Posted by Frank Day (63.201.228.13) on February 04, 2004 at 16:55:48:
In Reply to: RE Frank /Larsen posted by Juerg on February 04, 2004 at 08:14:52:
: Using power crank even tough for some coaches to believe stimulates the hip flexion phase really
: well. Checking EMG activity and trying to do short sprints out of the saddle with power crank
: and you will have a problem to see a difference between EMG running of this person and the print
: out on the bike.
: The activation pattern seems to be close to equal , The impact dramatically better on PC than in
: running.
: Interestingly enough is the EMG pattern , once the Athlete is using PC over a period of 6 - 12
: month . Now if the athlete is really focusing of the motion from the hip ( not pushing from the
: knees ) he can activate again very similar activation pattern on the bike , as he would do in
: running.
Juerg.
Do you have EMG data on use of PowerCranks. I have Duke University wanting to do study of PC in rehab of ACL repair. They are very interested in documenting hamstring activation which is important in stabilizing the joint. If you already have some of this data then maybe they can skip a step or two in what they want to do. If you have good data in this regard I will put them in touch with you.
Also, I think the big unknown for the future with PC's is how they should be optimally used for run training. How much can the athlete drop back from running on the road? This will probably vary depending on the event. Like you said, coaches don't like to change so it may take quite a time before we understand this well. I think it will be a lot though.
Frank