# Questions tagged [vo2max]

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### Why fast before a V02 max test?

A few sources online, like this one, say that an athlete should fast for 4 hours and abstain from caffeine before a standard lab V02 max test in which a mask measures air inhalation and expiration. By ...
112 views

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

Fitness trackers often rely on heart rate, GPS, and possibly type of activity to estimate VO2 max. But, what if the user switches between an easier means of exercise and a harder one? For example, ...
336 views

### Apple Watch VO2 Max is Very Low

Does anyone else have an Apple Watch and/or iPhone that is reporting a very low VO2 max? I've never had mine tested and I haven't been running much lately, but a year or two ago I used to run 8 miles ...
121 views

### Formula for Rep max?

I can find 1 rep max using Brzycki but I'm not able to find other values greater than 10 rep max. How can I find more than 10 rep max values; are there any formulas? In the above image they are ...
93 views

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

Take the following quote from Jack Daniels – Daniels' Running Formula (2014) as an example: [...] E running is typically performed at about 59 to 74 percent of V̇O₂max [...] Here, the author seems ...
200 views

### Converting between %VO2Max and %HRMax or %LTHR

Some articles suggest training at specific percentages of VO₂max. If I know my VO₂max, HRmax, lactate threshold and resting heart-rate, is there a straightforward way to determine heart-rate ...
179 views

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

Based on various calculations, I should, purely based on my VO2max, be able to run 10k in under 40 minutes. However, my PR is closer to 50. Why is this the case? My VO2max was calculated at 59.9 ml/...
79 views

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

Around moderate exercise intensity, we tend to burn fat at the highest rate. When we exercise near or above VO2 max, we burn almost no fat. Why can't we achieve high levels of fat oxidation near but ...
121 views

### Running, high HR, VO2max decreases overtime

Man, 31 years old. I started running five months ago. Because I often finish of my work late and having children, I often run only once on weekend except for last summer vacation while I run about 3 ...
105 views

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

Advanced 5k training programs often recommend high mileage. For example, 20km a week. Studies show that HIIT and sprint interval training can produce similar or even greater increases in mitochondria ...
142 views

### Is maximum heart rate one of the main reasons for VO2 max trainability?

For improving VO2 max, it's recommended that our heart rate is above 90% of its maximum during our hard workouts. If we run too slow on our fast days or run too fast on our easy days, we could plateau ...
194 views

### VO2 max per split vs per run

If I calculate the VO2max on each split of a run using the formula from here. Would the VO2max estimate for the entire run be the mean of all the splits?
64k views

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

I recently got a heart rate monitor and have been trying to beat my time each week on the exercise bike. I'd say I'm in pretty good shape. During the 30 mins workout I am in zone 5, with an average ...
89 views

### How do I Measure cardio fitness by heart rate?

What are good protocols for measuring cardio fitness with a heart rate monitor? How can I have efficient training and get good measurements at the same time? -- The idea is to have something ...
769 views

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

For example, Chris Froome's VO2 max was 84.6. Some were at least 90! http://blog.trainerroad.com/how-vo2-max-work-makes-you-fast-the-science-behind-it-all/ While marathon runners seem to fall between ...
18k views

### Energy expenditure (calories burned) equation for running

There are numerous online calorie calculators for running (e.g. from runners world). What is the underlying formula for calculating energy expenditure while running? This post has an excellent ...
3k views

### How accurate is Garmin's VO2 max estimate?

I have a Garmin fenix 2 that gives me an estimate of my VO2max. I use the watch with a Scosche rhythm+ strapped to my arm. I am interested in knowing how accurate Garmin's estimate is? Along with ...
193 views

### Is there any relationship between blood types and VO2Max?

The (unsophisticated) idea that different types of blood might have different abilities to absorb oxygen/ different concentrations of red blood cells has me wondering!
392 views

### How does Vo2max dieting differ from normal gym more endurance-training dieting? How much intake is enough?

This is my second week of vo2max training where each week has 2 rest days. I train the whole body during the week. I need to eat a lot. If I am not eating enough, catabolism wakes me up. I already ...
155 views

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

I have been exercising regularly for about 2 years and completed my first half Ironman earlier this year. I am currently recovering from ACL injury (from recreational basketball game). It has been ...
1k views

### Metabolic Equations for Anaerobic Exercise?

I know several metabolic equations for estimating VO2 (and therefore calories burned) for steady state exercise, but how is VO2 and caloric expenditure estimated through exercises like power lifting ...
506 views

### Can you calculate % of V02 max at which you're working using pulse ox readings?

Can you calculate % of V02 max at which you're working (assuming it's >100%) by measuring change in blood oxygenation with a pulse ox? My understanding is that working at >100% VO2 max means you're ...
363 views

### Is my cardio routine too intense?

Because I get shin splints easily, I do cardio workouts by walking up steep inclines. My routine is this: I raise my heart rate to 180 for 30 minutes straight with only a water break in the middle. ...