Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
Schisandra enhances the increase of muscle strength induced by exercise
A supplement containing an extract of the berries of Schisandra chinensis augments the increase of muscle strength by low-intensity exercise. This is apparent from a human study that Korean researchers published in the American Journal of Clinical Nutrition.
Half of the subjects took placebo capsules twice a day, the other half received capsules containing an extract of Schisandra chinensis. The subjects took 2 capsules with 250 milligrams of extract with breakfast, and another 2 capsules with 250 milligrams with dinner. In total, the subjects in the experimental group received one gram of extract per day.
This gram of extract contained 1.6 milligrams of schisandrin.
However, the torque [say: the strength] that the test subjects could develop during a leg extension did increase. This made sense, because after all, the subjects had used their leg muscles during the experiment. However, the increase in torque was significantly greater in the schisandra group.
Click on the table above for a larger version.
The Korean study doesn't tell us much about how Schisandra chinensis makes muscles stronger. The researchers found no effect on inflammatory factors or markers of oxidation. There was, however, a trend that the glucose level in subjects who received schisandra was slightly lower.
Click on the table below for a larger version.
Perhaps Schisandra chinsensis increases glucose uptake by active muscle cells?
"Further clinical studies are needed to determine the effective dose of Schisandra chinensis extract supplementation for muscle strength and mass and confirm the interaction between Schisandra chinensis extract and exercise."