N/A
N=61
Muscle Growth Following a Resistance Training Program in Men and Women Consuming Protein Supplements
Skeletal Muscle Growth
Bottom Line
View on ClinicalTrials.gov: NCT03868631 ↗Enrolled (actual)
61
Serious AEs
0.0%
Results posted
Feb 2020
Primary outcome: Primary: Lean Body Mass Change — 1.5; 1.3 kilogram — p=<0.05
Study Design & Population
- Study type
- Interventional
- Phase
- N/A
- Interventions
- Whey protein supplement (Dietary_supplement); Soy protein supplement (Dietary_supplement)
- Age
- Adult · 18+ yrs
- Sex
- All
- Sponsor
- Point Loma Nazarene University
- Primary completion
- Apr 2017
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Lean Body Mass Change |
1.5; 1.3 | <0.05 sig |
| PRIMARY Muscle Tissue Thickness Change |
0.12; 0.05 | — |
| PRIMARY Leg Girth Changes |
-0.1865; -0.0084 | — |
| SECONDARY Change in Peak Torque When Doing Leg Extensions |
12.1; 18.0 | — |
Summary
Soy and whey protein have different concentrations of leucine, an amino acid known to be a particularly potent simulator of muscle protein synthesis. The purpose of this study is to determine whether matching soy and whey protein supplements for leucine content instead of by total protein content would contribute to differences in strength increases and muscle growth in response to 12 wk of resistance training.
Eligibility Criteria
Inclusion Criteria
- non-smoking
- body mass index (BMI) 18.5-24.9
- recreationally active
Exclusion Criteria
- participated in structured weight training during the previous 12 month
- vegetarian or vegan
- presence of chronic disease
- pregnant, postpartum up to six months, lactating, or intention to become pregnant
- allergy to whey or soy
- changes in body weight more than 10 pounds in the past three months
Data sourced from ClinicalTrials.gov (NCT03868631). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.