- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02208622
Bioavailability of Zinc and Iron From a Whey-based Protein Supplement Consumed With a Habitual Plant-based Diet
Study Overview
Status
Conditions
Detailed Description
Study 1: Zinc absorption studies The zinc study employed a 2-day cross-over design, labeling the WPS diet with a different zinc stable isotope (67Zn) than the control diet (70Zn). All meals during the 2-day period were labeled with tracer. The dual isotope ratio technique was used with a 3rd Zn stable isotope (68Zn) given intravenously and urine enrichment of all isotopes measured on Study Days 6-9 to measure fractional absorption of Zn (FAZ). The amount of Zn absorbed for the day was determined by multiplying the Zn intake for the day (determined from lab analyses of duplicate test meals) by the FAZ. Children (n=16) were randomized as to the order in which they consume the test and control meals on Study Day 1 and 2.
Study 2: Iron absorption studies The iron study was a cross sectional study with one group receiving control meals and the second group receiving the same control meal plus WPS. Iron absorption was measured using the erythrocyte iron incorporation technique with labeling of all meals over 2 days (58Fe). This was preceded by a reference dose of Fe57 and ascorbate on the previous day. Children (n=32) were randomized to receive the control diet or intervention diet (control diet + WPS).
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Queretaro, Mexico
- Universidad Autónoma de Querétaro
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Colorado
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Aurora, Colorado, United States, 80045
- University of Colorado Anschutz Medical Campus
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- 2-3 years of age
- Live in poor, rural communities
- Healthy
- Parents had provided informed consent
Exclusion Criteria:
- An acute or chronic illness which affects gut function, or
- They are breast feeding.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: OTHER
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: QUADRUPLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Study 1: Whey Supplement Day 1
Children in this arm received the whey supplement as part if their diet on day 1.
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Whey supplement was given on day 1, control diet on day 2
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EXPERIMENTAL: Study 1: Whey Supplement Day 2
Children in this arm received whey supplement as part of their diet on day 2.
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Control diet was given day 1, whey supplement was given day 2
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EXPERIMENTAL: Study 2: Whey Supplement
Children in this arm received a whey supplement as part of their diet.
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Whey supplement was given as part of diet for both day 1 and 2 of study
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NO_INTERVENTION: Study 2: Control
Children in this arm did not receive a whey supplement as part of their diet.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Zinc Absorption
Time Frame: 2 days
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Absorption of zinc was compared in young children when given a habitual diet with and without a whey protein supplement.
Fractional absorption of zinc for a day was measured by extrinsic labeling with stable isotopes of zinc.
Fractional absorption of zinc was measured by a dual isotope tracer ratio technique.
Measurement of total zinc in duplicate diets on test day will allow determination of quantity of this micronutrient absorbed (mg/d).
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2 days
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Iron Absorption
Time Frame: 2 days
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Absorption of iron was compared in young children when given a habitual diet with and without a whey protein supplement.
Fractional absorption of iron for two days was measured by extrinsic labeling with stable isotopes of iron and measuring erythrocyte enrichment.
Measurement of total iron in duplicate diets on test days will allow determination of quantity of this micronutrient absorbed (mg/d).
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2 days
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Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 13-0398
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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