OnTracx helps you in running smarter, not harder.
Too much mechanical load on your muscles and bones is one of the main causes of overuse injuries in running. OnTracx helps you in managing that load based on cutting-edge sensor technology.
Discover how surface, footwear and running technique is related to the load you experience.
OnTracx calculates the total (cumulative) load you experienced during an entire running session.
Find out how much load (in %) you experienced compared to previous weeks, which allows you to gradually increase load and reduce injury risk.
Assess how the experienced load relates to pain and comfort, and intervene when necessary.
The chance you have of
getting injured every year.
The amount of injuries caused by too much load on your body.
Less injury risk if you manage load properly.
With OnTracx you can focus on what really matters when it comes down to injury prevention!
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OnTracx is an award-winning and solution, supported by more than 12 years of scientific research.
Scientific experience
Data points analyzed every minute of your run
steps used for testing and validating the algorithms
We still have a long way to go, but are taking the first steps together with you. Although OnTracx currently does not tell you what to do or not, it helps you to individualize three main aspects:
We hope we answered them as clearly as possible.
The mechanical load is the load that your muscles and bones (of the lower extremities) have to endure during running.
Mechanical load is very different from the so-called ‘physiological’ load, which represents e.g. your heart rate, your breathing and how much energy your body requires during physical activity.
When the mechanical load becomes too much for your body to handle, overuse injuries, such as stress fractures, can occur. Although it has been possible to measure physiological load already for a long time (via heart rate belts, running watches, etc.), OnTracx is the first to quantify mechanical load in a valid and reliable way.
Because more than 70% of all running injuries are caused by too much mechanical load.
Recent scientific evidence shows that many overuse injuries in running occur when the mechanical load a runner experiences is too high for what the body can handle. However, this load is influenced by a number of factors such as running style, surface and footwear choice. As a result, changes in one of these factors can be detected when taking a look at the mechanical load profile of a runner.
Studies have shown that the experienced load can be very different between runners, even when running at the same pace. Until now, this load is typically measured on a treadmill in very specialized and expensive lab settings (only covering a short period of time). This makes such analyses very expensive and difficult to translate to a real-world context.
By using the OnTracx sensor and related algorithms, your load can be measured and subsequently managed correctly every time you go for a run, with the ultimate aim of avoiding (another) running injury.
OnTracx is relevant for runners who often suffer from overuse injuries, or for those who want to work on injury prevention.
If you often have overuse injuries, such as stress fractures, cartilage damage or Achilles or patellar tendinopathy, this is most likely due to the fact that your body has been loaded too much, training after training. OnTracx allows you to objectively quantify the mechanical load, subsequently using that information to gradually build up your training program, also taking into account the pain and feeling (comfort) aspects.
A tip from the OnTracx team: if you never suffered from injuries and have quite some experience in running, then your body might be able to cope with the experienced load! In other words: you are doing well and you might not gain additional benefits from using OnTracx.
On the other hand, in case of pain and discomfort. Always consult a medical professional first.
Although OnTracx currently does not tell you what to do (or not to do), it helps you to individualize the following main aspects:
Of course, we advise to consult your running coach for all things regarding your running program and medical doctor or paramedical specialist in case of pain or related symptoms.
This depends, but in short: the longer, the better.
The longer you run with OnTracx, the more accurate OnTracx can keep up with your load progression. On average, the condition of a runner increases after only four weeks of running. On the other hand, muscles, tendons and bones (significantly) adapt after only six months. That’s why it’s so important to track your mechanical load over time, as this information can then be used in a much better way to drive future benefits.
This depends on you as a runner.
If you’re a runner that frequently gets injured, or if you are training towards a certain goal, it’s necessary to track mechanical load over time. This is because subtle changes in your training regime, running style, surface or footwear choice can trigger large changes in mechanical load. Unfortunately, you will only be able to tell when it’s too late, i.e. when you’re injured (unless you’re using OnTracx).
On the other hand, if you never suffered from injuries and have quite some experience in running, then your body is most likely able to cope with the experienced load! In other words: you are doing fine in that case!
Your mechanical load is shown in a ‘g’-unit. The average runner has a load of about 9g, with a high impact runner showing values above 12g.
However, it is not straightforward to know whether you are an average, high or low load runner without actually measuring it. Fortunately, from now on you can use OnTracx to know this. In addition, this load can vary greatly from runner to runner. For example, recent studies show that mechanical load can differ between two runners who run a similar distance at a similar pace, with no less than 15%! That’s why we offer runners and the ones supporting them the possibility to know the load they experience- not just after a run, but also during running.
Changes in running technique can reduce mechanical load, but not necessarily.
First it’s important to realize that changes in running technique CAN lead to a reduction in mechanical load, but not necessarily. For example, an increase in step frequency (or cadence) results in a reduction of mechanical load for some runners, but in an increase for others. That’s why it’s so important to quantify mechanical load over time.
If you do change your running technique, then we advise you to do it very gradually (subtle changes) and check based on the OnTracx technology whether it effectively reduces your mechanical load.
Simply put, these parameters can all have an effect on the mechanical load you experience.
However, these changes are very individual and can thus differ from runner to runner. OnTracx allows you to discover which surface, footwear type and running style have a positive effect (i.e. lower) on mechanical load. In the case of people transitioning during their rehab into a return-to-run phase, the same information can be used to gradually increase the load on their body, while managing the pain and overall comfort levels.
No, OnTracx is not a medical device.
However, our innovative technology is designed to effectively manage mechanical load on the lower legs during running. Although not a medical device, our solution can be very relevant for injury prevention or rehabilitation purposes. Always consult a healthcare professional for personalized medical advice. Please take a look at our terms of use for further details.
Unfortunately, that’s still possible.
Although most running injuries are caused by an excessive amount of mechanical load, they also depend on a high variety of other parameters. This makes it very hard to estimate whether someone will get injured or not, as it is not straightforward to quantify and interpret each of the parameters and their mutual relationships.
However, knowing individual load profiles can provide valuable information to runners and related healthcare professionals such as physiotherapists. They can use the information to prevent (re-)injury and to optimize the rehabilitation process.
No, there isn’t.
Current scientific evidence shows that there’s no such thing as a ‘perfect’ running style that every runner should adopt, when it comes down to injury prevention or rehabilitation of overuse injuries. There are two important aspects here to remember:
As such it is insufficient to only focus on running technique when working on injury prevention, or when trying to rehabilitate from injury. That’s why OnTracx measures the experienced mechanical load on the level of the (individual) runner.
Absolutely not.
One of our most important pieces of advice is: if you don’t often suffer from injuries, keep on running as you are. Altering running style and/or training regime can also have a reverse effect, especially when drastically making changes in a short period of time (which we advise not to do).
Consequently, our product is not doing any magic, nor is it a quick fix for all running-related injuries. Instead, with OnTracx we aim to add relevant information that will help people make personalized decisions. In case of severe health issues or pathologies, we always advise to reach out to a medical professional.
Especially tibial stress fractures, plantar fasciitis, Achilles tendinopathy and patellofemoral pain have been shown to be related to a very high variety of parameters of which an excessive amount of load is considered the most crucial one - by far! Managing load has already been shown as the most effective way to successfully reduce running injuries.
The OnTracx sensor measures the acceleration of the tibia (or shin bone) during running.
Scientific research showed that the peak of this tibial acceleration (PTA; this is when the foot hits the ground) is strongly related to the shock or impact measured in the lab. As such, OnTracx allows measuring the impact or shock for every step, in an outdoor setting (where and when it really matters). This allows runners to work on injury prevention based on load measures. In addition to this, we’re also developing more advanced loading metrics. More on that soon!
Here it gets a bit scientific, but the correlation between the signal from the sensor and the laboratory measure shows a very strong correlation of r = 0.91.
This means that our sensor-based measure is almost the same as the load parameter calculated in lab-settings. As a spin-off from Ghent University and its Sport Science Laboratory - Jacques Rogge, we care about the accuracy and validity of our product, and do not aim to create something that looks good but doesn't really do the job.
Our measurements have been validated with the so-called ‘golden standard methods’. This means that we checked - and verified - that the load measured by Ontracx is similar to the one measured in specialized laboratory settings. This however doesn’t mean that our product is perfect. It just means we’re confident that what we’re measuring is correct enough to be used in real-world settings.
There are quite some other running tools out there, but they all have a different purpose compared to OnTracx.
While many other (wearable) technologies focus on how to improve performance, the focus of OnTracx completely lies in the injury prevention and return-to-run areas. We’re one of the first to quantify mechanical load in an evidence-based and reliable way, and translate this type of information to all runners out there, with only one goal: reduce the millions of running injuries worldwide.
We strategically placed the sensor on the lower leg because, during extensive testing, it proved to be the most reliable location to measure mechanical load during running. Here's why:
Specificity: The lower leg experiences the first rapid deceleration as your foot strikes the ground. Which only can be captured by measuring at that specific location.
Consistency: Unlike other locations, such as in the shoe, on the laces, or on the lower back, attaching the sensor around the lower leg minimizes interference from external factors and ensures your data reflects actual running load.
Validation: Through rigorous lab testing, we found that the lower leg provided the most accurate and reliable data.
It’s important to place the sensor the same way every time you go for a run. Here are some guidelines for proper sensor attachment:
Place the sensor about 10cm above your inner ankle, on the flat part of your shin bone. Always attach the strap firmly, in a similar way, and on the same leg (we advise to put it on the leg that suffers (most) from running injuries).
To make this more clear, we made a video that shows you how to attach it exactly!
It is hard to test all devices out there and bluetooth can sometimes become an issue. However, we keep an updated list of the tested devices right here. If your device is not listed, it does not necessarily mean that it will not be compatible, and it might be interesting to reach out before buying OnTracx.