You’ve done these lactate tests countless times. Your triathlete steps onto the treadmill or bike ergometer, and you guide them through a standardized incremental test. Blood lactate is taken at regular intervals, plotted meticulously, and out comes the familiar curve. Based on this, you make individual training recommendations—or compare results to previous tests to evaluate progress.
It’s a well-established routine. In fact, this methodology has been around for nearly 50 years. But in an era where biomedical knowledge is expanding at breakneck speed—and where computing power and data analysis tools have evolved dramatically—should we really still be relying on a 50 year methodology that simply plots raw speed or power against lactate concentration? Wouldn’t we expect that after 50 years of research and evolution there must be a better way to do things?
In this article, we’ll take a deep dive into the three most common—and most overlooked—pitfalls in lactate profile testing for triathletes. And we’ll show you how to avoid them.
Watch our video. You’ll learn how to extract deeper insights from conventional lactate tests using just a handheld meter—and avoid misinterpretation that leads athletes down the wrong training path.
Let’s not forget what athletes are really looking for when they come in for a test. First and foremost: clarity and confidence. They want to leave knowing how to train better—and feel secure that their limited training time is being spent as effectively as possible.
Second, they want relevant benchmarks. Not just numbers on a curve, but data points that actually reflect performance in triathlon.
And third: progress. Did the training they’ve done since the last test lead to meaningful improvements? If so, great—double down. If not, it’s time to rethink the plan.
With a conventional lactate profile test, what do we actually get? Strip away the curve-fitting and threshold guesses, and we’re left with one concrete data point: power or speed at a given lactate concentration. Sure, we can try to interpret lactate curve shifts, shapes, or how deep the athlete pushed—but at the end of the day, it’s still just lactate plotted against external output.
And because this approach is so familiar—so entrenched—it rarely gets questioned. But let’s zoom out for a moment. Independent of any lab protocol, what are the real physiological benchmarks that matter in triathlon?
It’s not lactate concentration itself. What truly determines performance is how efficiently an athlete burns fat, how much glycogen they have in reserve, and how rapidly they burn through carbohydrates at race-specific intensities. These are the metrics that dictate pacing, fueling strategy, and ultimately, race-day performance.
And yet—none of this is captured by a conventional lactate test.
Let’s say you run a standard lactate test on a triathlete and measure a concentration of 4.1 mmol/L at a given power output. That number looks objective. Clean. Reliable. But here’s the catch: lactate is measured in millimoles per liter—and almost no one ever stops to ask liters of what?
Lactate doesn’t just float in space. It dilutes in the water compartments of the body—primarily in blood, organs, muscle and interstitial fluid. And here’s the problem: the total volume of that dilution space can change, especially in athletes who shift body composition through training. More muscle mass means more water. And more water means a larger dilution space.
Here’s how that plays out: imagine an example male triathlete, 70kg, 15% body fat, has around 18 kg of leg muscle actively working during a cycling test. At a given intensity, those muscles accumulate 135 mmol of lactate during the duration of that load increment of 5 minutes. If that lactate is diluted in 33 liters of body water, we get a concentration of 4.1 mmol/L. Straightforward.
But now imagine the same athlete spends a training block focused on swimming. He adds upper-body muscle—muscle that isn’t used in the cycling test, but still adds water to his body.
His physiology and performance on the bike hasn’t changed at all, but his total dilution space increases from 33 to 36 liters. Run the same test, and what do you get?
135 mmol of accumulated lactate but now divided by 36 liters = 3.7 mmol/L. The Lactate profile curve would shift to the right!
Same workload. Same Performance. Same Physiology. Same lactate accumulation in the working muscle. Different concentration—simply because the “pool” got bigger.
So what looks like improved cycling performance—a lower lactate at the same power—isn’t real progress. It’s just dilution. And because most testing protocols don’t account for body composition—or even consider how much muscle is involved in the test—it’s easy to draw the wrong conclusion.
To make matters worse, most lactate threshold concepts were validated in male cohorts with relatively consistent body composition. Apply those same assumptions to female athletes—or to athletes who shift muscle mass between tests, or age group athletes with a higher body fat percentage—and you’re working with a flawed lens from the start.
If you’re not accounting for dilution space, you’re not measuring adaptation. You’re measuring how full the bathtub is—without checking how big the tub actually is.
Athletes don’t come in for testing just to see numbers. They want reassurance. They want to know their training is working—that the long hours are pushing them toward their goal, not away from it.
Coaches and physiologists want the same: confidence that the plan is right and the athlete is progressing. And the most common way to check this? Look at whether the lactate curve shifted to the right.
But here’s the uncomfortable truth: that shift might be a lie.
Lactate concentration at any point during the test is the result of two opposing forces:
You can lower lactate concentration by producing less, or by burning more. Simple. But the conventional test doesn’t tell you which one happened. It only shows the result.
That matters—a lot. Say an athlete does months of low-intensity aerobic training. Their VO2max improves (a huge win). But, especially if the training done previously consisted also of some higher intensity training, now by turning to low intensity only the athlete might not recruit and thereby train those intermediate type muscle fibers anymore. These fibers lose their aerobic capacity and become more glycolytic.
More lactate is produced because of this, more is burned because of the improved aerobic capacity… yet the changes cancel out, and the curve doesn’t move. A coach might wrongly assume the training failed, when it actually improved the single most important performance metric – the VO2max of the athlete.
Or flip it: an athlete cuts volume, and both glycolytic and aerobic systems decline. But if lactate production dropped more than combustion? The lactate curve shifts to the right. It looks like progress. And now the coach draws the exact wrong conclusion: let’s keep going down this path. When in reality, the athlete’s endurance engine is shrinking.
And here’s the scary part: this isn’t theory. We’ve seen it happen to elite athletes—across sports and countries we are working with, athletes who followed the wrong signal from a lactate test. Not once, but over months or years. Each test reinforced a false narrative. Each training block is built on a mistaken belief. Until performance started slipping—and no one knew why.
If you’re using the lactate curve to track progress, but not understanding why it shifted, you’re flying blind.
So where does this leave us? If conventional lactate testing leaves us flying blind, what’s the alternative?
The good news is: you don’t need new equipment. You don’t need a metabolic cart. You don’t even need to change your protocol.
With INSCYD, all it takes is 3–4 well-chosen efforts—like the incremental lactate profile test you’re already doing. But instead of stopping at raw concentration values, we apply cutting-edge physiological modeling and mathematical analysis to decipher what really happened under the hood.
We break down the lactate concentration into its two root causes: production (via glycolysis) and combustion (in aerobic metabolism). You can finally understand why the curve shifted, not just if it did.
We also ask for one small, but crucial detail: body fat percentage. That lets us calculate the actual dilution space—the size of the “bathtub” your lactate is floating in—so you can interpret changes in concentration with scientific accuracy.
And here’s where it gets exciting. Because lactate combustion is proportional to oxygen use, we can also reverse-engineer actual VO2 values—including VO2max. That’s right: validated by peer-reviewed studies, this approach provides lab-grade VO2max values without a gas analyzer. No cumbersome metabolic carts. No six-figure lab setups. Just smart math and solid science.
But we don’t stop at oxygen.
Remember how we said carbohydrate and fat metabolism matter more than lactate for triathletes?
That’s exactly what we reveal. Lactate production is directly tied to carbohydrate usage and regulation of fat combustion (3)—so from that, we calculate carbohydrate combustion and fat combustion rates in grams per minute. Want to dial in race fueling? Now you can. Want to know FatMax—the intensity where fat burning peaks—and build training zones around it? We give you that too. Because when you know oxygen uptake, power output, and carb usage, you also know total energy expenditure—and from there, fat oxidation becomes fully visible.
All of this:
✅ Built on modern exercise physiology
✅ Backed by independent, peer-reviewed science
✅ Delivered through conventional test protocols you already use
It’s time to move beyond the 50-year-old habit of plotting lactate against workload. With INSCYD, you turn that simple lactate test into a complete metabolic fingerprint—so you can train smarter, fuel smarter, and track progress with confidence.
Science has evolved. It’s time your testing does too.
Ready to begin? If you’re not yet using INSCYD, book a free demo to take the first step toward integrating physiology-based training into your performance testing and coaching.
And if you’re an athlete, find an INSCYD-certified coach or lab.
Stop guessing. Start using real physiological data to individualize your clients training and drive consistent progress.
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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…
This webinar will teach you how to use a holistic approach, utilising biomechanics, aerodynamics, training and nutrition to tremendously increase the performance of a triathlete in no time. Learn how to use real world biomechanical analysis, nutrition strategies and efficient training programs to maximize value of your coaching and bike fitting service. High Performance Expert…
Before we move into 2026, we want to look back at 2025 and summarize the year in one place. Here’s our 2025 wrap-up. In 2025, we focused on three things: access, scale, and confidence. That meant lowering the barrier to start testing, enabling assessments that can run at scale to grow your business 24/7, and…
Power vs. Duration respectively Speed vs. Duration analysis has a long history in sport science.Power-Duration relationships have become very popular and also very useful in managing training & performance in endurance sports – particularly in cycling. It provides a relatively easy way to get an idea of the performance of an athlete. Watch the webinar:…
Want to reduce your VLamax so you burn less carbohydrates and increase your anaerobic threshold? Here are 5 training tips on how to decrease VLamax, talking about: training intensity, frequency and nutrition! PS you can also download the tips in PDF. Having a high VLamax will make you go faster in any sprint or attack*.…
Muscle Glycogen and Exercise: all you need to know Glycogen is the most important energy substrate during exercise, especially at higher intensities. Since most races require such high intensities, glycogen is important to every athlete who wants to be strong, fast and become a winner. Regardless of the intensity at which you exercise, at some…
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.…
For more than 50 years, lactate profile testing has been a central tool in endurance training. Graded exercise tests with incremental increases in speed or power, blood lactate measurements at each stage, and the resulting lactate curve are deeply embedded in the way endurance performance is assessed. The age of this concept alone does not…
Webinar HIIT vs Norwegian 4×4: The Science Behind Interval Prescription The interval you prescribe to improve VO2max could be quietly working against your athlete’s performance. And the reason is not the training — it’s who the athlete is. arrow-icon-down Book a Free Demo About the Webinar: Both HIIT and Norwegian 4×4 are proven to improve…
If you’re working with swimmers, you’re likely doing some kind of swimming performance testing on a regular basis?! (and if not you should consider starting it). Maybe you’re tracking swim times at set distances, using lactate strips poolside, or monitoring heart rate and RPE. Whatever your exact protocol, the goals are almost always the same:…
Olympic mountain biking coach Filip François reveals his coaching structure, which leads to proven top performance and coaching business success. When I started my coaching business together with my wife (two times cross country Olympian) we wanted to give our athletes the best coaching possible. We chose to use INSCYD, because we already worked with it during the…
Lift heavy is the number one tip that all female athletes in perimenopause and beyond can take on to stay strong and play to their best. Eat more protein is another. But what about those endurance goals that we love training for? How do you balance “going long” with doing strength and intensity? How do…
Olympic gold medal winners are physiological outliers per definition. But what truly sets these elite athletes apart from others? In this article we dive into the metabolic profile of Grace Brown, who won the female individual time trial in Paris. The 32.4km course of the individual time trial (ITT) was virtually flat. As Italian’s national…
DATE: 29 January | 7:00 PM CESt Journey to Paralympic Gold: USA Triathlon Coach Parker Spencer’s Strategy arrow-icon-down SEE INSCYD IN ACTION arrow-icon-down Download Free Guide About the Webinar: Success at the highest level requires more than just hard work—it demands precision, data, and a strategic approach. In this exclusive webinar, Coach Parker Spencer and…
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.…
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…
The last weeks prior to an important race event are crucial. Use the wrong training strategy, and all the hard work is lost. Manage your training the right way and you’ll boost your performance by a few percent. In this use case, Benjamin Tilus, National Champion Coach and Founder of XLR8 Performance Lab, shares how to…
Interval training is a highly effective way to improve your athlete’s performance, enabling to train at intensities that are too high to sustain for a long time. To create an effective interval training program, you need to consider the duration and intensity of both the interval and the recovery. In this step-by-step guide, we’ll show…
Chris Case and Trevor Connor of Fast Talk Laboratories performing an INSCYD test Salenstein, Switzerland / Boulder, Colorado, USA At INSCYD we celebrate all our new partnerships, and this is one we cannot keep to ourselves. We are happy to announce our new partnership with Fast Talk Laboratories! About Fast Talk and Fast Talk Laboratories…
INSCYD College: Bridging the Gap Between Sports Science and Real-World Training https://inscyd.com/wp-content/uploads/2024/09/Vmake-AI-Thumbnail-6.mp4 The role of a coach has evolved, requiring a much wider skill set. Today’s coaches need to master communication, understand psychological aspects, develop tactics and pacing strategies, and even handle business development to market their services effectively. With so many areas of expertise…
Werden ChatGPT und andere KI-Tools den menschliche Coach ersetzen? Hier sind 3 Möglichkeiten, wie man neue, innovative Technologien nutzen kann und sich gleichzeitig unersetzlich macht. Facebook Twitter LinkedIn Reddit Email Trainerwissen vs. ChatGPT Bevor wir uns mit den spezifischen Coaching-Qualitäten von ChatGPT befassen können, ist es wichtig zu verstehen, woher es sein Wissen bezieht. Laut…
Salenstein, Switzerland./ Colorado Sprints, USA January 12th, 2021. Two of the most innovative and best performing companies have joined forces. The coaching company Carmichael Training Systems (CTS) brings on board the analysis software and the unique training science tool INSCYD to support their performance diagnostic work. Carmichael Training Systems is the premier destination for world-class…
Many performance labs and coaches determine the anaerobic threshold based on a lactate concentration of 4 mmol/l during an incremental test. This article answers whether that is a valid method of assessing the anaerobic- or lactate threshold. Share this insightful article with athletes, coaches, and sports enthusiasts who can benefit from a deeper understanding of lactate…
If you’ve worked with endurance athletes or run tests in a performance lab, you’ve likely come across Lactate Threshold 1 (LT1). In this article, we’ll delve into LT1 by unpacking the most common misconceptions and pitfalls about it and how to avoid them. Plus, don’t miss the video where Sebastian Weber explains these common mistakes…
Over the past two decades, Functional Threshold Power (FTP) has become the cornerstone for determining training intensities and tracking performance progression in cycling, triathlon and endurance sports. At its core, FTP is an attempt to approximate the physiological phenomena of the maximal lactate steady state, which is usually derived from a lactate profile test. The…
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…
Zone 2 training is promoted as your go-to training intensity, whether you’re a professional athlete or simply looking for exercise health benefits. Zone 2 training gained popularity when the coach of Tour de France winner Tadej Pogačar revealed that his athlete spends 80% of the training days in zone 2. In this article we talk…
(Tägerwilen, Switzerland, 8 March 2019) – INSCYD, the world’s most advanced software for performance analysis, and SEG Racing Academy partnered up for the next three years. Talent Support & Identification SEG Racing Academy is an U23 development team that competes at continental level with the aim of educating and developing riders to the next step.…
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…
If you’re looking to run your best 5K race, National and State Champion coach Benjamin Tilus has a secret recipe for both beginners and professional runners. Follow these 3 steps to improve your performance and win your next race. Whether you’re a runner or a coach, this comprehensive guide to 5k race training is packed with valuable…
Whether you’re considering becoming a coach or are already an experienced coach, we honestly can’t imagine a better way to test our physiological software than by using it on yourself (as a coach) before using it on your athletes. That’s what coach Florian Heck, 28 years old from Tri2gether (Trier, Germany), did with INSCYD. INSCYD…
The highest VO2max ever recorded is by Junior World Champion Oskar Svendsen. He scored a whopping 96.7 ml/min/kg. Could he beat a multiple Tour de France winner? A recent scientific study by Dr Reinout Van Schuylenbergh answers this question, using the INSCYD software. The results will surprise you. If you are coaching or testing athletes,…
Peak and fade intervals are a key component in the training regimens of elite athletes. These Peak and Fade Intervals start at a very high intensity and gradually decrease, offering a unique approach to training. This article not only delves into the science behind Peak and Fade Intervals but also covers pre-loaded intervals, another effective…
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…
Join Benjamin Tilus, National Champion Coach and Founder of XLR8 Performance Lab, as he demystifies the art of race preparation with the revolutionary “hourglass” model. This transformative approach has been pivotal in securing the US National title and has the potential to redefine endurance training across sports. Join us for this transformative session and equip…
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…
Part 2 of the HIIT vs. Norwegian 4×4 Series | By Sebastian Weber, Founder of INSCYD & WorldTour Cycling Coach Key Takeaways HIIT and Norwegian 4×4 intervals do not only train the aerobic system. They also stimulate the glycolytic (anaerobic) system, with potentially unwanted consequences for endurance performance. VLamax utilization (the fractional use of glycolytic…
In this partner webinar with Azum, Sebastian Weber talks about creating efficient and effective training plans. Theoretical basics are linked with application examples from practice. Agenda Differentiating primary and secondary goals Timing, timing, timing: how long, how often, how many repetitions? Periodization & Structure: introduction use of macro-nutrients to make informed decisions about training &…
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…
In our previous article about Why the best track and field running coaches look beyond VO2max, we talked about the importance of knowing your athlete’s anaerobic power (VLamax). We showed that having a too low VLamax can easily cost you more than 5 seconds in an 800m race, while a too high VLamax can cost…
Diagnostics national coach Alexander Törpel (m.) works with fellow coaches Norbert Warnatzsch (l.) and Bernd Berkhahn (r.) at the Magdeburg federal base in Magdeburg. Digitization is also inevitable in the sport of swimming. In the field of sports science, it is now advancing particularly quickly in Germany since Dr. Alexander Törpel was appointed national coach…
Let’s be clear from the start: this is not about creating a training program based on experience, hearsay, or the latest trend you saw online. Too many programs out there resemble a random stew — a bit of sprint work here, some HIIT training there, mixed with threshold, FatMax, and Zone 2 sessions — without…
1) The metabolic origin of the anaerobic threshold. It is one of sports most used terms when it comes to endurance performance and the most important benchmark value. However, most people do not understand what it is and why it even exists. 2) Athlete performance profiling – beyond critical power testing. Critical power testing has…
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.…
When Eliud Kipchoge crossed the finish line at the INEOS 1:59 Challenge in Vienna, he not only completed a marathon in under two hours but also shattered a seemingly insurmountable human performance boundary. What made such a feat possible? We’ve delved into the potential physiology behind the 1:59 Challenge, and the findings are astounding… To…
Can you compare indoor lab tests with outdoor field test? The comprehensive results of a complete physiological assessment can help you to plan your training sessions and nutrition more effectively. It’s a necessity for elite runners and it’s even a good idea for recreational runners that are training for a specific time in an upcoming…
Want to race or run super long races, like the Race Across America, Cape Epic, Dirty Kanza or the Transcontinental? We’ve got you covered! As Certified Sports Nutritionist Coach Sofi Marin (INSCYD user since 2017) says: “During a 4-hour ride, you can underfuel and get away with it. However, during a 48-hour event, it’s essential…
Aya Sinay has raced as a triathlete in IRONMAN Kona (Hawaii) twice and has been a successful triathlete coach for over 10 years. In this article, she shares 3 important tips that all triathlete coaches should read. Get ready to boost your athletes’ performance and your coaching business. Spread the knowledge! Share this article with…
Webinar The “No Lactate Curve” – Lactate Testing If you do lactate testing, there is a very high chance you are underutilizing it. Do you create a lactate profile and lactate- or threshold-based training zones for endurance sports? If yes, you are missing out on most of the value this testing could provide.And if you…
https://youtu.be/Tl8OCWf-3YI When Mika Luoto – coaching monitor of the Finnish Triathlon Association – heard about INSCYD years ago, he was very skeptical. Will it add value? Is their field test without any lactate or oxygen measurement reliable? In this interview he explains how comparing his own lab test results with INSCYD results convinced him to…
A Functional Threshold Power (FTP) test is easy to perform, you only need a power meter. However, the insights you get from knowing your FTP are also limited. In this article we share what science has to say about FTP. We also introduce a very similar test protocol that gives you a full view of …
Live Session See Automated Metabolic Testing in Action — Full Session Recording Watch Sebastian Weber, WorldTour cycling coach and INSCYD founder, guide a live group metabolic test inside Velocity. See the full protocol in action — how athletes test themselves independently, how a complete 360° metabolic profile can be generated automatically — VO2max, VLamax, MLSS,…
Unf*ck Your Lactate Testing! Minimizing your testing effort while maximizing your results.Learn how to choose the right protocol, understand lactate dynamics and how to extract VO2max, VLamax, fat combustion & more from lactate your lactate tests. It’s time to unf…ck lactate testing! arrow-icon-down Book A Free Demo arrow-icon-down Learn more About the Webinar: Do you…
Join us for an exclusive webinar where we’ll delve into the secrets behind Team Sportforum‘s success in the ‘Rad-Bundesliga’ opener in Schweigen. Guided by Luke Derksen, Head of Performance, we’ll discuss the strategies and methodologies employed to elevate the team to the status of the best amateur cycling team in Germany. Learn from their real-world experiences…
The way training zones are determined and used hasn’t changed for decades, as if nothing happened in sport science lately. It’s time to throw them out of the window and start creating training zones that actually matter. Let’s start right away. TRAINING ZONES MOST COACHES USE – AND WHY IT’S TIME FOR A CHANGE Currently,…
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…
This case study is about an 800 meter National Swimmer who is not able to keep up with her teammate during training and racing. Observations and lactate measurements seem to indicate she needs to improve her aerobic energy system, but this turns out to be a false assumption. Read the article and register for the…
In the quest for Olympic glory, USA Triathlon’s Project Podium has partnered with INSCYD, a leader in exercise physiology analytics, to revolutionize the training of America’s top young male triathletes. Head Coach Parker Spencer shares insights into this groundbreaking collaboration, aiming to turn potential into podiums at the 2028 Los Angeles Olympics. Watch Parker Spencer…
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…
FatMax: definition, training (zone) and exercise test Whether you like cycling, running or any other endurance exercise: knowing your FatMax zone will enable you to train your fat oxidation and boost your endurance performance. This blog contains everything you need to know about FatMax. From theory to practical application. Let’s dive right into it! WHAT…
Salenstein, Switzerland. September 26th. INSCYD — the world’s most advanced software for performance analysis — has signed a three -year contract with the Pro Continental cycling team Corendon-Circus ahead of the next cycling seasons. INSCYD will provide the team with its cutting-edge technology for performance analysis. The team’s Performance Manager Kristof De Kegel — who has…
Body composition in performance testing: stop ignoring it Body composition is highly important in athletic performance and performance testing. Although often ignored, body composition goes beyond weight and body fat. In lactate testing for instance, concentrations are expressed in mmol lactate per liter (mmol/L). But do you know which “liter” it is about? Let’s dive…
(Tägerwilen, Switzerland, 2nd September 2019) –Double Olympian Brendan Reilly joins INSCYD to develop partnerships with coaches and athletes worldwide INSCYD — the world’s most advanced software for performance analysis — has announced the appointment of double Olympian Brendan Reilly as its new Partnerships Manager. Reilly, who competed at Olympic level in high jumping for over…
How often should you do an exercise test? And maybe even more important: when should you do such a sports performance physiology test? Read it in this blog or click here to start listening to the podcast! In the Faster Podcast by FLO, Sebastian Weber talks about how often athletes should perform a metabolic test…
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…
Some refer to zone 3 training as sweet spot training while others call it the grey zone. This article reveals what zone 3 training is and when you should or shouldn’t implement it into your endurance training program. Spread the knowledge! Share this article with your fellow coaches and athletes. Click the share buttons below…
Whether you are an athlete, a coach, a national federation or a lab: starting to use INSCYD is easy and affordable. In this blog we briefly sum up what is necessary to join INSCYD. You are an athlete? Read how you can schedule your first INSCYD test! You are a coach or lab? Read what…
James (39) is self-employed, working long hours and having to fit training in around his demanding physical job. His results had plateaued and he was finding it difficult to structure his training and balance his work/life commitments. As a result, he was struggling to improve his performance enough to warrant the time and energy necessary…
This article shows how to reverse-engineer a swim season with a simple, field-proven lactate protocol (easy submax sets plus one all-out) already used by elite programs such as the Swedish and German Swimming Federations and USA Triathlon. We explain, at a coach-friendly level, how INSCYD models lactate production vs. clearance, accounts for distribution/kinetics, and derives…
You invested many training hours and money in your next IRONMAN triathlon. You sacrificed social and family life. On race day, you hope all comes together. But how can you be sure? Read this article to prevent hitting the wall or underperform. Learn exactly when to accelerate, recover, eat and drink. Are you ready for…
This case study is about a National Cross-Country (XC) Skier who is not able to keep up with his teammate during training and racing. Field observations and lactate measurements seem to indicate he needs to improve his aerobic energy system, but this turns out to be a false assumption. COMPARING 2 CROSS COUNTRY SKI ATHLETES:…
Carbohydrate and fat combustion rates are among the most important features INSCYD can offer for runners, triathletes, and cyclists. Here’s why: While fat combustion rates are a valid marker to monitor training progress and set training intensity zones, carbohydrate combustion is crucial not only in training – but even more in a race. Carbohydrate storage…
You know the protocol by heart. The cyclist clips in, settles in position and starts pedaling through an incremental test. You draw blood at each stage, track lactate levels, and chart the curve. Soon enough, you’ve got the classic profile: power vs. lactate concentration. From there, you estimate thresholds, prescribe training zones, and maybe even…
Profile-Based Training: Tailoring Strategy to Athlete Profiles for Peak Results Case Study with National Champions Discover how to use data-driven, profile-based training to achieve peak performance. In this exclusive webinar, Ben Tilus, National and State Champion coach, will share real case studies of three national champions, revealing how to tailor training strategies based on individual…
Iceland is often associated with geysers, volcanoes, cold water and a generally hostile landscape. Although it’s an island, you hardly think of Iceland as a swimming country or destination. But even this remote country, home to more than 300,000 inhabitants, has its own swimming federation – the Sundsamband Íslands, SSÍ. And its swimmers have already…
For years, Functional Threshold Power (FTP) has served as the default method for setting training intensities in endurance sports. Appealing for its simplicity, FTP is derived from a relatively easy field test—bypassing complex lab procedures. Over time, widely adopted training frameworks tied specific “zones” to percentages of this single metric. One such framework defines Zone…
Lactate threshold 1 (LT1) – also known as the aerobic threshold – is not to be confused with LT2 or anaerobic threshold, as LT1 occurs at a lower exercise intensity. LT1 may not get as much attention as LT2, but it’s still a popular ingredient of famous cycling, running, and triathlon training methods. This includes…
In this blog, Certified Sports Nutritionist Coach Sofi Marin (INSCYD user since 2017) explains how she translates INSCYD data into specific nutrition advice. After all, who knows better how to use INSCYD than an INSCYD user? Translating INSCYD insights into specific nutrition advice With INSCYD, I have clear and specific data to support and justify…
THE PROVEN WORKFLOW TO INTEGRATE TESTING SERVICES INTO YOUR COACHING BUSINESS – AND BOOST ATHLETE RETENTION You’re not the first coach or testing provider to feel unsure about how to turn testing into a consistent, value-adding part of your business. Maybe you’ve wanted to start offering testing but never felt entirely clear on how to…
Tabata workouts, a type of high-intensity interval training (HIIT), are named after Dr. Izumi Tabata, who compared the effects of these intervals to moderate-intensity endurance training in a scientific publication (1996). The original Tabata workout only takes 4 minutes and boosts your VO2max and anaerobic capacity. Check out our in-depth guide on understanding and improving your VO2max.…
DATE: 30 july | 5:00 PM CEST Master Race-Day Pacing and Nutrition for Endurance Athletes Learn the proven 4-step system that eliminates race-day disasters by creating precise, metabolic profile-based pacing strategies and calculating exact carbohydrate timing for Ironman, ultra-trail, and grand fondo events. arrow-icon-down download free E-book About the Webinar: Stop watching your athletes hit…
More and more people are waking up to a powerful truth: longevity isn’t just about living longer—it’s about living better. Staying active, sharp, and independent deep into old age has become a personal mission for millions. But slowing aging or wanting to age well is not the same as knowing how. And while fitness trackers,…
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…
You’ve done these lactate tests countless times. Your triathlete steps onto the treadmill or bike ergometer, and you guide them through a standardized incremental test. Blood lactate is taken at regular intervals, plotted meticulously, and out comes the familiar curve. Based on this, you make individual training recommendations—or compare results to previous tests to evaluate…
Free Demo The 7 key takeaways you will get from 4-Day Hands-on Physiological Testing & Coach Education Camp If you are not sure if these camps are for you or if you just want some key takeaways summarized – we have you covered. Join our free webinar and learn 7 key takeaways from the upcoming…
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Lactate accumulation & recovery Accumulation of lactate is associated with fatigue and time to exhaustion during hard exercise. The time an athlete needs to recover from such an accumulation and the intensity he or she can handle during this are crucial for success in some sports like cycling and football. Furthermore knowledge about accumulation and…
Zone 4 training, also known as threshold training, is used by the world’s best triathletes and marathon runners. But the true training effect of zone 4 training is not as straightforward as many coaches and athletes think. This article covers the science and practical applications of zone 4 training. Spread the knowledge! Share this article…
The German Swimming Federation (Deutscher Schwimm-Verband, DSV) and INSCYD have announced the extension of their successful partnership, a collaboration that has already led to groundbreaking results for German swimming on the world stage. By combining physiology-driven insights with tailored training protocols, INSCYD’s software has been instrumental in shaping the Federation’s athletes for top-tier performance—and the…
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…
Florian Wellbrock has continued to make waves in the swimming world with his recent achievements. He pulled away for an 18.7-second win in the Open Water 10K at the World Championships, showcasing his dominance in the sport. This win was Germany’s second in two 10K races in Fukuoka, marking a significant milestone for the country…
This webinar is about Training Zones and the new INSCYD Training Zone Builder (part 1). Watch the webinar: Agenda timestamps: [02:55] What are training zones and what are they used for: benefits and downsides [11:10] Examples of training zones in different sports and countries [19:40] Translating training zones to real life training: the challenges with…
In this blog, Sport Scientist Dylan Lindsey shares how he coached Sarah Gigante towards the National TT Championships. He specifically dives into the benefits of using the Lactate: Recovery & Accumulation graph. Ready to learn how to become a national TT champion? Let’s start! Sarah Gigante: National TT Champion 2021 After a long hiatus from…
Christoph Strasser broke the world record for 24h non drafting by riding 1026 km. His INSCYD coach Markus Kinzlbauer shares what it takes to perform such an amazing effort. https://youtu.be/W4ZKmSDhRbA With 6 victories in the Race Across America and a world record in 24h indoor track cycling (941 km), Christoph Strasser was already considered the…
Webinar Turn metabolic performance testing into a profitable service Whether you are thinking to add performance testing to your business or already running it, this is the business case for labs, longevity clinics, gyms, personal trainers and coaching businesses: the workflow, the investment, and the ROI, from someone who built one of Germany’s largest performance…
Yes, power has advantages over speed and heart rate. But if you want to fully exploit its potential, you need to know how your running or cycling power is composed. How much power is coming from the aerobic vs the anaerobic energy system? And which fuel source contributes most to your power output? In this…
IMPLEMENT INSCYD IN YOUR COACHING OR LAB BUSINESS: BOOST PERFORMANCE & GROWTH Discover the strategic advantages of implementing INSCYD into your business. We will walk you through the step-by-step integration process, share real-life examples of successful implementations, and provide actionable insights to maximize the benefits for your business. arrow-icon-down Get Free Demo Boost Earnings &…
Together with former professional cyclist and INSCYD user Peter Pouly, we talk about the future of cycling training and how that affects endurance coaches and their business. Peter is a former professional cyclist (5x National Champion Cross-Country Mountain Bike, 5x winner Haute Route Alps, 1x winner La Marmotte) and now works as a Directeur Sportif for…
Polarized training began as an observation of how elite endurance athletes train: 80% at low intensity, 20% at high intensity. But is polarized training better than pyramidal training for you? Let’s find out! Knowledge is power in the world of athletic training. By sharing this comprehensive article on polarized and pyramidal training, you’re empowering your…
In this webinar, we share which performance metrics make the difference in swimming, how you can measure those and how you put them into practice. Watch the webinar: Agenda timestamps: [01:29] Physiological testing in swimming: which metrics are of interest? [02:40] VO2max – Maximum aerobic performance. How to test VO2max without measuring it during the…
High-Intensity Interval Training, or HIIT is a popular training method among athletes, including cyclists and runners, who want to make the most of their training time. In this article, we bring you the top 5 HIIT workouts for endurance athletes and guide you on choosing the training methods that suit your needs the best. By…
Mountain biking is significantly different from road cycling – you can’t just use the same training prescription. Elite coach Janis Musins reveals how he transformed Martin Blums from a rank around 50 to an impressive 11th place on the World XC ranking, using INSCYD performance software. Spread the knowledge! Share this article with your fellow…
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…
THE PHYSIOLOGY BEHIND WINNING THE TOUR DE FRANCE: FROM DATA TO ACTION Exclusive webinar revealing the physiological secrets of Tour de France champions. Learn how to interpret and apply metabolic data to elevate training, boost performance, and develop winning talent. arrow-icon-down Learn more about INSCYD No More Guessing! Get a 360° Metabolic Profile of Athletes…
This webinar covers everything you need to know about swimming performance tests. From the test (protocol) itself, to the results and application. Alexander Törpel (Head of Diagnostics – German Swimming Federation) talks about the application of test results in training. You’ll get unique insights into the (longitudinal) development of performance metrics, of 2 Professional National…
You’re already doing great work. By measuring VO2 max, you’re capturing the single most important metric in exercise physiology — the one that defines how much oxygen your client can process and how fit they truly are. That alone already sets your service apart from most gyms, coaches, labs and wellness programs. But as you…
Stop guessing what to train and why. In 4 days, learn to identify exactly what limits your athlete’s performance — and design training and nutrition that targets it.
