Being into sports, it always interests me how exercise shapes our physiology and health. Are cross-country skiers the fittest with the biggest lungs and hearts because they use their whole bodies. Then why not swimmers?
There was a study recently of swimmer's hearts versus runners hearts and the conclusion from the small study is runner hearts have fractionally higher capacity. One guess as to why is runner hearts have to fight gravity.
What I'd like to know is if it's true runners suffer more injuries to joints or whether my sports doc and physical therapists are right and swimmers suffer more injuries because shoulders are fragile.