Thank you all for the great webinar. I'm a fitter in Tokyo and had a couple of impressions. 1-The pedal force analysis over the clank rotation should be disassembled into the muscular components and to the fundamental components (come from gravity and/or inertia), like we see on the book by E.R. Burke "High-tech cycling" (2002). 2-I'm impressed by your positive feelings over the flat pedal exercise. Possibly a cross-country ski style clip- in pedal system would do. 3-Thank you for the insight of, "Stable hip is needful for the glutes recruitment". Thank you!
Thanks for the discussion, I was thinking that around 51 min where the muscle activation didn't match the force plate data that maybe it's a question of rider orientation (or maybe preparing to be put under load like a pre-activation)? I know from sprinting that we have a generic model for postures and joint angles at ground contact both for the swing leg and the stance leg, we also do a lot of the work in the air to create the downward momentum into the foot strike. From the human structure point of view those postures represent the our threshold for the highest output we are capable of. I wondering what your perspectives are on the extent are we trying to orient ourselves on the bike mimic those positions and how the limitations of riding a bike take us away from those??? Obviously we get a good bandwidth of data for how to optimally ride from force crank diagram, but I think it would be useful to compare where those forces occur in the pedal cycle to the orientation of the riders centre of mass. In running you try to strike directly under the CoM, what would be the equivalent in cycling. I'm thinking that the peak torque should change depending on the riders position i.e. forward in the stroke in the seat position and back in the standing one. so what are the optimal postural angle ranges for flexion and extension relative to the direction of force rather than just the vertical plane ? Also I would think that you would try to preserve that "max power output" position as much as possible in the seated position. I would be interested to know what you think, and where the angles we currently use come from. Food for thought, Thanks again
Did you notice the power differences in the Wattbike footage at the beginning? I own a Wattbike and see the same effect when I ride very easy vs at a consistent higher power output.
Again, thanks a lot for doing these webinars! This is awesome! One question, could inactive quads cause anterior knee pain? As in the anterior knee is being compressed, rather than the knee extending?
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Thank you all for the great webinar. I'm a fitter in Tokyo and had a couple of impressions. 1-The pedal force analysis over the clank rotation should be disassembled into the muscular components and to the fundamental components (come from gravity and/or inertia), like we see on the book by E.R. Burke "High-tech cycling" (2002). 2-I'm impressed by your positive feelings over the flat pedal exercise. Possibly a cross-country ski style clip- in pedal system would do. 3-Thank you for the insight of, "Stable hip is needful for the glutes recruitment". Thank you!
Thanks for the discussion, I was thinking that around 51 min where the muscle activation didn't match the force plate data that maybe it's a question of rider orientation (or maybe preparing to be put under load like a pre-activation)? I know from sprinting that we have a generic model for postures and joint angles at ground contact both for the swing leg and the stance leg, we also do a lot of the work in the air to create the downward momentum into the foot strike. From the human structure point of view those postures represent the our threshold for the highest output we are capable of. I wondering what your perspectives are on the extent are we trying to orient ourselves on the bike mimic those positions and how the limitations of riding a bike take us away from those??? Obviously we get a good bandwidth of data for how to optimally ride from force crank diagram, but I think it would be useful to compare where those forces occur in the pedal cycle to the orientation of the riders centre of mass. In running you try to strike directly under the CoM, what would be the equivalent in cycling. I'm thinking that the peak torque should change depending on the riders position i.e. forward in the stroke in the seat position and back in the standing one. so what are the optimal postural angle ranges for flexion and extension relative to the direction of force rather than just the vertical plane ? Also I would think that you would try to preserve that "max power output" position as much as possible in the seated position. I would be interested to know what you think, and where the angles we currently use come from. Food for thought, Thanks again
Thanks for the excellent material. Fitter in São Paulo Brasil
Did you notice the power differences in the Wattbike footage at the beginning? I own a Wattbike and see the same effect when I ride very easy vs at a consistent higher power output.
Again, thanks a lot for doing these webinars! This is awesome! One question, could inactive quads cause anterior knee pain? As in the anterior knee is being compressed, rather than the knee extending?