Abstract
Purpose: The purpose of this study was to investigate the effects of Antroquinonol (A) supplementation on physiological responses after exhaustive tennis groundstrokes. Methods: Twelve university tennis club male health subjects participated in the study. The age, height, body mass of the subjects were 22.3±1.9 yrs, 175±7.3 cm, 71.7 ±10.3 kg respectively. Double blind cross over design was performed. All subjects had accepted all four kinds of treatments: (1) placebo without exercise, PR. (2) placebo with exercise, PE. (3) A supplementation without exercise, DR. (4) A supplementation with exercise, DE. The amount of Antroquinonol supplementation was 0.05mg per kg of body weight every day for one week. Subjects’ maximum oxygen uptake was determined by portable metabolic system (K4B2) hitting the ball frequency of 8, 10, 12, 14, 16, 18, 20 balls/min on the tennis court. All subjects performed 80% VO2max intensity of continuous groundstroke against tennis ball machine until exhaustion. The stroke performance of stroke accuracy and ball speed was measured. Blood samples were intravenously collected from the subjects before and after (immediately, 10, 20, 30 min, 1, 2, 24 hr, respectively) the exhaustive tennis groundstrokes. The stroke accuracy and ball speed was no significantly different on PE and DE group. The activities of LDH, HR and blood lactic acid, glucose, ammonia concentration significantly increased in PE group compared with PR group . Moreover, The concentration of lactic acid in DE group was significant decreased compared with PE group. The results indicate that Antroquinonol supplementation could be beneficial for anti-fatigue.