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> "but hiit also causes a lot of damage in a lot of ways"

Please do explain this.

Technically weight lifting (muscle hypertrophy) also causes "damage" but in a controlled an beneficial way.

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I really think you're being pedantic to the point of detriment. Runner's knee is a very well known condition in, wait for it, runners!

https://www.mayoclinic.org/diseases-conditions/patellofemora...

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Seems to me hiit is a way to avoid these overuse injuries.
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I think runner knee was a bad example.

Sprint running is more sensitive to form in order to avoid injuries, especially in older adults.

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I would guess they mean hiit can traumatize e.g. joints or cardiovascular system, especially for the elderly.
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The hyper rationalist cult on HN has created a race to see who will be the first to claim "this is a fairly poorly executed study".

It really impresses the crowd here if you ignore all limitations introduced by reality, and fail to clearly even assert the requirements that would result in an "adequately executed study."

Bonus points if you finish your shallow skepticism by redirecting the conversation in the direction of your original preheld biases.

Double bonus points if you fail to link to a study that both supports that preheld bias and meets your own standards for how studies should be conducted.

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"hiit also causes a lot of damage in a lot of ways"

Oh! I didn't know about this. Are there any references you could quote?

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Just ask the orthopedists down the street from any CrossFit box.

Or their journal articles.

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Hiit training can use any type of exercise that allows quick change of pace. Hiit ala tabat is just cycling.

Crossfit afaik is a more complex affair than just cycling.

So is the risk of injury due to specific movement or the interval quality of the movement?

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