Why not just get some roller blades while we are at it, how much faster can one roller blade a downhill marathon?
Why not just get some roller blades while we are at it, how much faster can one roller blade a downhill marathon?
Lab tested these about 3 years ago against the Adidas Energy Boosts & Brooks Ravenna.
For me they reduced my running economy about 1-2% even with the unique design.
n=1. Take this info with a grain of salt.
How has no one posted this yet?
all those reviews sound so fake
Yeah, that was worth a shot in the dark.
What about spira? they were another small company with a "unique" answer to this energy return thing. What ever happened to them?
Also does anyone know if they were any good?
theJeff wrote:
With a stride length of 6-7m, I'm not sure the cadence matters too much.
Seriously, I bet you could MOVE on those things.
That guy is not getting 6-7 meters per stride, not even close.
Here is the nitty gritty. A stable footstrike must hit the ground at relative rest or close to it, at which point you have only a split second while your base is under your center of mass for full control of upward acceleration, lateral movements and torque. The faster you are going, the shorter this time interval is, and the longer your stilts, the harder it is to control them skillfully. To your body they are type 3 levers, i.e. the leverage works against you, not with you. They can accelerate things faster but require more force to do so, and the human body isn't equipped to provide that much force. Lift a 50 pound weight, easy, right? Tie it to the end of a 3 meter pole and lift it again. Not so easy.
Blade runners use a close approximation to the way the human lower leg actually works. If super-long stilts would help, they'd already be doing it. Their advantage comes from the low weight of their prosthetics, enabling high cadence with little energy cost.