Muscle Growth Following a Resistance Training Program in Men and Women Consuming Protein Supplements

Point Loma Nazarene University

Status: Completed

Conditions: Skeletal Muscle Growth

Treatments: Dietary Supplement: Whey protein supplement; Dietary Supplement: Soy protein supplement

Study type: Interventional

Funder types: Other

Identifiers

NCT03868631

01435225

Details and patient eligibility

About

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.

Enrollment: 61 patients

Sex: All

Ages: 18 to 35 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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61 participants in 2 patient groups

Soy protein group

Active Comparator group

Treatment:

Dietary Supplement: Soy protein supplement

Whey protein group

Active Comparator group

Treatment:

Dietary Supplement: Whey protein supplement