Global navigation satellite systems such as the Global Positioning System (GPS) is one of the most important sensors for movement analysis. GPS is widely used to record the trajectories of vehicles, animals and human beings....
He’s also looking at the this from the perspective of 1500 to 5k fitness. In that case, most people are going to see progress with 1 threshold, 1 higher intensity, and 1 long run on lower mileage. In fact, look at Josh Kerr and Cole Hockers training and this is close to what you’ll see.
Perhaps he’d give a different answer for 10k to marathon distances.
In another interview, he kind of dismantled the term “Norwegian Method” which I thought was interesting.
To be more specific, Stryd measures distance by integrating the accelerometry data from toe-off to foot strike. Determining precisely when those two events occur is the key to accurate measurements. This is why calibration is required for maximum accuracy, and why differences in surface and shoes can introduce errors. Still, the approach typically works well, and isn't subject to issues due to "shadowing" that often impact GPS.
No, you have to calibrate it, at least if you want accurate results.
And as you have to calibrate it against a known distance per shoe to give you accurate results, and if the placement by one lace causes it to be inaccurate, as I found with the last four generations, it shows it’s not fit for purpose as we all find
And as you have to calibrate it against a known distance per shoe to give you accurate results, and if the placement by one lace causes it to be inaccurate, as I found with the last four generations, it shows it’s not fit for purpose as we all find
If i wear certain super shoes, it'll measure 5.2k+ in a 5 or even as much as 10.5k for a 10k.
This is despite Stryd claiming this is impossible, yet I've seen many people post such things. All following exactly the manufacturer instructions.
Quite frankly with stuff like this it's kinda funny they can call it a "power" meter. They don't really make any strides (pun intended) because they have apologists and propagandists like the Palladino fellow or their Reddit group literally shutting down or blocking anyone who dares to suggest it might be a bit crap for a lot of people.
And as you have to calibrate it against a known distance per shoe to give you accurate results, and if the placement by one lace causes it to be inaccurate, as I found with the last four generations, it shows it’s not fit for purpose as we all find
If i wear certain super shoes, it'll measure 5.2k+ in a 5 or even as much as 10.5k for a 10k.
This is despite Stryd claiming this is impossible, yet I've seen many people post such things. All following exactly the manufacturer instructions.
Quite frankly with stuff like this it's kinda funny they can call it a "power" meter. They don't really make any strides (pun intended) because they have apologists and propagandists like the Palladino fellow or their Reddit group literally shutting down or blocking anyone who dares to suggest it might be a bit crap for a lot of people.
The Reddit group is run and moderated by Stryd, and they ban very easily. It’s best thought of as a marketing operation and not as a place for discussions.
I've been a Stryd user for 3 years but this thread has opened my eyes a lot. I contacted Stryd about a calibration test I did in different shoes and at different paces. They dismissed my concerns, out of hand. Not only do different shoes require calibration but different paces n the same shoe do too. At less than 4:30/km it over reads distance. Around 4:00-4:00/km it is accurate and then faster it under reports distance. I found the firmer/lower stacked the shoe is the more accurate it is. I'm only wearing my pods now to compare to older data.
Well of course if you move the sensor and don't recalibrate the distance will be off. That's the very definition of "user error", equivalent to not setting the zero offset of a bicycle power metre then blaming it when the data are wrong.
Well of course if you move the sensor and don't recalibrate the distance will be off. That's the very definition of "user error", equivalent to not setting the zero offset of a bicycle power metre then blaming it when the data are wrong.
Add to the above, I have done all this with different shoes myself. Recalibrated. Put in the exact same position. Everything. Super shoes have it miles off for me as well. Not even close. GPS obviously much more sensible in this situation. It's wild people even really think it's reasonable btw to have to go through all this to make it work for a lot of people.
Different types of laces I've even had make a difference, in the same shoe.
As someone coming from a cycling power meter in Tri, it beggars belief anyone really takes it seriously anymore. Bar the obvious and guys like Palladino shilling plans based on it.
I actually used to race with someone in Tri who was paid decent money to "push" stryd in it's earlier days, along with guys like Coggan, or any other scientific studies that were set up around the time with the idea of giving it credibility.
Probably the one case I personally can make for it and I have seen mentioned is using treadmills. I travel worldwide for work and it's definitely more accurate than just trust treadmill pace or distance machine to machine. It's better for that job than the old Garmin foot pods. But I don't think anyone really is taking it seriously for much more than that.
Btw some of the mods on the Stryd Reddit page actually are Stryd employees mostly of diehards. They are very, very good at keeping stuff on brand and only positive. One of the reasons you don't see much negative about Stryd is they are excellent at silencing the critics by not giving them a platform. You can see how angry someone with huge investment in it as credible like Steve is annoyed by places like this thread as they can't control the narrative. I think sirpoc posted they stopped replying to him a long time ago and I'm sure a lot of us are in the same situation or dismissed. A lot of people just forget about the thing and it's gathering dust.
They are a fantastic case though of marketing that if you can control what is written and said about a product that you can make people believe anything with a few names put to it and few dubious papers.
That is not the definition of user error. I left it at 100 to perform the test as per Stryd's instructions. Each shoe I ran 4 laps at each pace/power. I can understand the differences between shoes but you should not need to change the calibration, based off the speed your running that day, be it easy, MP or 5k pace. I've found 1 shoe that wasn't affected by pace and it was a low stack Altra that isn't made anymore.
What are you on about? What’s stupid is running 4 laps of the track in the same shoe and getting a different result every time depending on the pace you run.
i’m not talking a small difference im talking 20-30 metres difference.
This post was edited 1 minute after it was posted.
lol, you have it on the same shoe but pull your laces tighter or leave than slightly loose and the product gives different values of power, paces and distance.
They have not got a repeatable product, heck between product version the numbers vary and even between replacements of the same product version there are differences.
if anyone should puzzled it’s you professor clueless.
I have a conversation with the team when they came over for the London marathon and they “couldn’t” solve my issues at the expo so pushed now software to my pod, which made no difference. There is a Tim grose YouTube when he used multiple stryds to multiple Zwift accounts on treadmill showing that it’s a random number generator.
im sure puzzled professor clueless will say it’s just physics so you are wrong and no one know how to use a consumer product so its user error but isn’t that the point, if there is so much user error it’s a product problem.
anyway way too much on Stryd as this thread is about training not specific products.
This sorta makes sense, in theory. Unfortunately it falls completely apart when it meets reality, where you have to meticulously determine the calibration factor for each and every pair of shoes you own. Otherwise, user error!
And even if you do that, you'll be faced with the limitation of only being able to apply a single calibration factor. Which means that you can't actually alter the slope of the pace/distance curve. Which means you have to pick and choose whether you want accurate distance measurements when you're running at a slow pace, at a steady pace or at a faster pace.
Of course, ask in the Stryd community, and you'll probably be told that not adjusting the calibration factor for all of these factors at all times is… you guessed it, user error!
In the real world, even a ten year old Garmin with a completely outdated GPS chip is more consistent in measuring distances per run across a variety of shoes and paces than a Stryd with a constant calibration factor.
The Stryd _is_ better at picking up and showing pace changes, though, I'll give you that. I use it as the source for pace in my daily runs for that reason.
