4 ms·

I'm sorry, but how does this work? HIIT, for example, gets me up to requiring 40 breaths per minute for the oxygen. There is simply not enough airway cross-sect

by caeril 4y ago

I'm sorry, but how does this work? HIIT, for example, gets me up to requiring 40 breaths per minute for the oxygen. There is simply not enough airway cross-section across the nose to take in air at this rate. During allergy season, when one nostril is completely blocked, it's impossible to do for even basic metabolic function.

nanomonkey 4y ago
The whole point of HIIT is to tax your aerobic system. One can easily do work outs within the ranges of energy production that don't go into anaerobic respiration. For example you can do high load lifting in short burst and just use your ATP stores, which generally means for a count of 10 or less, with enough time in between to replenish the ATP fully. Or you can do aerobic exercise at a pace where your body has enough oxygen to always be using glucose to keep up with ATP usage (Zone 2 training). The original author probably was limiting their bicycle cadence to something that they could do continuously with their nose closed. I personally do something similar while running and weight training. It was hard at first, but your body gets stronger and more capable at exchanging CO2 over time. I wouldn't try this with HIIT though, and generally think that HIIT is a terrible training methodology as it leave you sore and incapable of doing more work outs as the processing of lactic acid is harmful if not damaging to muscle cells.
- User23 4y ago
  > For example you can do high load lifting in short burst and just use your ATP stores, which generally means for a count of 10 or less, with enough time in between to replenish the ATP fully This is true, but you rarely see anyone actually doing it at the gym. It’s been a while but I recall that fully replenishing ATP requires around 3 minutes between sets, and most people rest for less than half that.
  - nanomonkey 4y ago
    You're correct, although ATP is generally replenished to around 70% after a minute, and is muscle dependent, so you can work on another muscle group while one rests. I generally do a set of 10 or less, wait 1 minute, do another set and then do some yoga for the remainder of 3 minutes. I then switch to another muscle group and do the same. When I switch back to the original muscle group an additional 3 minutes have past or 5 minutes since the last set for that group. This allows for some oxidative stress, which stimulates mTor and thus mitochondrial growth, but also allows me to do more sets in a work out in less amount of time. I'm generally done in 30-45 minutes, but work out daily at home. While ATP takes a good amount of time to replenish, lactic acid take twice as long to clear out. So you really need to be resting 8-10 minutes between HIIT work outs, or just go home from the soreness. This doesn't seem as ideal if you don't want to spend all day in the gym.

by caeril 4y ago

nanomonkey 4y ago

The whole point of HIIT is to tax your aerobic system. One can easily do work outs within the ranges of energy production that don't go into anaerobic respiration. For example you can do high load lifting in short burst and just use your ATP stores, which generally means for a count of 10 or less, with enough time in between to replenish the ATP fully. Or you can do aerobic exercise at a pace where your body has enough oxygen to always be using glucose to keep up with ATP usage (Zone 2 training). The original author probably was limiting their bicycle cadence to something that they could do continuously with their nose closed. I personally do something similar while running and weight training. It was hard at first, but your body gets stronger and more capable at exchanging CO2 over time. I wouldn't try this with HIIT though, and generally think that HIIT is a terrible training methodology as it leave you sore and incapable of doing more work outs as the processing of lactic acid is harmful if not damaging to muscle cells.

User23 4y ago
> For example you can do high load lifting in short burst and just use your ATP stores, which generally means for a count of 10 or less, with enough time in between to replenish the ATP fully This is true, but you rarely see anyone actually doing it at the gym. It’s been a while but I recall that fully replenishing ATP requires around 3 minutes between sets, and most people rest for less than half that.
- nanomonkey 4y ago
  You're correct, although ATP is generally replenished to around 70% after a minute, and is muscle dependent, so you can work on another muscle group while one rests. I generally do a set of 10 or less, wait 1 minute, do another set and then do some yoga for the remainder of 3 minutes. I then switch to another muscle group and do the same. When I switch back to the original muscle group an additional 3 minutes have past or 5 minutes since the last set for that group. This allows for some oxidative stress, which stimulates mTor and thus mitochondrial growth, but also allows me to do more sets in a work out in less amount of time. I'm generally done in 30-45 minutes, but work out daily at home. While ATP takes a good amount of time to replenish, lactic acid take twice as long to clear out. So you really need to be resting 8-10 minutes between HIIT work outs, or just go home from the soreness. This doesn't seem as ideal if you don't want to spend all day in the gym.