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Composition and Function of the Gut Microbiota Post InterventionNCT05237154

Intermittent Fasting and Exercise: Effects on Gut Microbiota, Body Composition and Inflammation.

A study testing Intervention with intermittent fasting. and Intervention with high-intensity interval training. in people with Composition and Function of the Gut Microbiota Post Intervention and Metabolic and Inflammatory Variables Post Intervention, run by University of Sao Paulo at 2 sites in Brazil.

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

Obesity and overweight affect around 2 billion people worldwide. Despite the growing prevalence, the treatment of obesity is still an obscure field and the impacts of this disease on the clinical and public health perspective are urgent. Read more about this study

Who is it for?
Ages 18 to 40 years, women onlyHealthy volunteers can take part
What is being tested?
Intervention with intermittent fasting. and Intervention with high-intensity interval training.
Could I receive a placebo?
No, everyone receives an active treatment
How many people
60 participants
Where
2 sitesBrazil
Study dates
1 Jul 2018to 30 Jan 2019
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 18 to 40 years
  • Women only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Age between 18 and 40 years;
  • Women;
  • Have a regular menstrual cycle;
  • Body weight below 120 kg;
  • BMI between 30 kg/m2 and 40 kg/m2.

Who cannot join

  • Individuals with any disease;
  • Smokers;
  • Alcoholics;
  • Use regular medication;
  • Medical impediment to the practice of physical activities;
  • Carry out nutritional monitoring;
  • Being in treatment for weight loss;
  • Present some discomfort in long periods of fasting.

Trial locations and contacts

2 sites in 1 country.

Brazil2 sites
  • University of São Paulo, School of Physical Education and Sports of Ribeirão Preto.

    Ribeirão Preto, São Paulo, 14049-900

  • Gabriela Batitucci

    Ribeirão Preto, São Paulo

Other trials in Brazil

About this study

Official title: Secondary Effects of Intermittent Fasting and Physical Exercise on the Modulation of the Gut Microbiota, Body Composition and Inflammatory Process in Obesity.

Obesity and overweight affect around 2 billion people worldwide. Despite the growing prevalence, the treatment of obesity is still an obscure field and the impacts of this disease on the clinical and public health perspective are urgent. Studies have demonstrated a fundamental role of the gut microbiota in the pathogenesis of obesity and discuss the impacts of diet and physical exercise on the microbiome profile. However, the mechanisms involved in these processes, referring to strategies such as intermittent fasting associated with physical training, are still poorly explored and understood. It is believed that intermittent fasting combined with physical exercise can promote a remodeling of the composition and function of the microbiota and that the present investigation is promising in the prevention and treatment of obesity.

Read the detailed description

Background: Obesity and overweight affect about 2 billion people worldwide. Despite the growing prevalence, the treatment of obesity is still an obscure field and the impacts of this disease on the clinical and public health perspective are urgent. Studies have demonstrated a fundamental role of the gut microbiota in the pathogenesis of obesity and discuss the impacts of diet and physical exercise on the microbiome profile. However, the mechanisms involved in these processes, referring to strategies such as intermittent fasting associated with physical training, are still poorly explored and understood. It is believed that intermittent fasting combined with physical exercise can promote a remodeling of the composition and function of the microbiota and that the present investigation is promising in the prevention and treatment of obesity. Methods: 60 obese women will participate in the study and will be randomly divided into 3 groups: 1) the intermittent fasting group, submitted to a diet for 8 weeks (n= 20); 2) the physical exercise group, submitted to physical training for 8 weeks (n= 20); and 3) intermittent fasting group associated with physical exercise, submitted to both interventions for 8 weeks (n= 20). All volunteers will perform collections and evaluations (pre and post intervention) of anthropometry, food consumption, indirect calorimetry to assess resting energy expenditure, body composition by BodPod®, blood collection for biochemical analysis and gene expression, collection of feces for the analysis of the intestinal microbiota and physical tests (Shuttle Walking Test, multiple repetition test and functional strength) for the exercise groups. Expected results: The synergistic effects of the proposed intervention are expected to improve gut microbiota and metabolic parameters in obese women.

Being tested
Intervention with intermittent fasting., Intervention with high-intensity interval training.
Keywords
Obesity, Gut microbiota, Intermittent fasting, High-intensity interval training, Metataxononic, Body composition
Medical subject headings
Obesity, Intermittent Fasting

What participants receive

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

  • Intervention with intermittent fasting.Other

    Also called IF

    Intervention with fasting protocol of alternate days 2 days a week and the other days with ad libitum consumption. Restricted food in 25% of the total daily needs on the days of the intermittent fasting protocol, with 18 hours of fasting and 6 hours of restricted feeding (18:6).

  • Intervention with high-intensity interval training.Other

    Also called HIIT

    Intervention with high-intensity interval training, 3x per week, with intensity maintained between 70-85% of maximum heart rate.

Study groups in NCT05237154
Study groupRoleWhat they receive
Intermittent fasting (IF)ExperimentalAlternate-day intermittent fasting. Consumption of 25% of daily energy requirements on scheduled fasting days involving energy restriction for 2 non-consecutive days of the week and ad libitum feeding on the other 5 days of the week. Period: 8 weeks.
Receives: Other: Intervention with intermittent fasting.
Exercise: High-Intensity Interval Training (HIIT)ExperimentalHigh intensity circuit training. Progressive training protocol 3x/week, for 8 weeks, with at least 1 day of rest between sessions and duration of 25 minutes each session - 4 minutes of initial warm-up, 18 minutes of the main part and 3 minutes of relaxation. First and second week: 30 second run and recovery time. Third and fourth week: 35-second runtime and 25-second recovery time. Fifth and Sixth Week: 40-second runtime and 20-second recovery time. Seventh and eighth weeks: 45-second runtime and 15-second recovery time.
Receives: Other: Intervention with high-intensity interval training.

What is being measured

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

  1. Anthropometric changes (Body weight)

    Changes in body weight (kilograms - Kg) pre and post intervention.

    Measured: eight weeks

  2. Anthropometric - height assessment (meters)

    Height measured in meters

    Measured: eight weeks

  3. Anthropometric changes (BMI)

    Changes in body mass index (evaluated through a calculation that combines weight measured in kilograms divided by height in meters squared - BMI in kg/m^2) evaluated pre and post intervention.

    Measured: eight weeks

  4. Anthropometric changes (Circumferences)

    Changes in waist, abdominal, and hip circumferences (centimeters) evaluated pre and post intervention.

    Measured: eight weeks

  5. Body composition changes

    Changes in fat-free mass and fat mass evaluated pre and post intervention by whole-body air displacement plethysmography method, BodPod® .

    Measured: eight weeks

  6. Dietary intake changes

    Completion of the food record of three non-consecutive days, one day of the week that included the intermittent fasting protocol, another day of the week with ad libitum and a weekend day. This evaluation will take place pre-intervention, in the fourth week and after the intervention. Assessment of caloric intake, macronutrients and fiber evaluated pre and post intervention (Dietwin® software - São Paulo, Brazil).

    Measured: eight weeks

  7. Indirect calorimetry assessment

    Changes in resting metabolic rate (RMR) evaluated pre and post intervention by indirect calorimetry.

    Measured: eight weeks

  8. Indirect calorimetry assessment (energetic substrates)

    Changes in oxidation of substrates (lipids and carbohydrates) evaluated pre and post intervention by indirect calorimetry.

    Measured: eight weeks

  9. Changes in total cholesterol and lipid fractions

    Changes in total cholesterol, triglycerides, HDL-cholesterol and LDL-c evaluated pre and post intervention, quantified by Total Liquiform Cholesterol Kit, HDL Cholesterol Kit and Liquiform Triglycerides Kit, from Labtest diagnóstica®, using an enzymatic system and absorbance spectrophotometer.

    Measured: eight weeks

  10. Changes in plasma cytokines

    Changes in serum levels of cytokines IL-15, IL-10, TNF-α adiponectin, resistin, adipsin/Factor D, fetuin-A and C-reactive protein evaluated pre and post intervention, by MILLIPLEX® Kit.

    Measured: eight weeks

  11. Changes in nitrogen balance

    Determination of urinary nitrogen by chemiluminescence method. 24-hour urine analysis evaluated pre and post intervention. Calculation of nitrogen balance by a equation.

    Measured: eight weeks

  12. Changes in concentration of short-chain fatty acids (acetate, propionate, and butyrate)

    Quantification of short-chain fatty acids using stool samples, evaluated pre and post intervention, by gas chromatography method.

    Measured: eight weeks

  13. Changes in gut microbiota_Extraction and DNA sequencing and library preparation.

    Total fecal DNA extraction using the QIAamp 96 PowerFecal kit (Mobio-QIAGEN). Regions of interest V2-V3, V3-V4 and V4-V5 present in the extracted total DNA. Amplification and preparation of libraries according to the Illumina® kit protocol. 16S sequencing by Illumina® company's MiSeq platform. Metataxonomic analysis of 16S rDNA sequences by bioinformatics. Assessments analyzed pre and post intervention.

    Measured: eight weeks

  14. Changes in aerobic performance

    Physical tests performed pre and post intervention to assess aerobic physical fitness by incremental test adapted from Shuttle Walking.

    Measured: eight weeks

  15. Changes in strength performance

    Maximum dynamic muscular strength by test of multiple maximum repetitions (RM) in the leg press 45° and in the bench press.

    Measured: eight weeks

  16. Changes in strength performance

    Assessment of changes in maximal isometric muscle strength of the dorsal region and handgrip by dynamometry.

    Measured: eight weeks

  17. Changes in strength performance

    Strength endurance capacity by 1-minute functional tests (squat, free squat and push-up).

    Measured: eight weeks

Timeline

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

  1. First posted11 Feb 2022
  2. Study start1 Jul 2018
  3. Primary completion15 Dec 2018
  4. Study completion30 Jan 2019

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
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Randomized clinical trial.
Masking
None (open label)
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05237154
Sponsor's protocol ID
Gut Microbiota-Obesity
Status last verified
Feb 2022
First submitted
20 Jan 2022
Last updated
11 Feb 2022
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Batitucci G, Almeida OG, De Martinis ECP, Solar I, Cintra DE, de Freitas EC. Intermittent fasting and high-intensity interval training do not alter gut microbiota composition in adult women with obesity. Am J Physiol Endocrinol Metab. 2024 Sep 1;327(3):E241-E257. doi: 10.1152/ajpendo.00310.2023. Epub 2024 Jun 26.

    PubMed 38922577
  • Batitucci G, Faria Junior EV, Nogueira JE, Brandao CFC, Abud GF, Ortiz GU, Marchini JS, Freitas EC. Impact of Intermittent Fasting Combined With High-Intensity Interval Training on Body Composition, Metabolic Biomarkers, and Physical Fitness in Women With Obesity. Front Nutr. 2022 May 26;9:884305. doi: 10.3389/fnut.2022.884305. eCollection 2022.

    PubMed 35694163

Questions about this trial

What is this clinical trial studying?

A study testing Intervention with intermittent fasting. and Intervention with high-intensity interval training. in people with Composition and Function of the Gut Microbiota Post Intervention and Metabolic and Inflammatory Variables Post Intervention, run by University of Sao Paulo at 2 sites in Brazil.

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 5 inclusion and 8 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 11 Feb 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Brazil. 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?

Anthropometric changes (Body weight) (time frame: eight weeks). The study lists 17 primary outcomes in all. 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 NCT05237154, which also lists 2 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 11 Feb 2022.

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