el gato wrote:
I'd be more inclined to believe the Styd than the treadmill or even the Runn. The Stryd doesn't measure speed, it measures acceleration. Ask yourself why the Stryd might be reading lower than a treadmill or a Runn. The thing that most people don't realize is that a treadmill belt slows down with each footstrike as your weight pushes down on the belt against the deck. If you haven't lubed the belt/deck in a while, or if the treadmill has a lower power motor that doesn't have the torque to keep a steady speed, then the "actual" speed you'll be running on the treadmill (the belt speed while your feet are in contact with the belt/deck) will be a fair bit lower than the speed the belt is moving when it's unloaded. I find it implausible that the Stryd would somehow be inaccurately measuring acceleration data at the foot while on a treadmill vs. outdoors. It has no idea what surface you're running on - it just know how fast your foot is accelerating/deccelerating.So you believe and haven’t tested. Where have we heard that on ST before? Lol. Ok believe what you want and keep on running. It’s all the same to me and all good.
The Runn measures belt speed optically. It is calibrated while you are running on the belt. With multiple optical pickup points around the belt it accounts for the belt speed variance phenomena I mentioned above and u reiterated, I have a high end commercial treadmill that is regularly maintained by the professional that handles all gym equipment maintenance in our city.