the vertical elasticity of the

Geregistreerd op: 02 Nov 2018 Berichten: 412

Interesting post, which really shatters the myth that 180 steps per minute (i.e. 1.5 strides per second on the above graph) results in optimum performance. This value would be on the upper Nike Air Max TN Femme end of Burfoot’s range (though it would be interesting to look a video of Amby running his 1968 Boston Marathon 2:22 win; I suspect he obtained his former pace both with a higher cadence and a longer stride) where-as it is at your low end. What I find interesting, particularly looking at Weyland’s and your upward tilting curves at highest speeds is the implication that many (?) runners’ incremental velocity gains at their fastest sprint speeds is obtained more-so via a faster cadence than a longer stride. It would be interesting to study comparable data as you four have provided over a broader range of runners.In Nike Free Run 3.0 Mujer any case, having recently obtain a Garmin footpod to equivalently measure my own stride frequency versus pace it occurs that a treadmill test, versus a road test with data sampled over a much longer period of time,Nike M2K Tekno Womens results in less accurate and meaningful data – owing to the inherent springiness of the treadmill’s bed, the absence of wind resistance, and the runner’s increased consciousness of their cadence being measured (i.e. the Hawthorne effect). As a knowledgeable specialty running shoe representative recently told me: “Any over-striding heel-striking runner can consistently land on their mid-foot when running the length of the store.”that a runner needs to set the treadmill at one-percent grade to match the energy needed to run at that same pace outdoors, owing both to the absence of wind resistance and the completely www.amolan.es predictable treadmill landing surface (which if employed outdoors would risk tripping!) Purely subjectively I’ve found several treadmills at my fitness center which provide a very bouncy bed. While I’m sure the designers Nike Air Max 270 Femme of such treadmills hoped to reduce the likelihood of injury via minimizing peak landing forces of the limbs and joints, the result is that a one-percent grade doesn’t come close to my outdoors exertion at the same speed. So, on such bouncy treadmills I’ve learned to set those grades to 1.5% and sometimes 2%, based solely on my feel. It’s my guess that the bounciness of such treadmill beds encourages runners to develop an bouncy gait, but the runner can reduce this likelihood by being cognizant of their environment while running and maintaining a relatively high cadence.The amount of incline you’ll need to replicate Nike Air Max 90 Womens the cost of wind resistance will vary according to the speed you are trying to replicate, so a single value wouldn’t be appropriate. The force of wind resistance goes up by the square of wind speed, so double your Nike Air Max 2017 Femme speed and you’ll have four times as much drag, and for small inclines the amount of incline for doubling the speed you’d need to quadruple the incline.You also mention about the vertical elasticity of the treadmill Nike Air Max 97 Womens effect things, and I would have thought that this will be the case, how much it might help or hinder your efficiency will depend on how it effects your gait and the forces you are applying and the energy loses associated with this vertical deformation. It’s a complex system so could go either way and likely vary at different paces, so I’d can’t really make an educated guess whether one should incline the Nike Air Max Classic BW Femme treadmill for it’s elastic properties – to answer this one would need to do experimentation like done in the paper you highlighted. One thing for sure though – not all treadmills are the same so you’d need to Nike Air Max 95 Femme calibrate separately for each type.