Effects of Casein Timing on Body Composition and Performance

November 20, 2017 updated by: Jordan Joy, Texas Woman's University

Effects of Evening Casein Protein Consumption on Body Composition and Performance

This study will investigate the effects of night time versus day time casein supplementation on body composition and athletic performance. Participants will consume the protein supplements daily while participating in a supervised, periodized resistance training program.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

In a randomized, double-blind, placebo-, exercise- and diet-controlled design, 60 subjects will participate in a 10-week study to determine the influence of selective protein timing on body composition, metabolic, and performance adaptations to resistance training. Diets will be individually standardized using the Cunningham equation adjusted for activity level to determine total maintenance calories. Carbohydrates, fats, and proteins will represent 50, 25, and 25 percent of the determined total calories. Diet counseling will occur weekly until stabilized and biweekly thereafter to ensure compliance with food and fluid intake. Protein will be distributed throughout the day as >0.30g/kg bw/meal for breakfast, lunch, and dinner. Resistance training sessions will be supervised by research staff and occur 4 times per week and begin between 7 am and 5pm. Exercises will consist of single- and multi-joint exercises for all major muscle groups (legs, chest, back, shoulders, core, and arms), be performed for 3-5 sets of 1-20 repetitions with 1-5 minutes rest between sets, and each muscle group will undergo 72-96 hours rest between training sessions within the periodized program. Protein supplements. In the treatment group, the casein supplement (40g calcium caseinate dissolved in water) will be consumed as the last meal (>2h following previous meal) before bed and the placebo (40g maltodextrin dissolved in water) either before resistance training, if training after 10am, or after resistance training, if before 10am. The control group will alternate consumption times of the casein supplement and placebo. The supplement (treatment group) or placebo (control group) will not be consumed within 3 hours of beginning or ending resistance training, nor will it be consumed within 3 hours of the first meal following waking. All groups will be provided with 0.30g/kg bw whey protein isolate immediately following training to facilitate recovery. Supplements will be consumed at a similar time of day on non-training days.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
33

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Texas
      • Denton, Texas, United States, 76204
        • Texas Woman's University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 30 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • healthy
  • trained (exercises 2-5 days per week for previous 1-3 years)
  • maintains regular sleep patterns (7-9 hours per night weekly average)

Exclusion Criteria:

  • use of ergogenic aids or medicines known to influence outcomes
  • data will be excluded if a participant is <80% compliant with diet and training interventions
  • consumes greater than or equal to 12 alcoholic beverages per week
  • tobacco use
  • dairy allergy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Day
Group receives casein protein during the day (greater than 6 hours before bed).
Dietary supplement: Protein
40g calcium caseinate
Experimental: Night
Group receives casein protein immediately before going to bed.
Dietary supplement: Protein
40g calcium caseinate

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Changes in lean soft tissue
Time Frame: pre to post over 10 weeks
estimation of muscle mass by DXA
pre to post over 10 weeks
Changes in squat 1 repetition maximum
Time Frame: pre to post over 10 weeks
measure of lower body strength
pre to post over 10 weeks
Changes in bench press 1 repetition maximum
Time Frame: pre to post over 10 weeks
measure of upper body strength
pre to post over 10 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
changes in fat mass
Time Frame: pre to post over 10 weeks
estimation of body fat by DXA
pre to post over 10 weeks
changes in percent body fat
Time Frame: pre to post over 10 weeks
estimation of body fat by DXA
pre to post over 10 weeks
changes in quadriceps cross-sectional area
Time Frame: pre to post over 10 weeks
measure of muscle hypertrophy
pre to post over 10 weeks
changes in quadriceps muscle thickness
Time Frame: pre to post over 10 weeks
measure of muscle size
pre to post over 10 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Texas Woman's University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 18, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 18, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 16, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 20, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 24, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 24, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 20, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2017

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 18896

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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