Muscular Hypertrophy
Conditions
Keywords
Hypertrophy, body composition, milk, resistance training
Brief summary
Post-resistance training high protein milk supplementation may be a viable method to elicit muscular gains. The investigators hypothesis is that high protein milk supplementation would improve skeletal regulatory markers, hormonal responses and body composition in resistance-trained men.
Detailed description
The aim of this investigation was to compare the effects of high protein milk supplementation (daily and after training sessions) during 6 weeks of resistance training on skeletal muscle regulatory markers, hormonal responses and body composition in resistance-trained men. Specific aims of the study are to: To investigate the extent to which high protein milk supplementation will improve anabolic factors, lean body mass, fat mass and decrease catabolic markers after 6 weeks of resistance training in resistance-trained men.
Interventions
DIETARY_SUPPLEMENThigh protein milk
This intervention consisted of high protein milk consumption concomitant with 6 weeks of resistance training. Subject ingested consumed 1 x 250 mL immediately after resistance training and 1 x 250 mL half an hour before bedtime.
DIETARY_SUPPLEMENTPlacebo
This intervention consisted of the consumption of a maltodextrin drink with a 9% solution with a vanilla flavor concomitant with 6 weeks of resistance training. Subject ingested consumed 1 x 250 mL immediately after resistance training and 1 x 250 mL half an hour before bedtime.
Sponsors
University of Tehran
Marymount University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* Aged 18-35 years of age * Healthy Males * Experienced at resistance training (at least 1 year of prior structured resistance training 3 x week).
Exclusion criteria
* smoking * chronic alcohol consumption * having any medical issues and diseases * lactose intolerance * the consumption of any dietary supplements (including vitamins or protein supplements) or medications for 6 months prior to participation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Circulatory Myokines levels | 6 weeks | Fasting blood samples were collected from the antecubital vein using standard procedures and then analyzed to establish concentration of myostatin and follistatin. |
| Circulatory hormone levels | 6 weeks | Fasting blood samples were collected from the antecubital vein using standard procedures and then analyzed to establish concentrations of testosterone, IGF-1, growth hormone, insulin and cortisol |
| Body composition | 6 weeks | Lean body mass and body fatness will be evaluated using bioelectrical impedance |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Muscular Strength | 6 weeks | Using a 1 repetition maximum test (defined as the maximal weight an individual can lift for only one repetition) for the bench press and back squat exercises |
| Muscular Power | 6 weeks | Using the Wingate test |
Countries
United States
Outcome results
None listed