That would definitely explain the large numbers of feisty old Judoka I meet around the world. Anecdotally, there seems to be a higher percentage of healthy older individuals doing Judo than the general population, but I guess the unhealthy ones wouldn't still be at it, so it self selects for that trait.
Judo practitioners might be a good population to study for this effect, if you could find the individuals that started and track them all, including the dropouts. It would have common traits of strong grip AND muscle memory of how to fall properly, which could be a confounding factor.
Judo practitioners might be a good population to study for this effect, if you could find the individuals that started and track them all, including the dropouts. It would have common traits of strong grip AND muscle memory of how to fall properly, which could be a confounding factor.