I recently updated my book about muscle strains with more scientific detail about the exact mechanism of hamstring strains, particularly explaining the dominant theory, and then looking at who disagrees and why. Here’s a good sneak peak behind the paywall, including 8 footnotes visible only to logged-in PainSci members. Most muscle tears happen during contractions that are not only eccentric, but fast and powerful.12 They are most common in sprinting, for instance, and the harder you run, t...
