Honestly, that depends quite a bit on genetics. I, for example need to run semi-regularly to pass, but even a couple times a month and then a couple times a week the month leading up to the test is sufficient. I have to do similar for push ups and sit ups. I am not complaining, I am genetically predisposed to perform poorly in these areas so I make an effort to compensate and I do well, everyone has weaknesses they need to overcome and natural baseline fitness is mine. But that said, if realistically to just pass, someone like me who had this weakness can pass with just a couple workouts a month and a few a week leading up to the test, there is no excuse for failing. That said, I work put significantly more than this but I am just discussing the minimum I require.