Plant-based Dietary Protein and Resistance-training Adaptations

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

38 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-03-31

Study Completion Date

2018-10-19

Brief Summary

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Dietary protein consumption maximizes the anabolic response during resistance training (RT) by triggering muscle protein synthesis and providing the indispensable amino acids for a net positive protein balance. Leucine is considered the key amino acid in this process, suggesting that differences in protein quality may influence RT-induced gains in muscle mass and strength. In general, plant-based protein sources have lower leucine concentrations than animal-based protein sources and human skeletal muscle. In this respect, despite acute evidence on lower anabolic properties of plant- vs. animal-based protein, the effects of an exclusive plant-based dietary protein diet on RT-induced adaptations are currently unknown.

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Detailed Description

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Conditions

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Healthy

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Caregivers Investigators Outcome Assessors

Study Groups

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Omnivorous

Interventions: Daily protein intake was adjusted to 1.6g/kg/day via supplementation (whey) + 12 weeks of resistance training

Group Type ACTIVE_COMPARATOR

whey protein

Intervention Type DIETARY_SUPPLEMENT

supplementation individually adjusted to 1.6g/kg/day

Vegan

Interventions: Daily protein intake was adjusted to 1.6g/kg/day via supplementation (soy) + 12 weeks of resistance training

Group Type EXPERIMENTAL

soy protein

Intervention Type DIETARY_SUPPLEMENT

supplementation individually adjusted to 1.6g/kg/day

Interventions

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whey protein

supplementation individually adjusted to 1.6g/kg/day

Intervention Type DIETARY_SUPPLEMENT

soy protein

supplementation individually adjusted to 1.6g/kg/day

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Healthy young men
* Vegans ≥ 1 y or omnivorous subjects
* Physically active but no resistance-trained subjects
* Without any chronic injury that impairs resistance training performance
* Protein intake \> 0.8 g/protein/kg body weight

Exclusion Criteria

* Use of creatine or beta-alanine supplements for the last 3 months
* Use of proteins and/or amino acids supplements for the last 1 month
* Engagement in specific dietary restrictions
* Previous use of anabolic steroids
* Engagement in any training program

Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes