Just as some people gain fitness faster than
others, genes partially dictate how well pumping iron works for each person.
Researchers in Birmingham put 66 people through the same four-month lower-body
weightlifting program and then did muscle biopsies to assess the results. By
the end, about half increased their muscle fiber size by 25%; one-quarter saw
fibers swell in size by nearly half; and the remaining quarter saw no change at
all.
THE FIX:
LIFT DIFFERENTLY.
You can't necessarily expect to build strength
at the same rate as your gym buddy. But as with anything else in fitness,
mixing up your approach can change your results. If you don't see gains with
light weights and high repetitions, try heavy weights and fewer reps, or vice
versa—your response may vary based on traits like your mix of muscle fiber
types.
Prevention.com
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