Improving Dietary Protein Intake in Adults

Study Overview
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Brief Summary
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A pilot, single-arm investigation used coaching, nutrition education, and a per-meal protein prescription to assess impact on protein intake, muscle strength and function in older adults.

Detailed Description
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Objective: To evaluate the effects of nutrition education, diet coaching, and a protein prescription (PP) on protein intake, and associations with muscle strength and function. Design: Prospective pretest posttest single-arm study. Setting: Urban area, East coast of South Florida. Participants: Older adults. Intervention: 10-week telephone-based diet coaching, nutrition education and a per-meal PP. Measurements: Protein and energy intakes, weight, grip strength (GS), and 5-chair-rise (5CR), timed up and go (TUG), 3-meter walk (3mW) tests at baseline and 10 weeks.

Official Title
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Improving Dietary Protein Intake in Adults

Conditions
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Healthy

Intervention / Treatment
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* Behavioral: Nutritional coaching


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adults aged 55 years or older, Community-dwelling (living independently), Able to provide consent, Able to understand and respond to questions or instructions in English, Have a working telephone (for coaching sessions), Willingness to consume protein-containing animal products Willingness to make changes to the diet Exclusion Criteria: Self-reported information that they have been told by a medical doctor that they have kidney (renal) disease. Vegan dietary practices, Refusal to make changes to usual dietary protein intake, or a usual dietary protein intake that meets recommendations.

Ages Eligible for Study
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Minimum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Intervention Model: Single Group Assignment
Interventional Model Description: Repeated measures design
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Nutrition<br>All participants received diet coaching, nutrition education and a per-meal protein prescription. | Behavioral: Nutritional coaching<br>* Participants were provided with nutrition education and a per-meal protein prescription followed by 9 weeks of nutritional coaching.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Protein intake | Protein intake (g/kg/body weight) per day | Change from baseline to 10 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Grip strength | Grip strength measured using dynamometer | Change from baseline to 10 weeks | 
| Change in Timed Up and Go Test | The timed up and go test measures the time (in seconds) that it takes to stand up from a seated position in a chair, walk 3 meters away from the chair at a comfortable pace to a line on the floor, turn around, walk back, and sit back down in the chair. | Change from baseline to 10 weeks | 
| Change in 3 meter walk | The 3-meter walk test measures the time (in seconds) that it takes to stand up from a seated position in a chair and walk 3 meters away from the chair at a comfortable pace to a line on the floor | Change from baseline to 10 weeks | 
| Change in 5-Chair Rise Stand Test | The 5 chair rise stand test requires participants to stand up 5 times without hand assistance from a straight back chair without an armrest. The time required to complete the 5 chair rises is recorded. | Change from baseline to 10 weeks | 
| Change in Short Performance Physical Battery Score | The Short Physical Performance Battery (SPPB) consists of timed measures of balance, 3-meter walk, and 5-chair rises. The balance portion requires participants to stand with feet next to each other, the toes of one foot next to the heel of the other foot, and heel to toe for a 10 second duration. Scores are assigned based on the number of seconds the participant can stand in the position for balance. Scores for the chair rise and 3 meter walk are based on the time taken to complete the task. The scores are totaled to arrive at the Short Performance Physical Battery Score | Change from baseline to 10 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Protein intake, Coaching, Strength