How Does HIIT Work?

Well, your characterization and decision is disappointing.

I don’t understand how asking for one to define his terms is playing “word games.” Some would say it’s not possible to discuss an issue unless one’s terms are defined.

If you are saying that “HIIT” is superior to “steady state” but do not define those terms, linguistically speaking, you have literally said nothing.

I stated that “steady state” means what it sounds like. One brings his heart rate to a given “state” and keeps it there for a prolonged period of time.

“HIIT” involves bring one’s heart rate up to a very high level for a short period of time, and then allowing one’s heart rate to recover (or lower) before beginning the next interval. Indeed, every article on this very site that mentions “HIIT” has a person do an all-out interval (usually 20-60 seconds), and then a rest (usually 60-180 seconds).

If “steady state” means to you, “Riding an exercise bike at a slow pace,” then that would be helpful to know.

Otherwise, I have no idea what your claim is.

[quote]Zap Branigan wrote: That is the kind of running that gets you fit. Slow paced jogging sucks. A good hard 3 mile run is excellent.

I know many runners, I am from a family of runners. There are many lean well defined runners out there. They should not be compared to the out of shape Sunday joggers.[/quote]

But which is “steady state”? Both? Neither?

Or is even asking that question a word game?

I’m not trying to be snarky here. But I truly don’t understand how someone can say that “HIIT” is better than “steady state” if neither “HIIT” nor “steady state” is defined. How can you compare concepts if those concepts are not even defined?

You are talking about intent. Why?

Do sprinters intend to get bigger? No. They do intend to get stronger and faster.

So focusing on intent has not relevance at all to the discussion.

My post discussed results.

The question is: Is “HIIT” better than “steady state”? And if so, why?

Someone said “HIIT” was better. We know it’s better because sprinters are lean.

As a counter-example, I presented wrestlers. I showed that a group of people who do a lot of “steady state” work are also lean and muscular.

Notice what I did not do. I did not say, “Because wrestlers are lean and strong, one can proclaim that steady state work is the best way to get a lean and muscular physique.”

As I said in regards to the sprinter example: Correlation does not equal causation.

Just because sprinters are lean and muscular does not mean that sprinting made them that way. There could be genetic factors at issue. There could be self-selection issues. People who have the right body types start sprinting. Again, go to a jr. high track practice. You’ll see sprinters’ frames and distances runners’ frames, even though the physiques are undeveloped. You can simply tell the difference right away, at at very young age.

Just because wrestlers are lean and muscular does not mean that hours of steady state work has made them lean. Again, there could be genetic factors at issue. Also, self-selection is at play. In wrestling, those who can’t do the work wash out. So it might not be that wrestling training is superior.

I think one can get lean doing “steady state” work and doing “HIIT” work. I’ve never said otherwise.

I will say this: No one has proven which is superior. And using sprinters’ physiques as proof is logically fallacious, so that clearly doesn’t establish proof of anything.

One last post, since people love anecdotes.

Come to Gold’s in Venice. Go to the back of the cardio room. Watch the biggest and leanest guys doing cardio.

None of them are doing HIIT. They all do steady state cardio - and at a very slow pace and for a very long time.

So clearly lean and muscular people are doing steady state work.

Some will thoughtless say, “Drugs!” Which is silly, since sprinters use steroids, too.

Does this mean steady state work is best for fat loss? I’m sure not saying that.

But one might ask: Are bodybuilders doing it wrong?

Are the coaches who do contest prep work for bodybuilders missing the boat by having their clients do 60 minute a.m. and p.m. sessions of steady state cardio?

That’s a mighty big claim. Results tend to speak for themselves. By making that claim, you are saying, “I am right and everyone else is wrong.” That’s big stuff. As Dave Hume would say, Extraordinary claims require extraordinary evidence.

Saying, “Look at sprinters” is far from extraordinary evidence. In fact, it’s not even valid evidence at all.

Cheers.

One last post, just so I’m clear.

Bodybuilders start off fat. Then do steady state cardio, and end up lean.

Sprinters start off lean. Again, go to any youth track team for proof of this. These are not chubby kids who start sprinting and suddenly look like sprinters.

Sprinting, then is not making sprinters lean.

Steady state cardio is making bodybuilders lean.

So if I am fat and want to get lean, which is the group I should look to immitate?

Again, it might be that “HIIT” is the right answer. But using a group that is already lean when they began sprinting, for proof that sprinting is how one gets lean… is a bit unusual.

CaliLaw - I will chime in as I think I can see both points.

Steady State is usually defined as a continuous level of work for example walking, jogging, or cycling at basically the same pace the entire time and it almost always lasts more than 5 minutes and is usually 20+ minutes, up to several hours.

The fact that the heart rate might rise and stay elevated is not the key point, the key point is the activity is virtually identical throughout. For example, I can’t comment on the wrestling practices you were referring to but a wrestling match, or a MMA bout or a boxing match or a soccer game or a tennis match would NOT be considered steady state at all.

In each of those examples there are periods of brief intensity (trying to flip someone over or avoid a move) and periods of lower intensity (being on all 4’s catching your breath, pulling guard and recovering briefly, etc). Pretty much it has to be a traditional, cyclical aerobic activity to be considered steady state.

I would suggest that HIIT be defined as performing a difficult work period that could not be maintained for more than 5 minutes, and often for just 1 or 2 minutes, followed by a period of easier activity for a roughly similar period of time.

In regards to the bodybuilder thing, whatever you have more of you burn quicker. Super fat people have a lot fat and so they use that up pretty quickly in the beginning (ala Biggest Loser).

Bodybuilders have more muscle and so are the most likely to burn off muscle when exercising if it is intense. HIIT has the likelihood (relatively high likelihood if you are on a diet and weight training at the same time) to burn muscle and fat.

Steady state cardio is (IMO) definitely the way to go for them because it will not burn much if any muscle, but it has to be done long and frequently to be effective. Not everybody has that kind of time, and HIIT may be better at improving the VO2 max which bodybuilders don’t care about but most other athletes do.

Wresting at “High Intensity” for short period of time, break, Wrestling, break, Wrestling.

The wrestling is done at a “High Intensity” while the wrestle/break set up is by definition an “interval”. So far we have “High Intensity Interval”, lets add training to that which would encompass how they prepare to wrestle. In most cases it is done by wrestling which follows the same Wrestle/break format, in other words HIIT.

Just because wrestling doesn’t conform to the optimal recommendations of some coaches does not mean that wrestling is not another form of HIIT.

I understand that during wrestling practice they are usually trained with some steady state or as you said a 2-3 mile warm up. That in itself may just be tradition and erroneous. In your own example CalLaw you stated that at a time during practice they would wrestle for 5 minutes then a break to change partners; again, another form of HIIT, just with modified intervals.

I make the case that wrestling is another form of HIIT and not steady state.

So, it sounds like HIIT - I will assume most of you agree that HIIT is not good when glycogen stores are depleted, i.e. when low-carb most of the time - is best on a carb up day or during a bulk to minimize fat gain (and perhaps maximize nutrient partitioning).

Yes? No?

[quote]CaliforniaLaw wrote:
andersons wrote: Of course they had muscle. And they lifted weights. But when they ate, and when they trained, they did not worry about preserving muscle. At least I never heard them mention it. They just focused on staying in their weight class, or making weight.

You are talking about intent. Why? [/quote]

Never mind.

Not all sprinters are big. I noticed at this year’s olympics that there were quite a few who had a skinny body type, versus the full, round muscle type.

I have also seen this at the university level, where one of my students who had never competed before joined the track team and won meets at the regional level. He just looked like a really skinny kid.

[quote] The question is: Is “HIIT” better than “steady state”? And if so, why?

Someone said “HIIT” was better. We know it’s better because sprinters are lean.

As a counter-example, I presented wrestlers. I showed that a group of people who do a lot of “steady state” work are also lean and muscular. [/quote]

Your counter-example sucks because wrestlers MOSTLY do high-intensity interval stuff. Short periods of all-out muscular effort, followed by periods of low effort.

Their “steady state” stuff, while it may be steady state, is actually high-intensity, relatively short-duration steady state. A hard 2 mile run is different than a slow 20 mile run. And it is a small part of their overall time training.

And in fact, the highest weight class guys, who tend to be much fatter than the ones who are trying to make weight, are also much slower, and their matches have longer sustained grappling rather than the short bursts. So if anything, this is yet another correlation of leaner physiques with high-intensity bursts of activity.

So your “counter”-example is actually more of an example.

[quote] As I said in regards to the sprinter example: Correlation does not equal causation.

Just because sprinters are lean and muscular does not mean that sprinting made them that way. There could be genetic factors at issue. There could be self-selection issues. People who have the right body types start sprinting. Again, go to a jr. high track practice. You’ll see sprinters’ frames and distances runners’ frames, even though the physiques are undeveloped. You can simply tell the difference right away, at at very young age. [/quote]

Your reasoning here would be fine IF there weren’t any direct evidence about this stuff. Your reasoning would lead to the conclusion that several possibilities for causation exist, therefore nothing is known.

But there IS direct evidence. There ARE many experiments (experiments manipulate a variable and therefore CAN show causation, not just correlation) showing HIIT to be superior for fat loss.

Coupled with the WIDE observation that people who do a lot of high-intensity stuff have leaner, more muscular physiques than people who do a lot of long-duration, low-intensity stuff. (I think long-duration, low-intensity is a better characterization than the more ambiguous “steady state.”)

Furthermore, there is MUCH STRONGER empirical evidence for the effect of adaptation through training than there is for self-selection. Self-selection SOUNDS like it would be true and a very strong factor, but the evidence for it is very weak. For example, countries that have tried to identify children at a very young age who are suited for different types of athletic activity fail to predict future success. You cannot take a child and predict from his body type and muscle fiber makeup his future success in a sport. These predictions are no better than chance.

I have studied LOTS of research on this as part of my former research specialty. The funny thing is, there are lots of people, and it sounds like you are one them, who, no matter how much evidence there is for training adaptation and almost no scientific evidence for genetic factors as a predictor of success in athletics (or any other field of expertise for that matter), just simply won’t believe it.

But the questions you’re posing have already been asked by scientists, and the answer is overwhelming that the effect of adaptation to training explains over 90% of the variance of success in athletics, chess, tennis, golf, and music.

I realize it’s hard to believe genetics plays NO role. HOWEVER, if it does, there OUGHT to be some measurable characteristic that one could use to predict future success. But no one can! You go pick out some kids that based on body type you believe will be good at wrestling, or good at sprinting. Then pick out some kids you think will not be good. Have both groups train for their sports, and you will find that the chance of future success is about the same.

That is what the coaches and scientists in the Asian and Eastern European communist countries found.

And do not misrepresent what I’m saying here. I am NOT saying that genetic differences do not exist. They do. But among those who have achieved a level of success in any field, training accounts for nearly all the variance of achievement. And most importantly, attempts to identify those with physiology best suited for success in an athletic skill have failed.

[quote] I think one can get lean doing “steady state” work and doing “HIIT” work. I’ve never said otherwise.

I will say this: No one has proven which is superior. And using sprinters’ physiques as proof is logically fallacious, so that clearly doesn’t establish proof of anything. [/quote]

You’ve got your own logical fallacies going on here.

For one thing, you cannot prove a universal negative. You cannot say “No one knows, no one has shown” unless you have read EVERY study and observed EVERY observation and found it not to exist.

Sure, you can get lean doing “steady state” work. No one said you couldn’t. So you are also mischaracterizing the opponent view (straw man fallacy).

However, just because one can get lean doing “steady state” doesn’t mean HIIT couldn’t be superior (by, say, achieving the same in less time). This is another general flaw in your reasoning.

Based on the evidence I’ve seen, this is what I think:

  • it is rare to see a lean, muscular person who does NOT do some form of high-intensity or explosive training, keeping in mind that weight lifting itself is high-intensity

  • in fact, lean, muscular people tend to do a LOT of high-intensity training

  • people who do a lot of long-duration, low-intensity training, like distance running, and little to no high-intensity training, tend to not be as lean or as muscular as those who do the opposite

  • experimental data also suggest that HIIT is superior for fat loss, compared to steady state cardio in the “fat burning zone”

  • since weight lifting is high-intensity, a lot of weight lifting limits the amount of HIIT, such as sprints, one can do because of recovery issues. This is why a bodybuilders would obviously choose low-intensity cardio to shed fat, not necessarily because it is superior to HIIT, but because it better fits the rest into the rest of the training/recovery program.

I don’t see the need for all the controversy. IF a person is going to do ONLY cardio, like the many people who go to the gym and hop on the treadmill, they’d likely be better off doing HIIT than lower-intensity, steady-state stuff, at least in terms of results per minute. However, if other high-intensity stuff like weight training is a priority, low-intensity cardio may be the fat-loss tool that best fits the overall program. Also, low-intensity is probably a more appropriate tool for people who are extremely overweight, have major joint issues, or who have been very sedentary for a long time (or in some cases, all of the above).

[quote]andersons wrote:

I realize it’s hard to believe genetics plays NO role. HOWEVER, if it does, there OUGHT to be some measurable characteristic that one could use to predict future success. But no one can!

You go pick out some kids that based on body type you believe will be good at wrestling, or good at sprinting. Then pick out some kids you think will not be good. Have both groups train for their sports, and you will find that the chance of future success is about the same.

That is what the coaches and scientists in the Asian and Eastern European communist countries found.

…[/quote]

Nonsense.

Andersons - I don’t understand how you can say that “grooming” the kids by selecting them for certain sports is not effective. A good chunk of the entire Olympics was devoted to the fact that the Chinese go around and test kids for certain things and then based on those variables place them in a sport.

The simple medal count for China (and Russia in the past when it was more state sponsored) proves the effectiveness of this method, and if they stick with it I think in 20 years it won’t even that close as they will win easily.

[quote]Otep wrote:
“Metabolism” is a catch-word. What’s really burning calories after the exercise is over?

I really don’t want to start a HIIT vs. Steady State cardio argument. I’m hoping someone more knowledgable about biology and science can elucidate the mechanism that’s alluded to but never mentioned by studies on EPOC.
[/quote]

So

  1. no one knows
  2. maybe gH
  3. HR elevation PWO.

Cool, thanks guys.

I’m digging your Cliff Note communication MO, Otep.

Did you attend some Tony Robbins seminar recently?

:slight_smile:

[quote]PonceDeLeon wrote:
I’m digging your Cliff Note communication MO, Otep.

Did you attend some Tony Robbins seminar recently?

:)[/quote]

No.

And I seriously tried to think of some sly, witty ‘awaken the giant’ reference for like ten minutes before just letting it go.

[quote]Tim Henriques wrote:
Andersons - I don’t understand how you can say that “grooming” the kids by selecting them for certain sports is not effective. A good chunk of the entire Olympics was devoted to the fact that the Chinese go around and test kids for certain things and then based on those variables place them in a sport.

The simple medal count for China (and Russia in the past when it was more state sponsored) proves the effectiveness of this method, and if they stick with it I think in 20 years it won’t even that close as they will win easily.[/quote]

In the data I have seen, yes, they have plenty of successes – kids they pick and train who become elite. It’s the proportion of failures, the ones who were predicted to become elite but don’t, that suggest that the predictions aren’t that great. In other words, it’s the athletes you DIDN’T see at the Olympics.

Now you cannot prove a negative, so the lack of predictive success so far (the last I reviewed this literature was around 2001) doesn’t mean it is not possible. But it DOES mean that the obvious, intuitive characteristics that people thought they could use to predict future success were not very useful.

And it’s yet another (of many) findings that fail to find a strong link between genetic factors and skill.

From the standpoint of scientifically valid support, the positive hypothesis has the burden of proof; the people who believe it is possible to predict elite athletic success in young children (that would be you, Zap) need to provide positive evidence.

If it is so easy to predict, it should be easy to prove. To prove that the skill was from genetics, and not from training, the time spent training must be factored out. Every time they factor out time spent training, nothing is left.

I don’t consider the data conclusive because we would really need to randomize subjects to training times, and that’s not possible. But it has been amazingly hard to find any evidence for genetic factors for high levels of skill that cannot be attributed to more training.

The advantage of the Eastern Europeans was that they started the kids early and made them train and provided them expert training from the beginning. The kids who they didn’t think were doing so well, they dropped.

If their initial testing was so great, they shouldn’t have had to do any dropping. After accounting for the extra training time and expert training, there was nothing left to account for. It’s not like the Russians had better genetics for these events 30 years ago, but now the Chinese do.

Andersons - are you saying that if you took 10 elite men and women in the same sport, paired them and they each produced a kid, there would not be a statisical difference between those kids’ ability and 10 normal kids ability if both groups of kids spent the same amount of time training?

Do you think the same is true for animals (that there is no strong statistical link between performance and genetics?)

[quote]Tim Henriques wrote:
Andersons - are you saying that if you took 10 elite men and women in the same sport, paired them and they each produced a kid, there would not be a statisical difference between those kids’ ability and 10 normal kids ability if both groups of kids spent the same amount of time training?

Do you think the same is true for animals (that there is no strong statistical link between performance and genetics?)[/quote]

I don’t know. You might see a difference if you could do that experiment. But I think the difference would be smaller than you would expect, for the following reasons. First, there tends to be regression to the mean. Really tall people tend to have taller-than-average children, but not as tall as themselves, etc. So if there were some genetic factor in the elite athletes, their children would tend to have less of that factor, going closer to the average.

Second, the effect of training is huge. It always confounds the genetic factor when you’re trying to find irrefutable evidence for genetics. For example, children of great athletes are often also good or great athletes, sometimes even better than the parents, but you have to account for the training and motivation effect, where the parents encourage and provide expert training, or even demand it, and at a very young age, when it has the most impact in critical periods of development. In the real-world observations (with no selective breeding), after you account for the effect of the training, you can’t prove a significant genetic factor.

Third, there are documented cases in the literature, where parents with no skill in a certain domain (music, chess, and tennis are examples I have seen) determined that they were going to develop their kids into an international level of expertise in that area. They provided and encouraged expert training from an early age, and after 10,000 hours, their kids were internationally ranked. (Obviously, this is fairly uncommon.) Note that all the other internationally ranked experts, who were believed to have “talent” at an early age, also had accumulated the same 10,000 hours of training.

So based those observations, I would predict that training would mightily blur, if not overwhelm, the difference in parents in the example you gave. In this experiment, you’d have to take the 20 children after years of training, measure their performance, and then guess what type of parents they had. If all the children had the same expert training and number of training hours, I think it would be hard to determine their parents based on performance differences with statistical certainty. It wouldn’t be surprising how good the elite-parents’ kids were, but what would be surprising to many people is just how good the average-parents’ kids would be.

When animals breed naturally and self-select their mates, they get regression to the mean, keeping population averages stable. But obviously, animals can be bred, or genes manipulated, to produce different characteristics and abilities. There are strains of rats now with every imaginable characteristic, like lean ones with favorable leptin genes. But to get these strong characteristics, there are many generations of selective breeding, not just one, and sometimes direct gene manipulation. I am certain that similar strong characteristics would be possible for humans if they were to be bred selectively over many generations, and/or to have their genes manipulated as is done with animals.

Overall, though, based on the data for real-world achievement, most people way overestimate genetics and way underestimate training when it comes to actual achievement. People think it is hard to overcome genetic limitations with training, while the data suggest it is hard to overcome superior training with just genetics.

[quote]andersons wrote:
… People think it is hard to overcome genetic limitations with training, while the data suggest it is hard to overcome superior training with just genetics. [/quote]

Then the data, or the interpretation, is flawed.

Pro sports are loaded with people whose parents were great athletes. Genetics + hard work beats all. Hard work with the wrong genetics only takes one so far.

Andersons - thanks for your point. Ultimately I disagree with you. I think you are looking at it as a Nature vs Nuture dichotomy and not seeing the two as intertwined. I am happy to continue to discuss it more if you wish, but in my mind the evidence is overwhelming and the purpose of futher debate would be to simply “convince” you of that fact which I can see might have little appeal for both of us. Cheers.

Who said they were not different? Where, do tell, did I say that running hard would not give better results than reading Home & Garden while pedaling a bike?

You made a long-winded post, and even threw in some ad hominems (calling me someone who ignores evidence).

It is obvious you are in love with yourself, and consider yourself quite knowledgeable. Yet you cannot do something as fundamental (and basic) as defining your terms:

  • Define HIIT;
  • Define steady-state.

You’re afraid of defining your terms, because you know I’ll crucify you. You simply cannot refute my arguments, so you’ll just pretend I didn’t make them.

You also ignored the bodybuilder example because you simply cannot refute the fat-loss results bodybuilders see. Again, none of them do “HIIT.” Yet they lose a lot of fat. Ignore that, since it’s too hard to refute!

Until you define your terms, it is impossible to discuss these issues. Incidentally, I defined my terms. What is wrong with my definitions?

I will educate you, giving you an example why one must define his terms.

Imagine I say the following: “Green tart” is better than “sherry blue” for fat loss. Do you agree or disagree?

That’s right! If I don’t say what “green tart” or “sherry blue” are, then you can’t say. Because you don’t know WTF I am talking about.

Likewise, if you won’t say that “HIIT” or “steady state” are, then we can’t discuss which is better. You might assume that the definitions are widely known. Yet the very language of yours I quoted shows that you don’t. (You tried waffling, by calling a hard 3 mile run “high intensity steady state of a relatively short duration.” No one was fooled.)

Hence, your entire post was worthless, and was mainly an exercise designed to make yourself feel smart. The irony of your post’s result will give me a nice laugh on my way to the gym to do some steady state cardio.

Stay inside the echo chamber, man. Because when you step out, you sometimes run into free thinking guys like me who crush your infantile arguments like fat ladies in high heels stepping in egg shells.

Waits for someone who cannot refute my arguments to call me a “troll,” “big meanie,” or “hater.”