Stem cells aid muscle repair and strengthening after resistance exercise

Photo by L. Brian Stauffer University of Illinois kinesiology and community health professor Marni Boppart studies the mechanisms that enable muscles to recover and grow stronger after exercise.

University of Illinois kinesiology and community health professor Marni Boppart studies the mechanisms that enable muscles to recover and grow stronger after exercise. Photo by L. Brian Stauffer

A new study in mice reveals that mesenchymal (mezz-EN-chem-uhl) stem cells (MSCs) help rejuvenate skeletal muscle after resistance exercise.

By injecting MSCs into mouse leg muscles prior to several bouts of eccentric exercise (similar to the lengthening contractions performed during resistance training in humans that result in mild muscle damage), researchers were able to increase the rate of repair and enhance the growth and strength of those muscles in the exercising mice.

The findings, described in the journal Medicine and Science in Sports and Exercise, may one day lead to new interventions to combat age-related declines in muscle structure and function, said University of Illinois kinesiology and community health professor Marni Boppart, who led the research.

“We have an interest in understanding how muscle responds to exercise, and which cellular components contribute to the increase in repair and growth with exercise,” she said. “But the primary goal of our lab really is to have some understanding of how we can rejuvenate the aged muscle to prevent the physical disability that occurs with age, and to increase quality of life in general as well.”

The Latest on: Stem cells aid muscle repair and strengthening

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The Latest on: Stem cells aid muscle repair and strengthening

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