Abstract
The present study was designed to investigate the effects of chronic ingestion of a proprietary beta-alanine supplement on body composition, indices of strength and power performance, and markers of cardiovascular endurance in physically active, college-aged males commissioning within the armed services. Subjects (n = 30) participated in four separate testing sessions, both pre and post assessment consuming either 6.0 g/day beta-alanine or Placebo supplementation for 6 weeks. Parameters evaluated included body fat percentage (BF%), fat free mass (FFM), vertical jump (VJ), 1 repetition maximum back squat (SQ) and bench press (BP), and a repetition maximum bench press (RMBP) at 75% of the attained maximum, maximal oxygen consumption (VO2peak), respiratory exchange ratio (RER), lactate threshold (LT), and peak lactate concentration. For all variables, no significant interactions existed across condition and time (p > .05). In addition, for all variables, no significant differences existed between conditions (p > .05). Beta-alanine did not show any benefit for improving body composition or physical performance parameters in this group of individuals.
Highlights
Increases in muscular strength have been shown to correlate with improved sprinting speed, jumping performance, and ease of performing activities of daily living [1, 2]
The primary purpose of this research study was to investigate the effects of chronic ingestion of a proprietary beta alanine supplement on body composition, indices of strength and power performance, and markers of cardiovascular endurance in physically active, college-aged males commissioning within the Air Force, Army, Navy and Marine Corps
The researcher hypothesized that chronic supplement ingestion would result in improved body composition, enhanced indices of strength and power performance, and improvements in markers of cardiovascular endurance, and a delay in the onset of blood lactate accumulation, the lactate threshold (LT)
Summary
Increases in muscular strength have been shown to correlate with improved sprinting speed, jumping performance, and ease of performing activities of daily living [1, 2]. Improvements in body composition have been shown to directly correlate with athletic performance across a multitude of activities [3, 4, 5]. In the extracellular environment red blood cells (RBCs) have two primary functions within the body: delivery of oxygen from the lungs to the metabolically active tissues, and uptake of carbon dioxide from these metabolically active tissues for unloading in the lungs [9]. These RBCs contain molecules of hemoglobin, responsible for carrying and transporting oxygen in the blood to the metabolically active tissues [9]. The heme group, which contains iron, is responsible for binding free oxygen for transport and delivery [9]
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