| Effect | Both |
| Values | Figure 3 |
| Trial Design | Randomized trial |
| Trial Length | 2-4 Weeks |
| Number of Subjects | 55 |
| Sex | Both Genders |
| Age Range | 18-29, 30-44, 45-64, 65+ |
In a randomized, double-blind, placebo-controlled trial, 55 marathon runners were allocated to take 300 mg of Rhodiola Rosea extract (11.3 mg rosavin, 4.3 mg salidroside) twice daily for 30 days prior to the marathon and 7 days after.Funding issues for this study:
Muscle function as measured by the vertical jump test, didn't differ significantly between groups, and neither did the symptoms of DOMS. There was a nonsignificantly greater increase in creatine kinase in the Rhodiola group compared with placebo after the marathon, and there were no statistically significant differences between groups in neutrophils, lymphocytes, monocytes, AST, or ALT, as well as any cytokines or measures of inflammation, though modestly higher inflammation was found in the placebo group.
"This study was funded through a grant provided by PL Thomas & Co., Inc. (Morristown New Jersey)."
