title: Effect of Eleutherococcus senticosus on submaximal and maximal exercise performance.
abstract: We investigated the effect of Eleutherococcus senticosus Maxim L (ESML) on performance during submaximal and maximal aerobic exercise. Twenty highly trained distance runners randomly assigned in matched pairs to either an experimental (ESML) or placebo (PL) group, participated in an 8-wk double-blind study during which they completed five trails of a 10-min treadmill run at their 10 km (10K) race pace and a maximal treadmill test (T(max)). Following a baseline trail, ESML and PL consumed, respectively, 3.4 ml of ESML extract or placebo daily for 6 wk. Subjects were tested every 2 wk during supplementation and 2 wk following withdrawal. Heart rate (HR), oxygen consumption (VO2), expired minute volume (VE), ventilatory equivalent for oxygen (VE/VO2), respiratory exchange ratio (RER), and rating of perceived exertion (RPE) were measured during the 10K and T(max) tests. Resting, post-10K and post-T(max) blood samples were analyzed for serum lactate. No significant differences were observed between ESML and PL for: HR, VO2, VE, VE/VO2, RER, or RPE; T(max) time to exhaustion; or serum lactate. The data do not support an ergogenic effect of ESML supplementation on selected metabolic, performance, or psychologic parameters associated with submaximal and maximal aerobic exercise tasks.
authors.affiliation: Department of Health, Physical Education, and Recreation, Old Dominion University, Norfolk, VA 23529-0196, USA.
authors.forename: E A
authors.initials: EA
authors.lastname: Dowling
authors.forename: D R
authors.initials: DR
authors.lastname: Redondo
authors.forename: J D
authors.initials: JD
authors.lastname: Branch
authors.forename: S
authors.initials: S
authors.lastname: Jones
authors.forename: G
authors.initials: G
authors.lastname: McNabb
authors.forename: M H
authors.initials: MH
authors.lastname: Williams
mesh_terms: D000328:Adult; D004311:Double-Blind Method; D015444:Exercise / Q000502:physiology*; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D005894:Panax; D010809:Physical Fitness / Q000502:physiology; D010946:Plants, Medicinal; D012119:Respiration; D012420:Running / Q000502:physiology