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OverweightNCT04011995

Effects of Intermittent Caloric Restriction in Youth With Cardiometabolic Risk

A study testing Intermittent caloric restriction, Low carbohydrate diet and Health education on reducing the cardiometabolic risk in people with Overweight and Obesity, run by Children's Hospital of Fudan University at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a randomized controlled pilot study to evaluate the effects of intermittent caloric restriction compared with low carbohydrate diet in youth with cardiometabolic risk. Read more about this study

Who is it for?
Ages 9 to 30 years
Conditions the study is for
Overweight, Obesity, Cardiometabolic Risk
What is being tested?
Intermittent caloric restriction, Low carbohydrate diet and Health education on reducing the cardiometabolic risk
Could I receive a placebo?
No, everyone receives an active treatment
How many people
34 participants
Where
1 siteChina
Study dates
12 Jul 2018to 1 Dec 2021
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 9 to 30 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Who may be able to join

  • Have at least one of the following cardiometabolic abnormalities:
  • Overweight or obesity (central obesity or general obesity)
  • Prediabetes: impaired fasting glucose (IFG) and/or impaired glucose tolerance (IGT)
  • Dyslipidemia
  • Elevated blood pressure
  • Criteria for cardiometabolic abnormalities:
Show all 26Show fewer
  • Overweight or obesity
  • For subjects (9 ≤ age ≤ 18 years) :
  • General obesity: Body mass index higher than the 85th percentile for overweight and the 90th percentile for obesity, based on the references for screening overweight and obesity in Chinese children and adolescents.
  • Central obesity: Waist circumference higher than the 90th percentile of the age and gender-specific reference for screening cardiovascular risk factors in Chinese children and adolescents.
  • For subjects ( 19 ≤ age ≤ 30 years) :
  • General obesity: Body mass index between 24.0 and 27.9 kg/m2 for overweight and ≥28 kg/m2 for obesity.
  • Central obesity: Waist circumference ≥85cm for men and ≥80cm for female. Based on recommendation of overweight and obesity in Chinese adults.
  • Prediabetes:
  • With IFG and/or IGT. IFG: fasting glucose from 5.6 to 6.9 mmol/L; IGT: 2-h glucose in the 75g oral glucose tolerance test from 7.8 to 11.0 mmol/L.
  • Based on recommendation of American Diabetes Association.
  • Dyslipidemia:
  • For subjects (9 ≤ age ≤ 18 years) :
  • Triglycerides of ≥1.70 mmol/L or total cholesterol of ≥5.18 mmol/L or lowdensity lipoprotein cholesterol ≥3.37 mmol/L or highdensity lipoprotein cholesterol of ≤1.04 mmol/L. Based on recommendation in Chinese children and adolescents.
  • For subjects ( 19 ≤ age ≤ 30 years) :
  • Triglycerides of ≥1.7 mmol/L or total cholesterol of ≥5.2 mmol/L or lowdensity lipoprotein cholesterol ≥3.4 mmol/L or highdensity lipoprotein cholesterol of ≤1.0 mmol/L. Based on guideline for the management of dyslipidemia in Chinese adults.
  • Elevated blood pressure:
  • For subjects (9 ≤ age ≤ 18 years) :
  • Blood pressure higher than the 90th percentile of blood pressure age and gender-specific reference standards for Chinese children and adolescents, or blood pressure >120/80 mmHg.
  • For subjects ( 19 ≤ age ≤ 30 years) :
  • Systolic blood pressure≥120 mmHg and/or diastolic blood pressure ≥80 mmHg. Based on Chinese guidelines for the management of hypertension.

Who cannot join

  • Diagnosis of severe diseases such as cardiac insufficiency, severe malnutrition or immunodeficiency.
  • History of bariatric surgery.
  • Use of antiobesity drugs or supplements.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Children's Hospital of Fudan University

    Shanghai

Other trials in China

About this study

Official title: Effects of Intermittent Caloric Restriction in Youth With Cardiometabolic Risk: a Randomized Controlled Pilot Study

This is a randomized controlled pilot study to evaluate the effects of intermittent caloric restriction compared with low carbohydrate diet in youth with cardiometabolic risk.

Read the detailed description

The National China Health and Nutrition Survey revealed that 42% of overweight children had at least one cardiovascular metabolic risk, such as hyperglycaemia, dyslipidemia or hypertension. Non-pharmaceutical life style modifications are the recommended intervention to these subjects, including caloric restriction and increased physical activity. However, the problems of poor compliance and metabolic adaptation are well known. Evidences from a number studies in rodent models and human indicated that intermittent caloric restriction (ICR) may stimulate series reactions in human body, including improvement of insulin sensitivity, blood pressure, oxidative stress and inflammation, and may be easier to follow. Evidence from larger human studies is strongly encouraged, while the effects, safety and adherence in chidren and youth need to be studied.

This study is a randomized controlled trial of intermittent caloric restriction versus low carbohydrate diet in youth with cardiometabolic risk over one month period. The intervention is based on the 5:2 diet, which involves caloric restriction for 2 days (consecutive or nonconsecutive, 600kcal/d for male and 500kcal/d for female) per week and unrestricted eating during the other 5 days of the week. For control group, the subjects receive 7 days (consecutive or nonconsecutive) of low carbohydrate diet intervention during the 14-day intervention period,. Carbohydrate intake of low-carbohydrate diet should be controlled as ≤ 50g per day. Total trial duration is one month consisting of a 14-day intervention phase and a 14-day self-maintenance phase. During the maintenance phase, two follow-up electronic questionnaires were conducted.

The study aim to explore effects of the dietary interventions on cardiometabolic markers, inflammatory reaction, oxidative stress and gut microbiome in youth with cardiometabolic risk.

Being tested
Intermittent caloric restriction, Low carbohydrate diet, Health education on reducing the cardiometabolic risk
Keywords
Intermittent caloric restriction, Children, Youth
Medical subject headings
Overweight, Obesity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Intermittent caloric restrictionBehavioural

    Also called Intermittent fasting

    The intervention is based on the 5:2 diet, which involves caloric restriction for 2 days (consecutive or nonconsecutive, 600kcal/d for male and 500kcal/d for female) per week and unrestricted eating during the other 5 days of the week.

    Total trial duration is one month consisting of a 14-day intervention phase and a 14-day self-maintenance phase. During the maintenance phase, two follow-up electronic questionnaires were conducted.

  • Low carbohydrate dietBehavioural

    During the 14-day intervention period, the subjects receive 7 days (consecutive or nonconsecutive) of low carbohydrate diet intervention. Carbohydrate intake of low-carbohydrate diet should be controlled as ≤ 50g per day.

    Total trial duration is one month consisting of a 14-day intervention phase and a 14-day self-maintenance phase. During the maintenance phase, two follow-up electronic questionnaires were conducted.

  • Health education on reducing the cardiometabolic riskBehavioural

    Health education is conducted once a week during 14-day dietary intervention for all subjects. Health education including the understanding of cardiovascular disease, how to determine the cardiometabolic risk level, and the lifestyle intervention as caloric restriction and increased physical activity to promote health.

Study groups in NCT04011995
Study groupRoleWhat they receive
Intermittent caloric restrictionExperimentalNot described
Receives: Behavioral: Intermittent caloric restriction; Behavioral: Health education on reducing the cardiometabolic risk
Low carbohydrate dietActive comparatorNot described
Receives: Behavioral: Low carbohydrate diet; Behavioral: Health education on reducing the cardiometabolic risk

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Reversal of cardiometabolic abnormalities

    The primary outcome is a composite outcome that will be measured by combining multiple reverse outcomes of the following cardiometabolic abnormalities: (1) overweight or obesity, (2) prediabetes, (3) hyperlipidemia and (4) elevated blood pressure. It is defined as occurring if any cardiometabolic abnormality has a reversal outcome at the 14th day of dietary intervention phase.

    Reversal of cardiometabolic abnormalities is defined as:

    At the 14th day of dietary intervention phase, at least one of the following indicators changed from abnormal at baseline to normal: overweight, obesity, prediabetes, hyperlipidemia and elevated blood pressure.

    (The reversal of overweight or obesity is defined according to reference[1, 2]: For subject with general obesity at baseline: weight loss of 1.5 kg after intervention; For subject with central obesity at baseline: waist circumference reduction of 1.5 cm after intervention.)

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

Secondary outcomes (13)
  1. Change in insulin

    Serum from fasting blood sample is used for measurement of insulin.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  2. Change in insulin-like growth factor-1

    Fasting blood sample for measurement of insulin-like growth factor-1.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  3. Change in mean blood glucose

    Measured by a blood glucose monitor for 24-hour glucose monitoring during the 14-day intervention phase.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  4. Change in gut microbial compositions

    Stool sample of subject is used for measurement of gut microbial compositions.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  5. Change in body weight

    Body weight is measured according to the Physical Fitness and Health Surveillance of Chinese School Students by trained, certified study staff. It is measured to the nearest 0.1 kg.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  6. Change in body weight

    Body weight is measured by subject and reported by electronic questionnaire. It is measured to the nearest 0.1 kg.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the self-maintenance phase.

  7. Change in waist circumference

    Waist circumference is measured to the nearest 0.1 cm using a constant tension tape around the waist at 1 cm below the navel as the subject exhaled. It is calculated as the average value of two measurements.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  8. Change in waist circumference

    Waist circumference is measured by subject and reported by electronic questionnaire. It is measured to the nearest 0.1 cm using a constant tension tape around the waist at 1 cm below the navel as the subject exhaled. It is calculated as the average value of two measurements.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the self-maintenance phase.

  9. Dietary energy intake

    Daily dietary energy intake (kcals/day) is calculated by researchers using food weighing photos of the subject.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  10. Self-reported dietary adherence

    Adherence to diet will be assessed with a electronic questionnaire in the self-maintenance phase.

    Measured: At the 14th day of the self-maintenance phase.

  11. Change in monocyte chemoattractant protein-1 (MCP-1)

    MCP-1 will be measured by enzyme-linked immunosorbent assays (R\&D Systems, Inc. USA), using fasting serum samples at baseline and 14 days after intervention.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  12. Change in free fatty acid (FFA)

    FFA will be measured by enzyme-linked immunosorbent assays (R\&D Systems, Inc. USA), using fasting serum samples at baseline and 14 days after intervention.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

  13. Change in fibroblast growth factor 21 (FGF-21)

    FGF-21 will be measured by enzyme-linked immunosorbent assays (R\&D Systems, Inc. USA), using fasting serum samples at baseline and 14 days after intervention.

    Measured: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Jul 2019
  2. Study start12 Jul 2018
  3. Primary completion16 Nov 2021
  4. Study completion1 Dec 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
34 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04011995
Sponsor's protocol ID
ICR_2019_2.0
Status last verified
Mar 2022
First submitted
4 Jul 2019
Last updated
22 Mar 2022
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Harvie MN, Pegington M, Mattson MP, Frystyk J, Dillon B, Evans G, Cuzick J, Jebb SA, Martin B, Cutler RG, Son TG, Maudsley S, Carlson OD, Egan JM, Flyvbjerg A, Howell A. The effects of intermittent or continuous energy restriction on weight loss and metabolic disease risk markers: a randomized trial in young overweight women. Int J Obes (Lond). 2011 May;35(5):714-27. doi: 10.1038/ijo.2010.171. Epub 2010 Oct 5.

    PubMed 20921964
  • Arnason TG, Bowen MW, Mansell KD. Effects of intermittent fasting on health markers in those with type 2 diabetes: A pilot study. World J Diabetes. 2017 Apr 15;8(4):154-164. doi: 10.4239/wjd.v8.i4.154.

    PubMed 28465792
  • Dou Y, Jiang Y, Chen X, Zhang Y, Wang Y, Chen H, He W, Yan W. Intermittent dietary carbohydrate restriction versus calorie restriction and cardiometabolic profiles: A randomized trial. Obesity (Silver Spring). 2023 Sep;31(9):2260-2271. doi: 10.1002/oby.23855. Epub 2023 Aug 7.

    PubMed 37545298

Questions about this trial

What is this clinical trial studying?

A study testing Intermittent caloric restriction, Low carbohydrate diet and Health education on reducing the cardiometabolic risk in people with Overweight and Obesity, run by Children's Hospital of Fudan University at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 26 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 22 Mar 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Reversal of cardiometabolic abnormalities (time frame: From the baseline (the first day of the intervention phase) to the 14th day of the intervention phase.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04011995, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Mar 2022.

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