The purpose is to compare the effects of bolus ingestion (5 grams) vs. intermittent ingestion (2 x 2.5 grams) of creatine supplementation vs. placebo for 21 days on measures of body composition (lean tissue mass-indicator of muscle mass, total body water) and muscle performance (i.e., power, strength, endurance).
Creatine is a naturally occurring compound produced in the liver and brain. Creatine can also be found in food products such as red meat and seafood or through commercially available manufactured creatine products (i.e. creatine supplementation). Evidence-based research shows that creatine supplementation improves measures of body composition and muscle performance. However, the optimal creatine supplementation protocol to achieve these benefits is unknown.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
42
University of Regina
Regina, Saskatchewan, Canada
RECRUITINGWhole-body lean mass (kg)
Bioelectrical impedance analysis
Time frame: baseline, day 21
Strength
1-repetition maximum leg press and chest press (kg)
Time frame: baseline, day 21
Endurance
Repetitions to fatigue for leg press and chest press (total number)
Time frame: baseline, day 21
Hydration
Total body water (kg) using bioelectrical impedance analysis
Time frame: baseline, day 21
Power
Vertical Jump (cm)
Time frame: baseline, day 21
Power
Medicine Ball Throw (feet)
Time frame: baseline, day 21
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