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Exploring Adherence and Acceptability of an Intermittent Carbohydrate Restriction Regime in Free-Living Adults: A Feasibility Study

NCT07056465 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 37

Last updated 2025-07-09

No results posted yet for this study

Summary

This study investigates a novel dietary approach called Intermittent Carbohydrate Restriction (ICR), which involves reducing carbohydrate intake on selected days of the week while allowing habitual eating on other days. Previous research suggests that intermittent dietary strategies may improve metabolic health and support better adherence compared to continuous calorie restriction.

In this single-arm feasibility study, 40 healthy adults will follow the ICR protocol for 4 weeks. Outcomes including body weight, body fat percentage, waist circumference, and resting metabolic rate will be measured before and after the intervention. Dietary adherence, changes in habitual intake, and participant experiences will be assessed through food diaries, 24-hour recalls, questionnaires, and exit interviews.

The primary aim is to evaluate the acceptability and adherence to the ICR protocol in free-living conditions. Secondary aims include exploring its effects on body composition and diet-related behaviours, with the goal of informing future long-term dietary interventions.

Conditions

  • Healthy

Interventions

BEHAVIORAL

Intermittent Carbohydrate Restriction (ICR) Protocol

A novel intermittent carbohydrate restriction (ICR) protocol involving two consecutive low-carbohydrate days (approximately 10% total energy from carbohydrate) followed by five non-restricted days per week, sustained over a 4-week period. Participants receive individualised dietary guidance and support materials to promote adherence in free-living conditions

Sponsors & Collaborators

  • University of Surrey

    lead OTHER

Principal Investigators

  • Kevin Wells, Dr · University of Surrey

Study Design

Allocation
NA
Purpose
PREVENTION
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-01-13
Primary Completion
2024-03-20
Completion
2024-04-20

Countries

  • United Kingdom

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07056465 on ClinicalTrials.gov