The purpose of this study is to examine the effect of varying nitrate doses of beetroot juice supplementation on dynamic, multijoint resistance exercise performance in active, trained individuals. Performance will be assessed based on parameters including neuromuscular efficiency, anaerobic performance capability, oxygen consumption, plasma nitrate/nitrite levels, specific muscle tissue biomarkers including lactate, and anthropometric measurements of select muscle groups.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
13
Commercially available concentrated beetroot juice supplement intended for athletes.
Fruit juice cordial containing negligible nitrate
Richardson Centre for Functional Foods and Nutraceuticals
Winnipeg, Manitoba, Canada
Muscle activation and fiber recruitment
Muscle activation/fiber recruitment to be measured in millivolts (mV) using electromyography (EMG) sensor during maximum voluntary contractions (MVC) and compared between study arms.
Time frame: 5 weeks
Plasma nitrate/nitrite levels
Plasma nitrate and nitrite levels will be measured at baseline and after 7 days of supplementation and compared between study arms.
Time frame: 5 weeks
Number of repetitions performed
Total number of repetitions in each session and number of repetitions performed at each respective % of 1 repetition maximum during each session will be recorded and compared between study arms.
Time frame: 5 weeks
Oxygen consumption
Total oxygen consumption during testing sessions will be recorded and compared between study arms.
Time frame: 5 weeks
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