INSCYD'er and short distance runner Vanessa Scaunet during the European Championships Indoor, Torun 2021.

More and more running coaches use INSCYD to create better training programs and race pacing for their athletes. This blog covers the story of Vanessa Scaunet, who was able to switch her running goal from a 2k cross country to an 800m track race, within 10 days.

Cross country runner Vanessa Scaunet became an INSCYD’er when she performed an outdoor field-test in cooperation with the RUNNING AND MORE lab.

“Because of the test I can now prepare for the upcoming seasons and finetune my trainings to reach my goals!” – Vanessa Scaunet

USING INSCYD FOR RACE DEMANDS AND PREPARATIONS

At that time of her test, Vanessa was preparing for the National Championship cross country short distance: 2000 meters, a distance that is covered in around 7 minutes.

The power demand of such a race is approximately 5.7 W/kg or 2160 Joule/kg. The energy contribution however, differs per person. With Vanessa having a high VO2max and a medium VLamax, approximately 87% of the energy is covered by her aerobic metabolism and only 13% is covered by her anaerobic energy.

Because Vanessa had her metabolic profile in INSCYD, she and her coach where aware of how she produced the needed energy for a 2000m race and knew what her limitations are. For a race of almost 7min, an increase in VO2max would allow her to run faster. On the other hand, the (anaerobic) glycolytic power of the VLamax was already sufficient for a 7 minute race.

To increase VO2max and maintain VLamax, her coach chose specific interval training. Creating highly individual interval training is easy using the INSCYD lactate- and recovery graph

More about that in this blog.

“With INSCYD we were able to optimize her interval training because we knew the exact work-recovery ratio.” – Ivo Roelandt, trainer of Scaunet

PLOT TWIST

While Scaunet was preparing for a 2000 meter cross country, she received a phone call at the end of February, saying she was qualified for the European Championships indoor: 800 meters. A distance that is covered in just around 2 minutes.

The question arose: does it make sense to accept such an unexpected invitation 10 days before an event that is 3.5 times shorter in time length than what you are preparing for? Of course, Scaunet accepted the invitation to the European Athletics Indoor Championships — who wouldn’t?!  She not only accepted it because it is an honor to participate, but she knew she was able to race at a highly competitively level, thanks to the INSCYD test. How?

Predict running race performance

Luckily, Vanessa and her coach used the Performance Projection to get a better understanding of the race demands at the European Championships. The Performance Projection (see video below) allows a coach to simulate any race distance and any speed, based on the real metabolic profile of an athlete.

THE NEW RACE DEMANDS

To cover the 800m in around two minutes, her power output or total energy demand would be approximately 127% of what she was used to in the 2000m race.

Such a high power output equals an oxygen demand of about 83 ml/min/kg. However, Vanessa’s VO2max is in the mid 60s range.

The metabolic demand (oxygen demand) increases when running speed increases. The actual oxygen uptake depends on how well the aerobic energy system is developed. The difference between metabolic demand and energy production via the aerobic system is covered by the anerobic energy system.

“INSCYD shows how the aerobic system and the anaerobic [glycolytic] system interact, like no other standard test does.” – Ivo Roelandt, trainer of Scaunet

This means, almost 20 ml/min/kg of oxygen demand cannot be covered by her aerobic metabolism. Therefore, this needs to be covered by anaerobic – mostly glycolytic – energy. As a result, the aerobic energy contribution is decreased to approximately 72% (instead of 87% during the 2000m), while the anaerobic energy contribution is increased to approximately 28% (instead of 13% during the 2000m).

RACE PERFORMANCE PREDICTION

Knowing the new race demands was interesting, however Vanessa and her coach only knew those demands 10 days before the race. It was too late to change the training program, but predicting the future race performance offered great insight for future training! Let’s have a look.

The INSCYD lactate recovery and accumulation graph shows how fast lactate accumulates at any intensity. Knowing Vanessa’s profile, she is able to reach a maximal lactate concentration of approximately 13-14 mmol/L when fully exhausted. When dividing the maximal lactate concentration by the duration of the race, we know the maximal lactate accumulation rate.

For example, the cross-country race that Scaunet was preparing for at first would take about 7 minutes. With a maximal lactate concentration of 14 mmol/L, the maximal lactate accumulation rate may not exceed 2 mmol/L per minute (14 ÷ 7 = 2). Otherwise, she would hit the maximal lactate tolerance before the finish line.

The lactate recovery- and accumulation graph below, shows that the running speed (x-axis) at a lactate accumulation rate of 2 mmol/l/min (y-axis) is approximately 5.4 m/s.

Knowing this speed enables coaches to create a pacing strategy for a race and helps them predict (running) race performance.

The Lack of Pyruvate & Lactate accumulation graph shows how fast your athlete accumulates lactate (fatigue) at any given intensity. The lactate accumulation depends on the lactate production in the Glycolytic system (VLamax), lactate combustion in the Aerobic system (VO2max) and body composition

However, Vanessa now had to prepare for a 2 minute race. In our example, this would allow for a lactate accumulation rate of 7 mmol/L per minute (14 ÷ 2 = 7). By looking at the pace that matches this lactate accumulation rate, Scaunet’s trainer was immediately able to see whether this was a competitive pace. And it was…

This can be seen on the lactate curves that are created, using the performance projection in INSCYD. This shows a lactate curve for the 2000m and the 800m, using Vanessa’s already existing metabolic profile derived from her first INSCYD test. Using this graph, it is now pretty simply to read her speed at her maximum lactate concentration….

The lactate graph shows the lactate concentration (y-axis) at the finish, depending on running speed (x-axis) and distance.

Further improvements

The performance projection allows her coach to “play around” with her metrics as well. Instead of only projecting her performance for a yet unknown race, it is also possible to edit one or several of the metrics of her metabolic profile. He can then find out how much time she saves with a higher VO2max, how gaining or losing 1kg of body mass affects her race results, or what the maximum lactate concentration would be if she increases her VLamax by doing more anaerobic training.

All this can be answered BEFORE prescribing a training program or signing up for the next Championships.

European Athletics Indoor Championships – Torun 2021

Vanessa Scaunet survived the qualifications and made it to the semi-finals. She finished in 18th position at Europeans. We want to congratulate Vanessa Scaunet on her performance and thank the performance lab and her coach for sharing this story.

Want to know how you can better train and coach your running athletes, using INSCYD? Schedule a free personal demo now!

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The Ultimate Guide to Running Economy: How to Improve and Measure It

Improving running economy is probably the most efficient way to shave off minutes from your 10k or (half) marathon time. At the same time, it’s an overlooked metric that is often wrongly measured. That’s why it’s time for a change! This comprehensive guide covers everything you need to know about running economy (RE): from theory…

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VLamax: Elite Coaches Secret Weapon

VLamax: Elite Coaches Secret Weapon Are you a cyclist looking to sprint faster than Wout van Aert? Or a triathlete dreaming of racing with Jan Frodeno at the next Ironman World Championships? These may be hard goals, but a good way to start working towards them is to understand a very important metric of human…

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How To Apply The Norwegian Method To Training

The Norwegian Training Method is gaining attention after the success of Gustav Iden and Kristian Blummenfelt in triathlon. In this blog post, you will learn how to apply the Norwegian Method in 3 simple steps to increase your triathlon performance. We will discuss the training philosophy, how to control intensity with lactate measurements, and the…

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Jasper Philipsen celebrates Tour de France stage four win

The Power Behind a Tour de France Sprint Win: The Champs-Élysées

In the 2023 Tour de France, Jasper Philipsen, riding for the INSCYD partner Alpecin-Deceuninck team, has demonstrated his sprinting prowess by securing four stage wins and six podium finishes. Philipsen’s victories don’t stop there. He has been utterly dominant in the 2023 Tour de France, especially in the bunch sprints. Here’s what it takes to…

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TrainingPeaks vs INSCYD

TrainingPeaks vs INSCYD

This article talks about the differences between a training platform like TrainingPeaks and INSCYD performance software. We also show how teams like Alpecin-Deceuninck combine both tools to prepare their pro athletes for key races. *Although we compare INSCYD with TrainingPeaks, the same is true for other training platforms like Today’s Plan, AZUM, etc. Prefer watching…

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Undercover test: INSCYDs Power-Performance Decoder versus lab gold standard

Exercise Physiologist Tero Joutsen, PhD, rideson the treadmill during a 30min constant load test – the gold standard for validation of the maximum lactate steady state (AKA anaerobic threshold / FTP) Advertising claims are often designed to make more out of products than they actually are. INSCYD’s Power-Performance Decoder (PPD) software doesn’t have a claim.…

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Breaking 7 at “La Marmotte” – with INSCYD

Henrik Kraglund on his way to break the 7-hour mark at La Marmotte 2019 There are several badges of honour in the world of endurance sports. For some, it is running a marathon in less than three hours, or qualifying for the Ironman World Championships. For pure cyclists, on the other hand, it can be…

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mobile VO2 analyzers

How to Calculate and Measure VO2Max: Testing Outside a Lab

Discover how to measure VO2max without visiting a professional lab, utilizing field tests, sports watches, or online calculators. This article explains different ways to measure your VO2max without requiring expensive lab equipment. Let’s explore these methods and their precision in calculating your VO2 max. Image: INSCYD Partner COSMED Spread the knowledge! Share this article with…

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INSCYD partners with CANYON//SRAM

INSCYD partners with CANYON//SRAM

Salenstein, Switzerland / Leipzig, Germany. July 7th, 2022 INSCYD and CANYON//SRAM have signed a partnership agreement. INSCYD becomes the official performance software supplier of the women’s cycling team CANYON//SRAM. With fifteen riders from eleven different countries, CANYON//SRAM Racing is home to a diverse group of highly ambitious women. The team is currently racing the Giro…

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INSCYD partner Triathlon Training Academy

3 Key Metrics Athletes Want to Know: How to Collect and Use Them

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…

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INSCYD skiing test

Next level metabolic analysis in XC skiing

Just because INSCYD is well accepted in cycling – with partners like Team Jumbo Visma, Movistar and Alpecin-Fenix – doesn’t mean INSCYD is limited to cycling. In fact, the first INSCYD license purchased ever was in swimming – via the French Institute of Sports INSEP. If you are a coach, test lab or federation, who…

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For maximum performance: Belgian Cycling partners with INSCYD on a long-term cooperation

Salenstein, Switzerland. June 3rd 2020 . INSCYD and Belgian Cycling have just signed four-year cooperation agreement. This partnership includes all divisions of the national cycling association, i.e., INSCYD will support the disciplines road cycling, mountain biking, cyclocross, BMX and track cycling in their pursuit of maximum performance. Expert education for coaches After a several months long…

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Cycling at FatMax

Why FatMax is not the best endurance training intensity per se

There are many reasons why endurance athletes should want to increase their fat combustion. Riding many hours at FatMax (intensity at which you burn the most fat) might seem like the best way to do this. However, this is not always the case. It can even harm you and cause overtraining. Here’s what you should…

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Track runners how to increase or decrease VLamax

How to increase or decrease VLamax in running

In our previous article, we showed how to find out whether your runner should increase or decrease VLamax. Now it’s time to answers the final question: how to increase or decrease VLamax and How to increase VO2max in the meantime. By Benjamin Tilus Download full article in PDF Ben Tilus, National and State Champion coach…

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Graphic - How to qualify and prepare for IRONMAN Kona

How triathletes qualify and prepare for IRONMAN Kona

Many INSCYD athletes and coaches qualified and prepared for IRONMAN Kona, Hawaii. In this article we bundle their tips and tricks. Spread the knowledge! Share this article with your fellow coaches and athletes. Click the share buttons below and inspire others on their journey to athletic excellence. Facebook Twitter LinkedIn Reddit Email Table of Contents…

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Glycolytic Power in swimming : the missing link

Because of the relatively short duration of swim races, the anaerobic energy production plays a huge and significant role. It therefore makes sense to learn more about this race winning energy system, that not many coaches take into account. A French national team member gets his lactate sample taken after an exhaustive exercise to determine…

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Anaerobic threshold (FTP): why you might be overthinking it

How many times have you looked at your power meter or heart rate monitor and wondered if you were going too far above your threshold? Although it is reasonable not to kill yourself ‘just because’ when you’re out training and racing, you might be surprised by how little you actually know about one of the…

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Infographic - Improve Athlete’s Metabolic Profile Key Metrics & Strategies

Improve Your Metabolic Profile: Key Metrics & Strategies

So you received your metabolic test report and now wonder what you should work on to improve performance? Here’s how to discover potential room for improvement. We also show how you can calculate your ideal metabolic profile, depending on your goal. Afterwards you know exactly which metrics you should improve by how much. Spread the…

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Mastering the Monuments

Peter Sagen in Gent-Wevelgem 2018 The spring Classics season is already finished, a moment that always leaves cycling fans with a bit of sadness in their hearts. But for INSCYD and team BORA – hansgrohe the first quarter of the year has been a blast. Watching Peter Sagan winning his first Paris-Roubaix wearing the World…

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two athletes that are running in a triathlon race

Increase Triathlon Performance: 3 Effective but Uncommon Ways

Improving your VO2max or increasing your threshold is a time consuming process that we talk about all the time.  Not this time.  In this article we share 3 training tips that will increase your triathlon performance in a time efficient manner. Are you looking to increase your triathlon performance? Or maybe even preparing yourself for…

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Infographic - How to Increase VO2Max

How to Increase VO2Max: Techniques to Improve Performance

Increasing VO2max can be easy at first, but becomes challenging when you already have a decent training history. In this article we talk about all the advanced methods that improve VO2max. From training to nutrition. We also cover how to overcome a plateau in VO2max and common mistakes to avoid when trying to increase VO2max.…

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Infographic - Does VO2Max Really matter explanation?

Does VO2max Really Matter – Or Is It Overrated?

Scientists and coaches are openly questioning the importance of the most well-known performance metric in endurance sports – VO2max. This article answers whether VO2max actually matters for your sport performance. Let’s dive right into it! Spread the knowledge! Share this article with your fellow coaches and athletes. Click the share buttons below and inspire others…

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Combining running power (Stryd) with INSYCD - Sportograf

Use case: INSCYD x Running with (Stryd) power

In this use case, coach and sport scientist Florian Heck shares how he and his runners benefit from combining INSCYD software with (STRYD) running power data. Trail runner Josef. Source: Sportograf Florian Heck, coach and managing director at KickAss Sports, shares his story about testing and coaching an experienced trail runner, using INSCYD and STRYD.…

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Infographic 40-20’s: work-to-rest ratios in HIIT

40-20 Interval Workout: Work-To-Rest Ratios in HIIT

Are 40-20’s (40s ON 20s OFF) the best work to rest ratios in HIIT intervals? Or should you consider 30-30 Billat intervals? Both are common in endurance sports like cycling and running, and recent scientific literature shows why. Continue reading to learn more about work-to-rest ratios in HIIT training. Spread the knowledge! Share this article…

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