A while ago I met a guy who was representing his country in swimming as junior. He said, that for every swimming season (6 times per week) they have session in gym, because, in his words:
Swimming is about strength!
I do some swimming for many years (once a week of so). And in my experience, I think he was right (at least partially).
So I wonder, what swimmers do in the gym. I search for some routines but first links contain stuff like from $5 DVD about bodybuilding in 90s. Including biceps curls, seated exercises, exercises with low weight for high repetitions, "core" exercises on swiss ball and lines like "it is great for trices!".
I am not surprised, it is hard to find out what the professionals actually do also in other sports - short distance running and combat sports are prime example.
Where I can find out, what the good swimmers actually do or should do in gym?