Originally Posted by
TromboneAl
There's an anecdote in the book Body by Science that illustrates that our concept of "cardiovascular fitness" may be flawed. That is, it suggests that running may make you a better runner (or spinning may make you a better spinner), but it doesn't improve your CV fitness in a general sense. ...
Something just doesn't sound right about that...
True, when you are cycling you are building the muscles you use when cycling and, when running you build the muscles you use while running -- and so on...
But all forms of aerobic exercise also strengthen the muscles of cardio - vascular - pulmonary systems...
Plus aerobic exercise also stimulates various chemicals such as BDNF, IGF and so on that have additional physiologic benefits.
... But there is also more to being "fit' than cardio-vascular-pulmonary fitness...
...... If ya ain't strong enough to lift the piece of pie to your mouth, what good is it I ask ya?