In short cardio long endurance training is catabolic it eats up muscle and also nswings those precius type 2 fibers to type one. thats veryu short. but you can do some hell we all need to be some what conditioned.
Try doing a search and reading the old Cardio Roundtable here on this site.
Type II fibers cannot switch to type I and Type I cannot switch to type II. Type IIb which is the most powerful can turn to Type IIa if exposed to endurance exercise. Type IIa is has more aerobic properties…
Technically correct and technically not correct. Your muscles are comprised of both types. The percentage of each type can change depending on the type of workout you do. Type II are more dense than type I. So if you go catabolic and atrophy the type II, you will increase the percentage of type I and your muscle mass will decrease.[/quote]
Yes and well this stuff as modt thing is still undamn clear. its largely theory, speculation a study showing one thing another showing the opposite. What can be said is that LOTS of long duration cardio is not a friend to being either HUGE or strong.
But sure do SOME. if you want hell go for a long walk. its great for the old ticker, easy on the joints and will more likely aid recovery and growth, burn fat , etc.