Comparison of Protein Ingestion Timing on Body Composition, Physical Performance, and Biochemical Markers in Resistance-trained Males
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Marymount University
- Enrollment
- 40
- Locations
- 1
- Primary Endpoint
- Body Composition
Study Overview
Brief Summary
Protein ingestion timing is an important component for muscle accretion. The investigators hypothesized that protein ingestion timing could affect muscular adaptations and performance in resistance-trained men.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Basic Science
- Masking
- Triple (Participant, Investigator, Outcomes Assessor)
Eligibility Criteria
- Ages
- 18 Years to 35 Years (Adult)
- Sex
- Male
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •performing resistance training at least three times a week for 1 year prior to the start of the study
- •not taking any steroids or any illegal agents known to increase muscle size for at least 1 year prior to the start of the study
- •no known medical issues
- •sleeping for at least seven to eight hours during the 24-hour day
Exclusion Criteria
- •non-willingness to continue protein ingestion or exercise protocols
- •participation in exercise other than the prescribed resistance training program
- •consumption of dietary supplement (other than the protein intervention) during the study period
- •Missing more than one resistance training session or protein ingestion throughout the study period
Arms & Interventions
Protein ingestion immediately prior to and immediately after resistance training
This arm involved protein ingestion immediately prior to and immediately after resistance training for 12 weeks. Participants will consume 40 g of isolate whey protein at their recommended timing.
Intervention: isolate whey protein prior to and immediately after resistance training (Dietary Supplement)
Protein ingestion 3 hours prior to and 3 hours after resistance training
This arm involved protein ingestion 3 hours prior to and 3 hours after resistance training for 12 weeks. Participants will consume 40 g of isolate whey protein at their recommended timing.
Intervention: isolate whey protein 3 hours prior to and 3 hours after resistance training (Dietary Supplement)
Outcomes
Primary Outcomes
Body Composition
Time Frame: 12 weeks
Total Lean mass, fat mass, and estimated VAT (g) will be assessed using whole-body DXA
Secondary Outcomes
- Muscular Strength(12 weeks)
- Pull-ups(12 weeks)
- Muscular Endurance(12 weeks)
- Jump testing(12 weeks)
- Creatinine and Urea Nitrogen(12 weeks)
- Cholesterol Levels(12 weeks)
- Liver enzymes (ALT, AST, and GGT)(12 weeks)
Investigators
Alexei Wong
Associate Professor
Marymount University