes. Regular physical activity helps improve insulin sensitivity, lower blood sugar levels, and manage weight—key factors in controlling diabetes.

Conclusion: The Value of CGMs

In my professional opinion, the Freestyle Libre 2 and similar CGMs are fantastic tools for anyone needing to monitor their glucose levels continuously. Beyond managing diabetes, they serve as excellent educational tools for athletes and anyone interested in understanding their body’s glucose responses. For those in Newcastle looking for support in managing diabetes through exercise, consulting with an Accredited Exercise Physiologist can be a game-changer.

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