Effect of Rosa roxburghii Tratt Powder on Alleviating Oxidative Stress Injury of Skeletal Muscle in Overtrained Rat

Objective: To explore the effects of different concentrations of Rosa roxburghii Tratt powder on antioxidant stress injury of skeletal muscle in overtrained rats. Methods: The rats were divided into the control group (C group), exercise group (HT group), low concentration Rosa roxburghii Tratt powder exercise group (L-HT group) and high concentration Rosa roxburghii Tratt powder exercise group (H-HT group). HT, L-HT and H-HT groups underwent treadmill training with increasing load for 6 weeks, respectively. During the training, L-HT group and H-HT group were intragastrically administered with 20 and 50 mg/mL Rosa roxburghii Tratt powder solution at the dose of 20 mL·kg−1·d−1, respectively. Group C and HT were given the same dose of saline. The samples collected 24 hours after last training were used to measure serum creatine kinase (CK), interleukin -1β (IL-1β) and tumor necrosis factor-α (TNF-α). The activities of superoxide dismutase (SOD) and the contents of malondialdehyde (MDA) and glutathione (GSH) in s