Timeline for How do I calculate the power required to climb a hill at a given cadence?
Current License: CC BY-SA 3.0
12 events
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| S Jul 26, 2012 at 20:10 | history | suggested | amcnabb | CC BY-SA 3.0 |
Update a link (the page at the old link points to this newer version)
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| Jul 26, 2012 at 19:30 | review | Suggested edits | |||
| S Jul 26, 2012 at 20:10 | |||||
| Jan 21, 2012 at 17:00 | comment | added | tdc | Ah but stamina is related to the different energy systems in the body ... doesn't necessarily mean that the power output is different! | |
| Jan 20, 2012 at 22:22 | comment | added | Daniel R Hicks | Like I said elsewhere, I recall that someone (I'm thinking LAW) published some fairly rigorous test results on cadence vs stamina about 15 years back. Perhaps someone with access to a Reader's Guide type database (or simply the entire collection of LAW journals since 1970) could dig it out? | |
| Jan 20, 2012 at 20:59 | comment | added | tdc | @Jefromi Good idea!! | |
| Jan 20, 2012 at 19:31 | comment | added | Cascabel | @heltonbiker: Post another question! (Might actually be good on fitness.stackexchange.com since it's not entirely cycling-specific, and there might be more people there who are up on the literature.) | |
| Jan 20, 2012 at 16:35 | comment | added | heltonbiker | @tdc I'm pretty much inclined to disagree, but I think more scientifical evidence would be needed to support any of the two points of view. If I find some paper or the like, I'll come back and post (even if it contradicts me). Besides, since this is not a forum, I'm afraid it's already offtopic. | |
| Jan 20, 2012 at 15:41 | comment | added | tdc | @heltonbiker I don't think that's right: I think the energy required is the same, it's just that the body has different systems that work at the two different cadences (slow/fast twitch muscles), which use different energy systems in the body. The result is a difference in psychological effort, not physiological effort. | |
| Jan 20, 2012 at 15:31 | comment | added | heltonbiker | @tdc There is a complicating factor on the same-power-with-more-than-one-cadence principle, because speed of muscle contraction influences its efficiency. Then, if you ride, say, 20mph at 90rpm, your body spend much less energy than if you rode the same speed with 40rpm or 150rpm. The mechanical work measured from outside might be the same, but the physiological effort would not, theoretically. | |
| Jan 20, 2012 at 14:53 | comment | added | tdc | :-) Well actually there is some evidence (can't find the reference right now) that the reverse is true: performance follows the circadian rhythm, and peak performance is actually around 6pm for most people. Although obviously not if you've already done a session in the morning! | |
| Jan 20, 2012 at 12:39 | comment | added | Daniel R Hicks | Do the models account for the known fact that it takes twice as much energy late in the day to achieve the same speed you easily achieved six hours earlier? | |
| Jan 20, 2012 at 9:30 | history | answered | tdc | CC BY-SA 3.0 |