If I took a second off my marathon personal best every time someone asked me to recommend a pair of running shoes, by now I’d be smashing the two-hour marathon mark. With dozens of brands, thousands of styles and more baffling jargon than a Blockchain seminar, it’s understandable that buying running shoes is hard. Weeding your way through all the promises to make you faster and prevent injury isn’t helped by the fact that picking the right shoe has long been more of a subjective art than a science. But that might be about to change.
Until now, the weapon of choice for most specialist running shoe retailers trying to help us select our footwear has been the gait analysis. Your average gait test generally involves being popped onto a treadmill to run for a few minutes while a shop assistant either stands behind to assess your running form in real-time or uses some kind of video slo-mo tech to identify if you over or under pronate. The truth is, it’s not particularly scientific and with today’s increasingly advanced tracking tech capabilities, it was only a matter of time until someone came up with something better. That someone is a company called dorsaVi.
This UK-based company specialises in wearable sensors, software and algorithms that objectively measure and analyse the way we move. Its clinical-grade systems are used by elite athletes, professional sports teams, physiotherapists, chiropractors and coaches for injury prevention, rehabilitation and performance enhancement across a wide range of sports, including running. And now it’s tooling up running experts with its latest tracking system, ViMove2, to provide hard running dynamics data – information about how you run – that can help identify which running shoes we should really be wearing.
The dorsaVi test is extremely simple. Two small sensors, each packing an accelerometer, a gyroscope and a magnetometer, are attached to my shins and I’m asked to do a short warm up on a treadmill, followed by runs of around two minutes in duration, both at the same speed and each wearing a different pair of shoes. How many two-minute runs you do will depend on how quickly the stats identify a good shoe for your running style.
Each run produces a set of data that includes Absolute Symmetry Index (a measure for how balanced your body is), Ground Reaction Force (the force exerted back from the ground when your feet strike), Ground Contact Time (the amount of time your feet are on the ground during a cycle), Initial Peak Acceleration (the vertical acceleration and load through the legs when your foot first hits the ground), along with cadence and speed. In the hands of an expert, this information gives vital insights into how ‘well’ you’re running in any given shoe and makes it easy to compare your performance in each shoe.
Crucially, this isn’t about finding shoes to change your running style, quite the opposite. The aim is to use the data to identify the shoes that work best with your running style, to make you more efficient.
Whether you’re running for fun or chasing a sub-two marathon, running is all about efficiency. The more efficient you are, the better you can run without wasting energy and effort and that means, in theory at least, that running should feel easier and be more fun.
Of course, efficiency isn’t the only factor here. ViMove2 can also spot any imbalances that might be caused by an existing injury or suggest a future injury risk, and of course how your shoe selection might be affecting both of these.
Part of the decision-making process will always come back to personal preference and the subjective element of comfort remains critical. However, according to Ed Butler, clinical account director at dorsaVi, the tech has demonstrated a high correlation between the shoes the data says are most effective and those runners select themselves as the most comfortable. Which makes sense.
The data these little lozenges provide is not unlike some other running wearables such as Stryd or Lumo Run, but there’s one major difference – the technology here is lab-grade, so you get clinical levels of accuracy that many mainstream consumer wearables don’t deliver, because it’s simply too expensive.
What makes ViMove2 even more powerful is that it also opens up the opportunity to see how runner runs in different shoes, outdoors or on different terrain. This tech works outside of the shoe shop, off the treadmill, on the road, along the trails or wherever you want to run in the real world. And that’s a game changer because most of us don’t wear our $150+ running shoes on the treadmill.
The first running shoe brand to partner up with dorsaVi and bring this to shops across the UK is Mizuno. If you’re cynical about the encroachment of tech into the runspace and just how much value it can add, what Mizuno found when it ran some demos at London Triathlon Show in February 2018 should give you some food for thought.
Seventy-one runners were put through the test and in each case a pair Mizuno shoes were recommended. Of the 71 runners who did the ViMove2 test, 61% saw an improved cadence, with an average increase of 5%. Just over half (58%) saw an improvement in their Absolute Symmetry Index – that’s basically how evenly you run and the more symmetrical you are between left and right side, the better. Those who performed better clocked a whopping 68% average improvement. The group also showed an average 5.5% reduction in Ground Reaction Force (think impact on the legs) and an average 10% reduction in Ground Contact Time, another key indicator of improved efficiency.
While these tests were done with Mizuno shoes, ViMove2 can be used to help runners find the right shoes across all brands. What these numbers point to is some strong evidence to suggest that using data can help us make more informed choices about what we lace up.
How wearables can help you find your perfect running shoes [Wearable]