New research into weight lifting has revealed two insights: that the practice is able to strengthen the connections between nerves and muscles, and that this strengthening can still happen in the later years of our lives.
before the age of 40, caused in part by a reduction in muscle fibers that happens as motor neurons – cells in the brain and spinal cord that tell our bodies to move – break down.
"Previously, researchers have been unable to prove that weight training can strengthen the connection between the motor neurons and the muscles. Our study is the first to present findings suggesting that this is indeed the case,"This is partly because of the challenges in sampling enough tissue at locations where muscle and nerve cells connect so meaningful measurements can be made.
Weight training sessions happened three times a week, and after two months , the differences in muscle size and fitness could be seen. Researchers collected muscle biopsies and found detectable changes in the biomarkers.
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