Dietary Protein Requirement of Elderly Men and Women

NCT ID: NCT00812500

Last Updated: 2013-09-24

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

48 participants

Study Classification

INTERVENTIONAL

Study Start Date

2002-05-31

Study Completion Date

2006-01-31

Brief Summary

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The purpose of this study was to assess the effect of age on the estimated average requirement and adequate allowance for dietary protein.

Detailed Description

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Conditions

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Age

Keywords

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assess the effect of age on the EAR and RDA for protein

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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1

Young men, age 21-46 years.

Group Type EXPERIMENTAL

Lower Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.

Medium Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.

Higher Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.

2

Old Men, age 63-81 years.

Group Type EXPERIMENTAL

Lower Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.

Medium Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.

Higher Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.

3

Young women, age 21-46 years.

Group Type EXPERIMENTAL

Lower Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.

Medium Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.

Higher Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.

4

Old women, age 63-81 years.

Group Type EXPERIMENTAL

Lower Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.

Medium Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.

Higher Protein

Intervention Type OTHER

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.

Interventions

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Lower Protein

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a lower protein diet.

Intervention Type OTHER

Medium Protein

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a medium protein diet.

Intervention Type OTHER

Higher Protein

Each subject completed an 18-day periods (trials) of strict dietary control of consuming a higher protein diet.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age: 21-46 years, 63-81 years old
* Not diagnosed with diabetes or metabolic syndrome
* Clinically normal blood laboratory values

Exclusion Criteria

* Age: 21 years of younger, 47-62 years old, and 82 years and older
* BMI: 20-29 kg/m
* Weight stable: \<2kg change within the last 3 months
* Physical Activity: constant habitual pattern, no deviation \>1x week of 30/minute sessions within the last 3 months

Clinically abnormal values:

* Blood
* Urine

Also, exclude any:

* Using meds that would influence appetite
* Using any anti-inflammatory steroid medications
* Has a joint replacement
* A medical condition that might place them at risk for participating in the study or interfere with successful completion of the study
Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Purdue University

OTHER

Sponsor Role lead

Responsible Party

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Wayne Campbell

Prof. Foods and Nutrition

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Purdue University

West Lafayette, Indiana, United States

Site Status

Countries

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United States

Other Identifiers

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00-226

Identifier Type: -

Identifier Source: org_study_id