As a sports performance coach, you’re well-versed in creating training plans and guiding your athletes to success. However, are you providing them with the metrics they truly crave? Our survey revealed that athletes are highly interested in 3 specific metrics, which most coaches often overlook. Here are these 3 metrics, along with tips on how to collect and use them to enhance athlete performance.

INSCYD partner Triathlon Training Academy
Image: INSCYD partner Triathlon Training Academy

Help us spread the word on these essential metrics for athlete performance! Share this article with fellow coaches and athletes, and together, let’s revolutionize the way we train.


Discover how simple it is to gather these 3 essential metrics and see the significant impact they can have on both you and your athlete’s performance.

By the end of this article, you’ll learn how to collect these metrics without investing in expensive testing equipment. But first, let’s delve into the 3 metrics athletes want to know, according to our survey (completed by INSCYD users and non-users).

1. Carbohydrate combustion during training and racing

Over 75% of athletes in our survey expressed their interest in knowing the amount of carbohydrates they burn during training and racing. This information is vital as running out of carbohydrates can mean the end of an athlete’s performance in a race.

Do you have this data on your athlete? If so, do you share it and apply it to their sports nutrition plan?

INSCYD coaches simply use the training zones to see how much carbs are burned per hour in a certain training zone (image 1). If they want to dive into the details, they use the Carbohydrate combustion graph, which is available for both power and speed/pace sports (image 2).

INSCYD coaches can easily monitor carbohydrate combustion per hour in different training zones (image 1). For a more in-depth analysis, they can use the Carbohydrate Combustion Graph, available for both power and speed/pace sports (image 2).

INSCYD training zone with carbohydrate combustion
Image 1 - INSCYD enables you to create your own training zones. In this example we created a template that shows carbohydrate combustion in [g/h].

Understanding your athletes’ carbohydrate combustion is crucial for you as a coach. To learn more about this, read our article on How carbohydrate combustion determines pacing and fueling.

2. Fat combustion during training and racing

74% of athletes also want to know their fat combustion rate during training and racing. High fat combustion is associated with high endurance performance. The ability to burn fat effectively helps conserve carbohydrates, delaying fatigue in endurance events.

Some athletes may also be interested in fat combustion for weight loss purposes.

Once again, INSCYD training zones can provide the rate at which your athlete burns fat, which enables you to determine the zone 2 training intensity, used by professional cyclists. For a detailed view, use the Fat & Carbohydrate Combustion Graph:

Fat & carbohydrate combustion graph
Image 2 – Fat and carbohydrate combustion, for all intensities. Also available for speed/pace based sports. INSCYD coaches can hoover over the image to get the exact numbers.

Read our fat combustion article and download three hacks to increase FatMax: FatMax definition, training (zone), and exercise test.

Unlock the secrets of carbohydrate and fat combustion, and create winning fueling strategies for your athletes. Schedule a free 1:1 consultation with our INSCYD experts today in your own language and stay ahead of the competition. Our experts will help you optimize training for maximum results. Hurry, spots are limited

3. Fueling strategy: when and how much should you eat

More than two-thirds of athletes want a tailored fueling strategy for training and racing.

Creating a plan is simple. Combine carbohydrate combustion numbers with the amount of carbohydrates stored in the muscles (glycogen), as provided by INSCYD, to determine the exact energy your athlete needs to consume.

Infographic: pacing and fueling nutrition with INSCYD carbohydrate combustion data
Infographic: pacing and fueling nutrition with INSCYD carbohydrate combustion data

Download our whitepaper and learn how to create a fueling and pacing plan.

How to easily get the metrics

You probably think you need a metabolic cart (VO2 analyzer) to get the carbohydrate- and fat combustion data. Indeed, this is one way to do it. 

However, with INSCYD it’s possible to get the metrics with whatever test protocol you prefer, using only a GPS watch (running), or power meter (cycling), or lactate analyzer, or VO2 analyzer. Test in the field or in a lab, remote or together with your athlete. However you want to test, we make sure you get a full metabolic report with lab-level accuracy.

Differentiate yourself from coaches who are not able to give their athletes what they want to know. Start by learning more about the INSCYD test, results and pricing: INSCYD test: protocol, results, cost and more.

Stop guessing and start creating precise, personalized fueling strategies for your athletes! Book a free consultation with our INSCYD experts today, and learn how to optimize fueling strategies for maximum performance. Act now, time is running out! 

Why Are These Metrics Important for Athlete Performance?

Understanding carbohydrate and fat combustion rates, along with creating a personalized fueling strategy, can significantly impact an athlete’s performance. Here’s how:

  1. Improved Sports Nutrition: By knowing the amount of carbohydrates burned during training and racing, coaches can create tailored nutrition plans to ensure their athletes have enough energy to sustain their performance.
  2. Enhanced Endurance Training: Understanding fat combustion rates allows coaches to design training programs that improve an athlete’s ability to utilize fat as a fuel source, helping them conserve carbohydrates and delay fatigue in endurance events.
  3. Customized Fueling Strategy: A well-planned fueling strategy helps athletes know when and how much to eat during training and racing. This prevents them from running out of energy or experiencing gastrointestinal issues due to overconsumption of food or sports drinks.


As a sports performance coach, your primary goal is to help your athletes reach their full potential. By focusing on these three essential metrics—carbohydrate combustion, fat combustion, and fueling strategy—you can significantly improve your athletes’ performance in sports nutrition and endurance training.

Using tools like INSCYD, collecting and analyzing these metrics becomes a straightforward and accessible process, allowing you to make well-informed decisions that lead to better results for your athletes.

If you found this article insightful, share it with your network and help others unlock the power of these crucial metrics for athlete performance. Let’s make a difference together! 


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Don’t let your athletes settle for anything less than their absolute best. Book a Free Demo with INSCYD today and experience firsthand how you can elevate your coaching game.



Athletes why train with generic plans when you can have a program tailored to your unique physiology? INSCYD is the key to unlocking your full potential. Find your dedicated INSCYD coach or lab here. 

Already have a coach? Experience INSCYD in action with your coach and redefine your training approach.

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