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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!

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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.