The secrets of Parker Valby's cross-training are revealed

I'm not sure who you are talking about but do you have a photograph of Kratochvilova?

You sure have that right. Assume that the people at the top of the sport are the most likely. Who was on top of college running for several years?

You laid out the most likely pattern in your opinion. Another pattern was pointed out that is more likely. No individuals may fit the pattern.

Watch when she ups her mileage for the marathon. 👍

But she probably should stay on the track for a couple more years, at least. 👍😀

Keep following that argument and you're going to have to come up with a name you don't want.

Is someone who depends on xt to avoid injury going to do that?

If that is so then there is no point in comparing a runner with any other and so there is no point in comparing Giles with Valby.

Going through this thread, you are obviously a troll.

If you look earlier in this thread, I have an explanation on the usage of the ARC. It is unlike any "machine" and can enhance athletic performance, from an NFL running back, to a world ranked 10k runner or sprinter and, because of thoughtful engineering, can be safely used a month after a hip or knee replacement!

While a regular elliptical or bike may be ok for someone getting ready for a 4.5 hour marathon or general conditioning, their movements hamper the "exact" stride pattern needed for high level racing, sprinting, basketball, soccer, etc. The ARC movement, with the pedals always being parallel to the ground and the force being pushed to right under your center of gravity, enhances your normal stride power, using the glutes, hamstrings, quads and calves. With a regular eliptical or bike, you have that moment of "lull" as you go "over the hump" but with the ARC that "lull" doesn't exist, as the motion is constant power, causing a feeling of fatigue rather quickly, when using it at high speed and intensity. You can adjust the ARC for extended long sessions, but whether you are doing sprint intervals, a long session, or a mixture of the two, it is a very tough workout. The fact that many "average" gym goers, not into any specific athletic goals, don't continue with the ARC, while actual competitive athletes recognize it as something special, says a lot.

I would say once or twice a week on the ARC, supplementing your regular workouts or practices, is best, but everyone is different. The closest feeling to the ARC, as I use it, with 10-15 thirty second sprints, is doing uphill running intervals, stressing all needed muscles, but not taxing the joints at all, making it extremely safe.

I'm discussing the subject of the thread. If that's trolling then so is everyone else.

Why do I get the feeling you are an ARC salesman? Are you an elite or pro athlete? If it's so effective why isn't it the norm for most top distance runners?

You’re not discussing anything. You’re just another chucklehead troll going around and round with your inane nonsense. You contribute to driving people away from this place, because they get tired wasting time with the likes of you.

It’s working if your master plan is to drive people away. But I doubt you’re that smart. Instead, you come off as a mentally ill psycho.

My money's on relative.

No, I don't work for Cybex! I was a former college sprinter and a teacher/track coach for decades and continued to do my college level sprint workouts from 18 to my now 68 years of age. I bumped into an ARC trainer in the gym of my Minneapolis condo, when I noticed that it was the only apparatus not being used when, in the Minneapolis winter, some days made it hard to get outside. Being that I have always done workouts, such as, 8x300m with a minute rest between, without much difficulty, I was stunned that I could not do 8x30 second sprints on the ARC without becoming physically sick. It was then that I realized that this is a real workout tool, and became even more impressed, when, a day later, on an indoor 300m track, felt great doing a series 200m sprints, with my natural stride not affected by the ARC at all. (Unlike a bike or elliptical)

In doing some research afterwards, I was surprised that the ARC had been around for many years with super results, but simply is too gut wrenching for most average people to use. It certainly doesn't surprise me that Valby has had great success using the ARC a couple of days a week, as it hits the speed/power/endurance capacities hard, while resting the joints a bit. I've never been much for casual "cross training" for competitive athletes, as a long time sprint/mid distance coach, as it usually was a sign of a bit of laziness and not wanting to do the painful work necessary for 400m to 10k success, but the ARC, used with intensity as a supplement, is the real deal, and maybe the success of Parker Valby, will increase it's visibility.

John Trautmann used the arc trainer in his mid 40’s prior to running 4:12 or whatever that age group WR was. I’d like to know his opinion as one of the few world class runners known to have experience with it.

Those who respond as you do aren't discussing the subject of the thread. I have become the subject. You have nothing to say about her training.

So what has that to do with Valby's training? Right. You have nothing to say about that. Just another tantrum.