Effects of Dietary Protein on Musculoskeletal Health During Calorie Deficiency

August 10, 2017 updated by: United States Army Research Institute of Environmental Medicine

The Musculoskeletal Response to Energy Deficit: Defining Optimal Protein Intake

Military personnel face many physiological challenges, including sustained physical activity and prolonged periods of negative energy balance. Chronic energy deficiency often results in a loss of skeletal muscle mass and can reduce overall bone health. Recent evidence suggests that dietary interventions that provide protein in excess of the current national dietary recommendation may confer protection against the negative effects of energy deficiency on the musculoskeletal system. The primary objective of this randomized, controlled study is to assess the effects dietary protein intake spanning the current acceptable macronutrient distribution range on musculoskeletal health following prolonged energy deficiency. Findings from this investigation will improve current understanding of dietary conditions necessary to reduce the damaging effects of caloric deficiency on musculoskeletal health in warfighters. Furthermore, given the rise in obesity in military populations, findings may aid in the development of nutritional weight management strategies that promote healthy weight loss without compromising musculoskeletal health.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

42

Phase

  • 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
    • North Dakota
      • Grand Forks, North Dakota, United States, 58202
        • USDA Grand Forks Human Nutrition Research Center

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

Ages Eligible for Study

18 years to 42 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Weight stable with body mass index 22-29 kg/m2
  • Physically active
  • Refrain from NSAIDS and other aspirin containing medications
  • Refrain from alcohol and nicotine

Exclusion Criteria:

  • Metabolic or cardiovascular abnormalities, gastrointestinal disorders
  • Disease or medication that affects metabolism and/or exercise
  • Allergies or intolerance to foods, vegetarian practices, or medications to be used in the study
  • Anemia and Sickle Cell Anemia/Trait; abnormal PT/PTT test or problems with blood clotting
  • Present condition of alcoholism, use of nutritional/sports supplements, anabolic steroids, or other substance abuse issues
  • Musculoskeletal injuries that compromise the ability to exercise
  • Blood donation within 8 weeks of beginning the study
  • Pregnancy and women not on contraceptives

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: Factorial Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Protein level 1
Other: Dietary Protein Intake
Protein intakes within the current recommendation
Experimental: Protein level 2
Other: Dietary Protein Intake
Protein intakes within the current recommendation
Experimental: Protein level 3
Other: Dietary Protein Intake
Protein intakes within the current recommendation

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change from weight maintenance in muscle metabolism after energy restriction
Time Frame: Measured after a 3 week energy deficit
Measured after a 3 week energy deficit

Secondary Outcome Measures

Outcome Measure
Time Frame
Change from weight maintenance in bone metabolism after energy restriction
Time Frame: Measured after a 3 week energy deficit
Measured after a 3 week energy deficit

Collaborators and Investigators

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

Sponsor

United States Army Research Institute of Environmental Medicine

Collaborators

USDA Grand Forks Human Nutrition Research Center
Eastern Michigan University

Investigators

  • Principal Investigator: Stefan M Pasiakos, PhD, United States Army Research Institute of Environmental Medicine

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

September 1, 2010

Primary Completion (Actual)

November 1, 2011

Study Completion (Actual)

November 1, 2011

Study Registration Dates

First Submitted

January 19, 2011

First Submitted That Met QC Criteria

February 7, 2011

First Posted (Estimate)

February 9, 2011

Study Record Updates

Last Update Posted (Actual)

August 14, 2017

Last Update Submitted That Met QC Criteria

August 10, 2017

Last Verified

August 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H10-03
  • 503 (Other Identifier: USDA GFHNRC)

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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