The vaporfly thread
86 watchers
Dec 2020
9:02pm, 2 Dec 2020
8,917 posts
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jda
Looks like a well-constructed study, at this point I'd say there is no real doubt that there is an effect of about that magnitude for most runners compared to most (previous) shoes. Will be interesting to see any decent evidence as to how the newest competitors hold up.
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Dec 2020
9:06pm, 2 Dec 2020
3,281 posts
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J2R
Yes, I really like the way they went about it. Clever.
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Dec 2020
9:11pm, 2 Dec 2020
3,282 posts
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J2R
What I'd be really interested to know is whether the performance improvement they mention of 1.4%-2.8% for men in the marathon would also apply to shorter distances. At first glance you'd think it would. But then if the benefit of these shoes is primarily reducing loss of performance due to muscle fatigue, this is going to be a more significant factor in the marathon than in shorter races, isn't it? So the benefit might not be as great.
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Dec 2020
9:43pm, 2 Dec 2020
32,353 posts
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SPR
Fair enough J2R re reviews. The non pro version of the Reeboks might be a good training shoe but has too much drop for me (I train in Altras currently, Escalante 1.5 mainly, with the Kayenta for road speed runs). The pro only has some lugs to protect the pebax and the pebax is very soft so I don't think it would last long enough to be a pure training shoe. Apparently version 2.0 is pure pebax: roadtrailrun.com |
Dec 2020
10:02pm, 2 Dec 2020
21,531 posts
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Dvorak
So if you are a decent competitive stanard and really well off runner, well enough off to only run in Vaporflys, so get all those benefits in training as well as races, you could pretty much buy your way to the podium: kind of like someone buying a £5000 bike getting a big advantage over someone with a £1000 bike? Come to that, when there were still events, had the Vaporfly been showing up on the triathlon circuit? |
Dec 2020
8:14am, 3 Dec 2020
1,769 posts
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Brunski
Not sure Dvorak, as everyone else who was faster than this competitive standard (well off) runner also has access to these shoes. From my experience I’d say that they definitely help with leg fatigue late in races, as they encourage a strong efficient stride. Not sure I feel the ‘bounce’ or ‘spring’ others have reported. I’ve run 5ks in them and not got near my fastest time (which was in a pair of Adidas Takumi Sen - probably similar weight, if not slightly lighter and no real cushioning at all). |
Dec 2020
8:51am, 3 Dec 2020
1,033 posts
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SKR
J2R i used to do most of my workouts in the 4%s, they were perfect. Training in the Next% however just feels like cheating, so I leave them for the tough workouts like thresholds or MP paced long runs.
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Dec 2020
8:52am, 3 Dec 2020
2,366 posts
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Oranj
Have you all found the secret trick of maximalist running shoes?
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Dec 2020
10:25am, 3 Dec 2020
200 posts
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AJLB
On the shorter distance question, my pbs at every distance from 5k to marathon in 4/next %s. Interestingly my best time in the ZFs is only 5 seconds slower than the 4%s. I've seen quite a few folk in Vaporflys at track 5000m too, when you might think that track "bounce" would render them superfluous.
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Dec 2020
10:36am, 3 Dec 2020
3,285 posts
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J2R
If you're a serious elite level marathon runner, you're probably running 100 miles per week. These shoes seem to be rated to last for around 200 miles, so if you're training in them as well as racing, you're spending £100 per week on shoes. Don't see many people doing that! Kipchoge and others at or near his level can train in them because undoubtedly Nike gives him the shoes for free, but if you have to buy your own shoes, I don't think so. |
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