Do tempo next%'s/vaporflies make you lose running fitness when used as a training shoe?

when I say "specifically tempos" I mean tempo runs, NOT the tempo next% shoes.

I’ve also thought about this. All sorts or runs, not just “tempo”. Maybe strength on these areas : hips, hamstrings, knees, calves , shins, ankles, feet. But these same areas break down for a lot of runners, no?

The enhancements are trickling down anyway. We may not have the choice in a few years. Im so spoiled, my older foams feel like barefoot running.

Yeah good point. Honestly at this point, I think I'll use them periodically for when I have a workout but I feel like crap that day. Kindof like an "easy" workout day. Lol.

yes, if you're running in those shoes you should probably adjust your target/expected paces accordingly, otherwise the same pace in faster shoes will mean you're not training the same anymore

Yes. I have always disagreed with the idea that the reason people are getting faster on the roads is because they can now train all the time in Next% shoes. That idea goes against every training principle I know.

Specifically in training, accumulating muscle micro tears and temporary damage actually promotes recovery of the muscle cells which leads to adaptation. Hence training in “trainers” should be better for your development.

People who argue that training without fatigue or muscle stress is beneficial, don’t understand basic training principles. If that was the case, then we should train entirely in underwater treadmills or on Alter G treadmills.

You should adjust your target paces like the other poster noted, but otherwise no this will not hurt you.
Personally I was able to take my training to the next level when I made the switch (even after racing in them previously)

While I assume that you'll be racing in these, that's the ultimate question. Adjust the paces like others have said, but if you only workout in these and don't race in them, you will be disappointed.

Probably the biggest benefit of VFs (or comparable shoe) is that you can recover a heck of a lot quicker and be more ready for the next hard effort

I hated that shoe. It gave me shin pain in my left leg. Very firm and NOISY shoe. The pegasus turbo 2 was 100 times better.

You have misunderstood everything. Lets say your ancles get so sore you only get to run 100km weeks. So you get supershoes who help you train 150km weeks. Then your ancles isnt your limiting factor. Your ancles was never a limiting factor in races anyways so it doesnt matter.

It's all about effort. You wearing slower shoes and just running a slower pace is equal to wearing faster shoes and running a slightly faster pace. If your teammates are wearing slow shoes and you don't want to work as hard to keep up with them, then yes wear the faster shoes so that you can still keep contact with them in the workout with an easier effort. If you're wearing the fast shoes on easy runs, then your easy pace will just be slightly faster than with regular old trainers. You do not lose fitness if your effort is the same.

My Next% (purchased in 2019) wore out at 150 miles. The foam insert has molded to my toes, especially on the right foot, and there are permanent indentations where my toes are and ridges in between my toes and forefoot that feel like my sock is bunched up. The outside soles are also showing creases and other evidence of fatigue.

I love the shoes and bought a new pair. I only wore them for races and am shocked how quickly they wore out. Hopefully Nike has fixed this issue, but I don't see them holding up well as a daily training shoe.

Hello,

I presented almost this exact topic for my Honors Thesis this semester. It was found that training in these shoes lower heart rate, increase cadence, and improve VO2 Max. Obviously, with the shoes being priced around $250 it makes it extremely difficult to afford these shoes as an every-day trainer but the scientific data shows that using supershoes as trainers helps improve athletic performance.

if anyone would like I am happy to send my thesis project to anyone who would like to take a look :) just provide me your email

Grant Kaminer

But does not Improve the engine. I know someone dying after 6 mile tempo prior to shoes. Now to get to same HR he needs to do 8 miles in super shoes

I don't like how you said "actually"

thats actually interesting, can you please send it? i wonder how improvement stuff would happen

As others have said, you’re looking at this wrong. The shoes allow you to do more volume and intensity, more often. It is legal doping. A biproduct will be your times improving.

However, a potential negative of the more aggressive shoe could be your average run paces trending quicker (since they feel like crap above 7 minute miles) and the cumulative fatigue leading to burnout or injuries or throwing off your HR based training.

No.

It is quite stupid to race with shoes You don't use in training.