Traducción
Parte 2 (lo he dividido en 3) del artículo "The Endurance and Hypertrophy Paradox":
The problem with utilizing high repetition, short-rest-period training extends far beyond a decrease in maximal strength. Simoneau et al performed a study that clearly showed the detrimental effects that continuous endurance training can have on your maximum hypertrophy efforts. They had 24 subjects undergo an endurance program over a period of 15 weeks. At the end of the study, muscle biopsies revealed a significant gain in the percentage of type I endurance muscle fiber qualities with a subsequent decrease in type IIB fiber qualities (1).
This is bad news for those who are interested in maximal strength and size as the fewer the type IIB fiber qualities, the less potential for greater strength and size. In other words, if you stray from training the type IIB fibers/motor units because you seek a more "conditioned" physique, you'll have a hell of a tough time gaining strength and size when you return to maximal strength training.
As if that isn?t enough bad news for you, I?ve got more. Studies with endurance-training protocols demonstrated a decrease in size of aerobically-trained myofibrils. In other words, continuous aerobic training will decrease the size of the trained muscle fibers! The body forces the fibers to become smaller and thinner to achieve better perfusion (nutrient transfer) within the fibers (2). That's good for endurance, but very bad for hypertrophy.
Lemons into Lemonade
As with anything in life, there's something valuable to be learned from all scientific discoveries. Ingjer looked at other features of muscle that were endurance-trained. He concluded that endurance training increased the number of capillaries around all muscle fiber types (3). This was very important data since an increase in capillary density will increase nutrient transfer and recovery rates.
I broke new hypertrophy-inducing ground when I introduced the training world to my 100 Reps to Bigger Muscles protocol that utilizes high-repetition endurance training on non-strength training days to facilitate an increase in capillary density without a significant conversion of type IIB to type I qualities. My personal observations with clients led me to suspect that an adequately designed high-rep, supplemental workout could have beneficial effects. But it wasn?t until hundreds, if not thousands, of Testosterone readers absolutely confirmed my hypothesis with unequivocal, real-world data by trying out the program.
For some people, though, too much just isn?t enough. I've received numerous inquiries about following my 100 Reps to Bigger Muscles parameters for all muscle groups, all the time. Bad idea. Some type of maximal or low-repetition hypertrophy parameters should always be included in your training cycle. If not, you'll quickly turn into a Woody Allen look-a-like whose only shot at impressing chicks is by curling an 8 lb. Dumbbell 100 times.
The problem with utilizing high repetition, short-rest-period training extends far beyond a decrease in maximal strength. Simoneau et al performed a study that clearly showed the detrimental effects that continuous endurance training can have on your maximum hypertrophy efforts. They had 24 subjects undergo an endurance program over a period of 15 weeks. At the end of the study, muscle biopsies revealed a significant gain in the percentage of type I endurance muscle fiber qualities with a subsequent decrease in type IIB fiber qualities (1).
This is bad news for those who are interested in maximal strength and size as the fewer the type IIB fiber qualities, the less potential for greater strength and size. In other words, if you stray from training the type IIB fibers/motor units because you seek a more "conditioned" physique, you'll have a hell of a tough time gaining strength and size when you return to maximal strength training.
As if that isn?t enough bad news for you, I?ve got more. Studies with endurance-training protocols demonstrated a decrease in size of aerobically-trained myofibrils. In other words, continuous aerobic training will decrease the size of the trained muscle fibers! The body forces the fibers to become smaller and thinner to achieve better perfusion (nutrient transfer) within the fibers (2). That's good for endurance, but very bad for hypertrophy.
Lemons into Lemonade
As with anything in life, there's something valuable to be learned from all scientific discoveries. Ingjer looked at other features of muscle that were endurance-trained. He concluded that endurance training increased the number of capillaries around all muscle fiber types (3). This was very important data since an increase in capillary density will increase nutrient transfer and recovery rates.
I broke new hypertrophy-inducing ground when I introduced the training world to my 100 Reps to Bigger Muscles protocol that utilizes high-repetition endurance training on non-strength training days to facilitate an increase in capillary density without a significant conversion of type IIB to type I qualities. My personal observations with clients led me to suspect that an adequately designed high-rep, supplemental workout could have beneficial effects. But it wasn?t until hundreds, if not thousands, of Testosterone readers absolutely confirmed my hypothesis with unequivocal, real-world data by trying out the program.
For some people, though, too much just isn?t enough. I've received numerous inquiries about following my 100 Reps to Bigger Muscles parameters for all muscle groups, all the time. Bad idea. Some type of maximal or low-repetition hypertrophy parameters should always be included in your training cycle. If not, you'll quickly turn into a Woody Allen look-a-like whose only shot at impressing chicks is by curling an 8 lb. Dumbbell 100 times.
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