Tuesday, July 14, 2009

Altitude and Intensity

Because I'm currently residing at an elevation that is known to kill brain cells, and because I have so few to begin with, I thought I'd write down a few more of my lamebrain thoughts on the matter of altitude, specifically the whole live high/train low philosophy…

Though it's a pretty substantiated one a philosophy it all it really is, especially when it comes to true endurance performance (and not simply physiological acclimation). Remember, not all changes in physiology---even when positive---result in improved performance. For example, after all those surgeries, I'm an extremely good-looking guy, as my outward composition clearly proves in the photo above. But does all this good-lookingness make me a faster athlete? Of course not! Still, to me, it's a worthwhile trade.

Anyway, the key point here, besides shedding some light on my devastatingly handsome (albeit yak-like) appearance, is that positive changes don't always bring about positive results. In the case of altitude, there needs to be further research to show a direct link between altitude and athletic performance. While I believe there's benefit to be had by living at altitude (as it relates to race performances) it has yet to be "proven". (Please disregard the throngs of Olympians and World Champions living and training at altitude, this is NOT proof!)

Proof, of course, it tough to find in sports. Proof of drug use, proof of training methodology, and proof of what brought an athlete to the top (or to the bottom) are all hard to, well, prove. And while I tend to think that proof is as simple as looking at the final race results (i.e., the bottom line is the finish line), there will always be something else to prove long after the fact.

But back to the live high/train low thing and its relationship to us endurance types. One of the key points always mentioned in the live high/train low studies is the intensity of exercise, in particular, the "fact" that an athlete is unable to train as "intensely" up high as he or she would be able to at a lower elevation. This is controversial at best and I'll get to that shortly. First, a primer on "intensity".

Not only is "intensity" a relative term (for example, one can train intensely long or, and this is perhaps a better example, one man's intensity may be another man's yawn) but it is also vital to understand that, no matter how high or low we live or train, we, as triathletes, are ENDURANCE athletes. Our training must therefore be geared toward training our endurance, not our short-term capacity. Training intensely, despite all its merit to scientists, is secondary to building a motor (and chassis) that can last. Training intensely can help with this, of course, but first comes basic endurance (i.e., the ability to endure). Long and strong baby!

Okay, with that in mind, we'll move on. If it is believed that there is benefit to living high, there must certainly be some benefit to training high. Logic tells us this, since the same effects of living high occur when training high since both involve being high. The altitude doesn't suddenly change its tune because you're sleeping or training; its effect is the same. But let's say for a minute that there's NO benefit whatsoever to training high (a silly notion for a number of reasons but let's just imagine for a second that there could indeed be no benefit to training high, as is essentially suggested by these "studies").

Would training at altitude therefore be a detriment?

Again, the answer for the endurance athlete is no. N-O, no. If, however, you're an athlete who's more or less required to train intensely due to the nature of your goal event (e.g., a middle-distance runner or perhaps even a sprint-distance triathlete) then perhaps training up high would decrease your capacity. (We certainly know it can decrease your capacity to recover quickly, but that's not what we're talking about right now.) This is because these athletes are not only required to work at higher percentages of their maximal heart rate (a maximal heart rate definitely qualifies as intense) but also produce high work rates---not just high heart rates---while doing so. Because of the cruel nature of altitude and the physiological cost of simply being up high, the body cannot also work hard enough to deal with yet another stress, that being the effort involved in generating high power outputs or fast paces. You see, altitude allows you to think you're working intensely, and to be sure you are, but you're not producing the same results at that intensity.

Intensity, besides being a relative term and hard to define, is pretty easy to understand. If you're training intensely, you will know. (One sure sign is that you won't cope for long without having to ease back…) And you can do this anywhere, whether you're at sea level or sucking air atop Mount Everest. If you're still not sure about this just book a flight to Kathmandu and start walking east-northeast. As you ascend you'll understand what intensity really is, when taking a single step is an ordeal in and of itself. And yet the scientists say it isn't so. Perhaps they too have starved their brains of much-needed oxygen.

In a future blog I hope to touch on why altitude training might be bad for the endurance athlete. Whether I actually get to it or not depends on my inherent laziness and my endless---and often unsuccessful---quest for free wireless. Off the top of my head, all I can come up with is sunburn and delayed recovery. Oh, and those damn yak attacks. Just look what those damn animals did to me!

PS: If you're looking to perform better at altitude, here's a little secret I'll let you in on. Take Viagra. I kid not. Basically, it'll vasodilate the blood vessels in your lungs. This in turn allows for greater oxygen saturation of the blood, which generally decreases a bit when at altitude. Try telling your doctor that.

4 comments:

Taylor said...

Hi Chuckie,

I grew up in Park City xc skiing, mt biking, and running. I then attended UCSB and started doing collegiate triathlon. Now I am working in Goleta. My family is still in PC and I take every chance I can to go back. I have a couple questions about altitude.

When I go up there, I normally trail run and mt bike like crazy for a week or two, usually ending with a run to the top Mt Timpanogos and down. I feel like I have to take as much advantage of the trails as possible, but by the end of the trip I am exhausted. When I get back to SB, I need a few days recovery, but then I feel great. I am sure some of the feeling great is from a mental recharge after having so much fun in the mountains, but I feel like I am probably "responder."

I am wondering how training at altitude could be bad? How long does it take to get the most of the benefits from moving up to altitude, and how long do the adaptations last when going back to sea level? I am guessing that it probably varies greatly from person to person, but based on your high-tech graph it looks like 18 days for you.

Could you maybe give some general advice on what is most beneficial to do for training when moving up to altitude and when coming back down?

Razorback said...

Brain cells follow the buffalo theory. The weakest and slowest in the heard are eaten first. As a result the brain cells that survive are the fastest, strongest and best. Makes you a better man.

At least that is the theory in relation to destruction of brain cells by alcohol consumption.

Chuckie V said...

Hi Taylor,
Thanks for writing. Park City and then Goleta...damn, who's the luckiest guy on Earth?

First of all, "bad" training would be anything that left you chronically ill, injured, unmotivated or repeatedly shy of your intended race results, and that can happen anywhere, whether an athlete is in Goleta or at altitude.

Training at altitude, however, has the potential to be especially bad in that recovery is, without a doubt, compromised up high. The fact is no-one recovers up high like they do down low (another reason I'm leery of the live high/train low philosophy; you train really hard at sea level then what? Sleep at 12,000 feet? When does the recovery part of the equation come into play?). Even when an athlete is "acclimated" recovery isn't what it could be at sea level (we may be acclimatized but we'd be MORE acclimatized at sea level!). So the workouts, if not spaced appropriately (further) apart, would likely eventually lead to a general downward slide in performance. You'd be surprised how many athletes fail to grasp this elementary point. One of the key things I advise to those training at altitude is to do whatever they can to speed recovery, though I also advise this no matter where they're training.

As for your second question, you pretty much answer it yourself. Everyone who *does* adapt to altitude (i.e., a responder) does so at his or her own rate. No two athletes will respond identically but in most cases three to four weeks is enough for the athlete to adjust and adapt. And, for the most part, an athlete will maintain the benefits of that adaptation for about two to three weeks after returning to sea level. Unfortunately, there's very little by way of "proof" in this regard but anecdotally we see that most world-class athletes (who live or train high), when given the chance, descend in altitude around such a timeframe. This is basically what I'd recommend to those who are afforded such an opportunity, whether they're world-class or not.

Finally, I want to point out that being "acclimatized" really just means being used to something. Whether it is of benefit is where the debate begins!

jonathan said...

Three things:
You are indeed very yak-like and handsome. Yaks are lovely and the butter from Yaks milk goes great with tea.
That was one of the things.

It is pretty at high altitude. That has go to count for something.

And number 3.