Continuous Glucose Monitoring (CGM) is gaining attention as a tool for optimising dietary counselling in athletes. By providing real-time glucose data, CGMs offer the potential to enhance our understanding of how athletes’ bodies respond to training, recovery, and nutrition. In our study, published in the European Journal of Sport Science, we investigated the use of CGMs in Para athletes to explore their potential applications and limitations.New study on CGM in Para cyclistsIn our study (1...| askerjeukendrup
When we recommend carbohydrate intake for the day, it is often expressed as grams per kg bodyweight. For example, for most sports this will be between 5 and 8 g/kg with values up to 12 g/kg on some days, in some sports. Protein intake is also expressed per kg body weight or per kg fat-free mass and this makes sense. However, when it comes to carbohydrate intake during exercise, recommendations are provided in grams per hour. A recent study challenged this view. Should we really change the recomm| askerjeukendrup
Glycogen is essential for high intensity exercise performance. A review concluded that elevated glycogen concentration can improve performance by 2-3% and endurance capacity by 15-25%. Muscle glycogen concentrations can be increased by eating a diet that is rich in carbohydrate. However, studies in the 70s suggested that extreme glycogen loading protocols resulted in very high muscle glycogen concentrations. These protocols employed combinations of high carbohydrate days, low carbohydrate days a| askerjeukendrup
After publishing my post Nutrition Science Initiative (NuSI) in retrospect, I received an email from Peter Attia, MD, the former president of NuSI, suggesting that I had gotten aspects of the story wrong due to a lack of additional context. Attia and I spoke twice by phone, and I think he has a point. I also had an additional conversation with Kevin Hall, PhD, one of the key researchers NuSI funded, for additional context from his perspective.| Stephan J. Guyenet, PhD
I recently had the opportunity to collaborate with Kevin Hall, PhD and Rudy Leibel, MD on a commentary in JAMA Internal Medicine (1). It was fun for me to work with two researchers who I respect tremendously. Hall’s energy balance modeling work has brought important new insights to the obesity research field and Leibel is, well, the co-discoverer of leptin. And he has done as much as anyone else to help us understand how this hormone works in humans.| Stephan J. Guyenet, PhD
