Announcing the Final Examination of Ran Wang for the degree of Doctor of Philosophy
Date of defense: April 5th
Time and room: 11:00 AM, ED 306
Dissertation Title: The Effect of Repeated Sprint Training in Hypoxia and Beta-Alanine Supplementation On Exercise Performance
The goal of this research was to examine the effect of repeated sprint training in hypoxia and beta-alanine supplementation on aerobic, anaerobic, and repeated sprint performance in recreationally trained men. The literature review found that repeated sprint training in hypoxia primarily enhances metabolic reactions involved with pH regulation and glycolysis, while the most likely mechanism of action of beta-alanine supplementation is to increase intracellular buffering capacity. Therefore, the combination of these two interventions may provide independent but additive ergogenic effects on muscle buffering capacity through a variety of potential mechanisms and has yet to be evaluated with regard to exercise performance.
In this investigation, participants were randomly assigned to one of the following groups: hypoxia + beta-alanine, hypoxia + placebo, normoxia + beta-alanine and normoxia + placebo. All participants completed a total of 8 training sessions (each consisting of 3 sets of 5 × 10-s sprints at a resistance of 7.5% of body mass, with 20-s rest intervals between sprints) over 4 weeks on a cycle ergometer either in hypoxia (Oxygen fraction: FiO2 = 14.2%) or normoxia (FiO2 = 20.9%). Participants were instructed to consume a daily dosage of 6.4g (two 800 mg tablets ingested 4 times per day at 3-4 hour intervals) of either beta-alanine or placebo. Changes in performance in a graded exercise test, repeated sprint test, and 3-min all-out test were examined before and following 4 weeks of intervention period.
The results of this study demonstrated that repeated sprint training in hypoxia and beta-alanine benefit performance from different perspectives. Repeated sprint training in hypoxia improved aerobic performance, exercise tolerance, cardiovascular recovery and exercise capacity, while beta-alanine supplementation maintained anaerobic working capacity in recreationally-trained men.
Committee in charge:
Dr. Jay Hoffman
Dr. David Fukuda
Dr. Jeffrey Stout
Dr. Jie Kang
Outline of Studies
Major: Education PhD Exercise Physiology Track
Educational Career
BEd, 2006, Beijing Sport University
MEd, 2010, Beijing Sport University
Approved by Dr. Jay Hoffman, Committee Chair on Mar 27th, 2017
The public is welcome to attend.
Read More