Skip to main content
5 votes

Why is it impossible or nearly impossible to burn high levels of fat near VO2 max intensity?

The reason why it's hard to burn fat during high intensity exercise is that it's a slow and inefficient process of getting energy to the muscles. Your body will switch to using glycogen aerobically ...
Wood's user avatar
  • 497
5 votes
Accepted

How quickly will my VO2 max fall off if I stop all exercise?

The negative effect on VO2max due to detraining varies a bit with different studies, with losses ranging from 4-14% when training is stopped for less than 4 weeks [1-8]. Obviously, the longer the ...
bantandor's user avatar
  • 812
5 votes

Max heart rate: is it bad to train in Zone 5 for 30 mins?

There is a simple answer that lies in both your question and in the chart you provide. Your question says, “…is it bad to train...”. Training implies you are trying to improve. Zone 5, is not ...
Brian's user avatar
  • 51
4 votes

Energy expenditure (calories burned) equation for running

Pretty late to the party on this one but thought it was worth adding that the JavaScript behind the runners world calculator is pretty simple. Looking at the function toolSubmit (which is called when ...
edwardc's user avatar
  • 51
4 votes

Why am I unable to run as fast as I should be able to, based on my VO2max

VO2max is the amount of oxygen which your cells are able to convert into CO2. It doesn't say anything about the anaerobic threshold, for that you need to do a Conconi test (there are many variants of ...
Marcus's user avatar
  • 222
4 votes
Accepted

Why am I unable to run as fast as I should be able to, based on my VO2max

VO2 max is the amount of oxygen available for energy burn and is associated with runs that are shorter than 5-8 minutes total. Anything longer than this your body must deal with lactate acid buildup ...
Jason's user avatar
  • 1,558
4 votes
Accepted

Running, high HR, VO2max decreases overtime

VO2max is not super important for 10k. It's correlated with performance, but it's not a good predictor. (Source) Don't worry too much about HR or VO2max. You should focus on performance. If you're ...
Wood's user avatar
  • 497
4 votes

If you only have two sessions a week to exercise, what type of exercise is ideal for general health?

There is no peer reviewed data on this, because the question is far too niche and the required period of observation far too long for that to be practical. No-one is running a study where they take a ...
David Scarlett's user avatar
4 votes

Measuring VO2max on stationary bike

First, it is worth noting that non-exercise tests are especially inaccurate at determining both VO₂max and changes thereto. One study examining a host of different methods, including that described by ...
POD's user avatar
  • 6,181
3 votes

What level of seasonal variation in VO2 Max should I expect

It's plausible, one paper shows a ~7% worse VO2 max during winter compared to summer in healthy men. Running is a great sport where the only participate is you and the variables are, allegedly, all ...
joeyfb's user avatar
  • 222
3 votes

Why doesn't my Garmin VO2 max estimate agree with the Cooper test estimate?

Not an answer per se, but here's, to my knowledge, the whitepaper Garmin used for their VO2max calculations : https://assets.firstbeat.com/firstbeat/uploads/2017/06/white_paper_VO2max_30.6.2017.pdf ...
Charles Martin's user avatar
3 votes

Why do elite cyclists seem to have higher VO2 max tham elite marathon runners?

I'm not positive about the premise here. There are certainly cases of runners having cyclist like VO2 levels. Also, cyclists are way more testing conscious. The fact of the matter is elite cycling ...
b-reddy's user avatar
  • 1,677
3 votes

Formula for Rep max?

There is a handful of "accepted" formulae to calculate one's 1RM based on other xRMs. In fact, there's a nice Wikipedia article that lists them: https://en.wikipedia.org/wiki/One-...
Alec's user avatar
  • 17.9k
3 votes

How accurate is Garmin's VO2 max estimate?

Garmin use the VO2 data supplied to them in tabular form from the Cooper Institute, for example here is the table for age 14 females: https://www.cooperinstitute.org/vault/2440/web/files/732.pdf You ...
John's user avatar
  • 6,982
2 votes

Max heart rate: is it bad to train in Zone 5 for 30 mins?

I'm basing a lot of this on my own personal experience so, by all means, take it as anecdotal if you'd like. I started exercising the week of my 34th birthday (about 8 months ago) after having ...
Frank's user avatar
  • 1,297
2 votes
Accepted

What exactly do fitness guides mean when they give a relative V̇O₂max?

Yes, V̇O₂ is “the weight-normalized volume rate of oxygen that is consumed during training,” expressed in ml/min/kg, but more fundamentally, it is a metric for the time-rate of energy production. Thus,...
POD's user avatar
  • 6,181
2 votes
Accepted

Does a VO2 max test have a mental discipline component?

TL;DR A well-done lab test shows when you are not going all out. Will-power is more about where the power goes (and how much of your max power output of your individual muscles you are able to use), ...
Philip Klöcking's user avatar
2 votes

Why fast before a V02 max test?

For caffeine, it is a mild stimulant. Especially if you are not used to drinking caffeine, it can artificially elevate your heart rate, and give a false reading. That is why the advisory against ...
JohnP's user avatar
  • 23k
2 votes
Accepted

How can fitness trackers estimate VO2 max without knowing how hard the exercise is?

No, the fitness tracker cannot tell that exercise has changed. This will result in a skewed value. Fitness trackers usually look at your age, weight, sex, heart rate, overall fitness level, and effort ...
C. Lange's user avatar
  • 4,589
1 vote

Why doesn't my Garmin VO2 max estimate agree with the Cooper test estimate?

Just to add some (hopefully) useful information - one issue is that the Cooper test estimate is highly uncertain. I got Cooper's paper from 1968 Cooper, Kenneth H. (15 January 1968). "A Means of ...
Dikran Marsupial's user avatar
1 vote

Correlation of %VO2max and heart rate

If you search "vo2 vs heart rate relationship graph" on Google images you'll find that the graphs look fairly linear (at least, during exercise). This would indicate that your assertion is ...
Justin Skycak's user avatar
1 vote
Accepted

Zone 2 on stationary bike

It's nice that you are inquisitive about incorporating differing kinds of exercise into your coaching routine! it is important to notice that there's no direct conversion between treadmill speed and ...
Liam Poropat L.'s user avatar
1 vote

How accurate is Garmin's VO2 max estimate?

TL;DR summary: Not very - don't take the absolute value too seriously, but changes in the estimate may be a more useful guide. There seem to be two parts to this: Firstly, it is possible to estimate ...
Dikran Marsupial's user avatar
1 vote

If I'm training only for 5k, can I do mostly VO2 max training workouts?

V̇O₂max work rate can typically be held only for around 8 minutes or so, so you're not going to be racing at V̇O₂max pace. And while the pace will be "close", it's in the nature of endurance that ...
user7761803's user avatar
1 vote
Accepted

Converting between %VO2Max and %HRMax or %LTHR

When you perform aerobic exercise, your body utilises oxygen to perform work. As you increase the amount of work you do, the amount of oxygen used—oxygen uptake—increases until it has hit a maximum. ...
user7761803's user avatar
1 vote

How do I Measure cardio fitness by heart rate?

There is actually a very easy way of checking the strength and fitness of your heart using a heart rate monitor: measure your resting heart rate. Anything below 60BPM is better than average. Below ...
J. Heller's user avatar
  • 168
1 vote

VO2 max per split vs per run

V02max is more of an absolute number. Think of it like testing your max bench, or max vertical jump. It's the maximum amount of oxygen you can uptake at the time of testing. Something you can track ...
Darren Beattie's user avatar
1 vote
Accepted

Is there any relationship between blood types and VO2Max?

Your question assumes that each blood type offers a different capacity to carry oxygen. Without going into scientific explanations, the easiest way to answer the question is to understand the role of ...
rrirower's user avatar
  • 6,690

Only top scored, non community-wiki answers of a minimum length are eligible