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Impact of dietary shifts on nutrition and health

Protein-i: the impact of diversification of protein intake on biomarkers of nutrition status and health in an adult population - a randomized controlled trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN15163915
Enrollment
220
Registered
2023-05-05
Start date
2023-05-17
Completion date
Unknown
Last updated
2023-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dietary protein intake Nutritional, Metabolic, Endocrine

Interventions

The research design is a 16-week, single-centre, single-blinded randomised controlled trial, where participants will be guided to diversify their protein intake using their current protein dietary pat

Sponsors

University College Dublin
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Men and women aged 18–65 years old 2. In good health 3. Body mass index (BMI) 18–35 kg/m²

Exclusion criteria

Exclusion criteria: 1. A diagnosed medical condition (such as cancer or diabetes) 2. An energy-restricted diet or a medically prescribed diet

Design outcomes

Primary

MeasureTime frame
Dietary quality is measured using the Healthy Eating Index, which will be calculated from dietary intake data collected from the participants via two 24-hour dietary recalls completed at the study baseline (Week 0) and study completion (Week 16)

Secondary

MeasureTime frame
1. Biomarkers of dietary intake measured via blood and urine samples at study baseline (Week 0) and study completion (Week 16) 2. Biomarkers of health measured via blood and urine samples, anthropometric and strength measurements at study baseline (Week 0) and study completion (Week 16) 3. Biomarkers of nutrient adequacy measured via blood and urine samples at study baseline (Week 0) and study completion (Week 16) 4. Barriers to and facilitators of diversifying protein intake examined using an optional focus group/interview with participants in the intervention group after study completion (after week 16)

Countries

Ireland

Contacts

Public ContactAoife Courtney
aoife.courtney.1@ucdconnect.ie+353 (0)1 716 6806

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026