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Metabolic Dysfunction-Associated Steatotic Liver DiseaseNCT07386665

Impact of Circadian Exercise on Metabolic Dysfunction-Associated Steatotic Liver Disease in Postmenopausal Women

A study testing Morning exercise group and Evening exercise group in people with Metabolic Dysfunction-Associated Steatotic Liver Disease and Cardiometabolic Diseases, run by Universidad de Almeria at 1 site in Spain.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Type of Study: Clinical Trial Goal: The goal of this clinical trial is to investigate how performing exercise at different times of day (morning vs. evening) affects liver fat, cardiometabolic health, and gut microbiota in postmenopausal women. Read more about this study

Who is it for?
Ages 45 to 75 years, women only
What is being tested?
Morning exercise group and Evening exercise group
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
63 participants
Where
1 siteSpain
Study dates
1 Jun 2026to Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

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 45 to 75 years
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Women aged 45-75 years, postmenopausal for at least two years (stage +1a)
  • Body Mass Index (BMI) > 25 and < 40 kg/m²
  • Diagnosed hepatic steatosis (via ultrasound hyperechogenicity, FibroScan CAP score >280, or histological confirmation)
  • Sedentary lifestyle (no regular structured exercise)
  • Willingness to be randomized and adhere to study procedures, including all assessments and visits
  • Sufficient Spanish proficiency to understand and follow study instructions
  • Consent to store biological samples for future research
  • Participants should have a healthy circadian rhythm

Who cannot join

  • Contraindications for MRI (e.g., claustrophobia, pacemaker, metal implants)
  • History of major cardiovascular, endocrine, neurological, or kidney disease, or any clinical abnormalities (to be judged by the study physician)
  • First-degree family history of sudden cardiac death
  • Alcohol or substance abuse
  • Psychiatric, psychotic, eating, or sleep disorders (to be judged by the study physician)
  • Prior bariatric surgery, diagnosed HIV/AIDS, or inflammatory/autoimmune diseases
Show all 11Show fewer
  • Cancer or any medical condition where exercise is contraindicated (to be judged by the study physician)
  • Recent or unstable metabolic conditions (e.g., diabetes, recent medication changes, or use of drugs affecting metabolism)
  • Recent (<3 months) use of antibiotics, statins, glucocorticoids, hormonal therapies, amiodarone, or myelosuppressive agents
  • Participation in weight-loss programs or special diets (e.g., ketogenic, high-carb)
  • Shift workers or caregivers with frequent nocturnal disruptions

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Spain1 site
  • Universidad de Almería

    Almería

    Juan M. A. Alcantara, Ph.D., +34, alcantarajma@ual.es

Other trials in Spain

About this study

Type of Study: Clinical Trial

Goal: The goal of this clinical trial is to investigate how performing exercise at different times of day (morning vs. evening) affects liver fat, cardiometabolic health, and gut microbiota in postmenopausal women.

Read more

Participant Population/Health Conditions: The study will involve 63 sedentary postmenopausal women (aged 45-75) diagnosed with metabolic dysfunction-associated steatotic liver disease.

Main Questions: The main questions this study aims to answer are:

  • Does morning exercise reduce hepatic fat more effectively than evening exercise?
  • How does time-of-day-specific exercise influence cardiometabolic markers?
  • Do changes in gut microbiota contribute to the metabolic effects of exercise timing?

Participants Will:

Be randomized into one of three groups: morning exercise, evening exercise, or a usual-care control group.

Follow the assigned regimen for 12 weeks. The exercise groups will perform supervised aerobic and resistance training three times per week.

Provide blood, stool, and imaging data before and after the intervention to determine the effects of the intervention.

Comparison Group:

Researchers will compare the effects of morning vs. evening exercise (and usual care) on hepatic fat reduction and cardiometabolic improvement, as well as changes in gut microbiota.

Read the detailed description

Metabolic dysfunction-associated steatotic liver disease (MASLD) affects approximately one in three adults and is a major contributor to the growing burden of cardiometabolic disease. Exercise is one of the most effective interventions for improving cardiometabolic health, reducing hepatic fat, and enhancing metabolic flexibility. However, the timing of exercise -a modifiable behavioral factor- may play a crucial yet underexplored role in determining its physiological benefits.

Preclinical studies have shown that circadian rhythms regulate key metabolic processes, including lipid metabolism and glucose homeostasis. Moreover, recent findings suggest that exercise performed at different times of day may elicit different responses, influencing the regulation of hepatic fat and systemic inflammation. These effects may be mediated, in part, through gut microbiota, which modulate host metabolism via the gut-liver axis. However, the interaction between exercise timing and gut microbiota in human physiology -particularly in women- remains poorly understood.

This knowledge gap is particularly critical in postmenopausal women, a population that experiences profound metabolic changes due to hormonal decline, including increased hepatic and visceral fat, chronic inflammation, and reduced insulin sensitivity. These alterations significantly elevate the risk for MASLD and other cardiometabolic diseases. Yet, postmenopausal women are consistently underrepresented in clinical trials exploring exercise interventions.

Based on emerging scientific evidence, the investigators hypothesize that morning exercise may lead to greater reductions in hepatic fat and improvements in cardiometabolic health compared to evening exercise in postmenopausal women with MASLD. Furthermore, the investigators propose that these effects may be partially mediated by exercise-induced changes in gut microbiota composition and function.

Thus, the main objective of the project is to investigate whether the timing of exercise modulates hepatic fat reduction, cardiometabolic adaptation, and gut microbiota remodeling in postmenopausal women with MASLD. To achieve this, the project will implement a randomized controlled trial in which 63 sedentary postmenopausal women diagnosed with MASLD will be randomly allocated into one of three groups: (i) morning exercise (07:00h), (ii) evening exercise (19:00h), or (iii) a usual-care control group receiving lifestyle recommendations.

Participants in the intervention groups will complete a 12-week supervised training program, combining aerobic and resistance exercise (3 sessions/week, 60-90 minutes per session), in accordance with WHO recommendations. Before and after the intervention, biological samples, magnetic resonance imaging, and metabolic assessments will be collected. The study will employ advanced multi-omics analyses, including metabolomics and semi-targeted metagenomics, to explore how gut microbiota changes relate to improvements in metabolism.

Being tested
Morning exercise group, Evening exercise group, Usual-care control group
Keywords
Exercise, Metabolism, Health, Women
Medical subject headings
Motor Activity

What participants receive

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

  • Morning exercise groupBehavioural

    Participants perform supervised exercise sessions at 07:00h

  • Evening exercise groupBehavioural

    Participants perform supervised exercise sessions at 19:00h

  • Usual-care control groupBehavioural

    Participants receive lifestyle recommendations without exercise

Study groups in NCT07386665
Study groupRoleWhat they receive
Usual-Care Control GroupPlacebo comparatorNot described
Receives: Behavioral: Usual-care control group
Morning Exercise GroupExperimentalNot described
Receives: Behavioral: Morning exercise group
Evening Exercise GroupExperimentalNot described
Receives: Behavioral: Evening exercise group

What is being measured

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

  1. Hepatic fat content

    Hepatic fat content will be quantified using MRI

    Measured: Change from baseline in the mean adipose tissue content at 12 weeks

Secondary outcomes (29)
  1. Visceral adipose tissue

    Visceral adipose tissue will be quantified using MRI

    Measured: Change from baseline in the mean adipose tissue content at 12 weeks

  2. Intra-muscular adipose tissue

    Intra-muscular adipose tissue, at the mid thigh, will be quantified using MRI

    Measured: Change from baseline in the mean adipose tissue content at 12 weeks

  3. Body composition

    Whole-body composition will be quantified using DXA. Fat mass (in kg), and lean mass (in kg) will be assessed

    Measured: Change from baseline in the whole-body composition at 12 weeks

  4. Bone related parameters

    Whole-body bone related parameters will be quantified using DXA. Bone mineral density and content (both in g/cm^2) will be assessed

    Measured: Change from baseline in the whole-body mineral density and content at 12 weeks

  5. Resting blood pressure

    Systolic pressure (mmHg) and diastolic pressure (mmHg) will be measured.

    Measured: Change from baseline in the resting blood pressure related parameters at 12 weeks

  6. Glucose metabolism

    Glucose metabolism (mg/dl) will be assessed via an oral glucose tolerance test with serial glucose measurements. Continuous glucose monitoring systems will be used to monitor 24-hour glycemic fluctuations (mg/dl) under free-living conditions

    Measured: Change from baseline in the glucose related parameters at 12 weeks

  7. Energy metabolism

    Resting energy expenditure and exchange ratio will be determined using indirect calorimetry. Exercise energy expenditure and exchange ratio will be assessed during a steady-state submaximal exercise at 40-60% of VO2max

    Measured: Change from baseline in the energy metabolism related parameters at 12 weeks

  8. Cardiorespiratory Fitness

    VO₂max will be assessed following an incremental test to exhaustion.

    Measured: Change from baseline in the cardiorespiratory fitness at 12 weeks

  9. Muscular strength

    Muscular strength will be evaluated using 1-RM and/or maximal isometric strength tests for both upper and lower body strength.

    Measured: Change from baseline in the muscular strength related parameters at 12 weeks

  10. 30 seconds sit-to-stand test

    The 30-s sit-to-stand test will be conducted for evaluating the functional physical fitness (lower body strenth).

    Measured: Change from baseline in the sit-to-stand related parameters at 12 weeks

  11. Heart rate and heart rate variability

    Heart rate (maximum and minimum values) and heart rate variability will be assessed at both, rest and exercise periods

    Measured: Change from baseline in the heart rate and heart rate variability related parameters at 12 weeks

  12. Body weight

    Body weight (in kg) will be assessed using a scale.

    Measured: Change from baseline in the body weight at 12 weeks

  13. Height

    Height (in m) will be assessed using a stadiometer.

    Measured: Change from baseline in the height at 12 weeks

  14. Body mass index

    Body weight (in kg) and height (in m) will be combined to report BMI in kg/m^2

    Measured: Change from baseline in the height at 12 weeks

  15. Fasting glucose levels

    Fasting blood samples will be analyzed to determine glucose levels (mg/dl).

    Measured: Change from baseline in the fasting glucose levels at 12 weeks

  16. Fasting insulin levels

    Fasting blood samples will be analyzed to determine insulin levels (µmol/L).

    Measured: Change from baseline in the fasting insulin levels at 12 weeks

  17. Fasting HbA1c levels

    Fasting blood samples will be analyzed to determine HbA1c levels (mmol/mol).

    Measured: Change from baseline in the fasting HbA1c levels at 12 weeks

  18. Fasting cholesterol, high-density lipoprotein (HDL), and low-density lipoprotein (LDL) levels

    Fasting blood samples will be analyzed to determine cholesterol, HDL, and LDL levels (mg/dl).

    Measured: Change from baseline in the fasting cholesterol, HDL, and LDL levels at 12 weeks

  19. Relative abundance of specific bacterial taxa - fecal microbiota composition

    Fecal samples will be collected before and after the exercise intervention to analyze the composition of the fecal microbiota. Percentage of total sequences assigned to specific taxa (e.g., Firmicutes, Bacteroidetes, Akkermansia) will be determined, and results will be expressed as percentage of total sequences (i.e., %) and/or relative abundance (i.e., proportion).

    Measured: Change from baseline in the fecal microbiota at 12 weeks

  20. Alpha diversity of the fecal microbiota - fecal microbiota diversity

    Fecal samples will be collected before and after the exercise intervention to analyze the diversity of the fecal microbiota. Assessment of microbial richness and evenness within each sample will be determined, and results will be expressed as score on the Shannon Index / Simpson Index / observed OTUs.

    Measured: Change from baseline in the fecal microbiota at 12 weeks

  21. Concentration of specific metabolites - fecal microbiota function

    Fecal samples will be collected before and after the exercise intervention to analyze the functional profile of the fecal microbiota (i.e., the concentration of metabolites). Quantification of metabolites (e.g., short-chain fatty acids [SCFAs]) will be determined, and results will be expressed as micromoles per gram of feces, millimolar, counts per million, or relative abundance of functional genes.

    Measured: Change from baseline in the fecal microbiota at 12 weeks

  22. International Physical Activity Questionnaire

    The International Physical Activity Questionnaire (IPAQ) will be used for quantifying total physical activity in Metabolic Equivalent of Task-minutes per week (MET-min/week). In this questionnaire, a higher score indicates a greater volume of physical activity

    Measured: Change from baseline in the questionnaire score at 12 weeks

  23. Morningness-Eveningness Questionnaire

    The Morningness-Eveningness Questionnaire (MEQ) will be used for determining the individual's circadian typology. In this questionnaire, a higher score indicates a stronger "morning-type" preference and a lower score signifies an "evening-type" preference

    Measured: Change from baseline in the questionnaire score at 12 weeks

  24. Pittsburgh Sleep Quality Index Questionnaire

    The Pittsburgh Sleep Quality Index (PSQI) will be used to assess subjective sleep quality and disturbances over a one-month period. In this questionnaire, a higher score represents poorer sleep quality; a score exceeding 5 typically denotes clinically poor global sleep quality. Additionally, participants will complete a sleep diary to record their daily sleep patterns and determine the actual hours of rest.

    Measured: Change from baseline in the questionnaire score at 12 weeks

  25. Three-Factor Eating Questionnaire

    The Three-Factor Eating Questionnaire (TFEQ) or TFEQ-R18 will be used for measuring three components of eating behavior (Cognitive Restraint, Emotional Eating, and Uncontrolled Eating). In this questionnaire, elevated subscale scores indicate more disordered or problematic eating patterns

    Measured: Change from baseline in the questionnaire score at 12 weeks

  26. Perceived Stress Scale Questionnaire

    The Perceived Stress Scale (PSS) will be used for measuring the degree to which life situations are appraised as stressful. In this questionnaire, a higher total score indicates a higher level of perceived psychological stress

    Measured: Change from baseline in the questionnaire score at 12 weeks

  27. Depression, Anxiety, and Stress Scale Questionnaire

    The Depression, Anxiety, and Stress Scale (DASS-21) will be used for providing three independent severity subscales (Depression, Anxiety, and Stress). In this questionnaire, an increased score on any subscale signifies a greater severity of symptomatology and a diminished mental health status

    Measured: Change from baseline in the questionnaire score at 12 weeks

  28. Beck Depression Inventory Questionnaire

    The Beck Depression Inventory (BDI-II) will be used for measuring depressive symptom severity. In this questionnaire, a higher score correlates directly with greater depressive symptom severity

    Measured: Change from baseline in the questionnaire score at 12 weeks

  29. Profile of Mood States Questionnaire

    The Profile of Mood States (POMS) will be used for assessing transient mood states. In this questionnaire, higher scores on negative subscales indicate a poorer mood state, while an increased score on the Vigor scale indicates a more favorable mood

    Measured: Change from baseline in the questionnaire score at 12 weeks

Timeline

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

  1. First posted4 Feb 2026
  2. Study start1 Jun 2026 (estimated)
  3. Primary completionDec 2027 (estimated)
  4. Study completionDec 2027 (estimated)

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
Masking
None (open label)
Enrolment
63 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07386665
Sponsor's protocol ID
UALBIO2025/008
Status last verified
May 2026
First submitted
16 Sep 2025
Last updated
8 May 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A study testing Morning exercise group and Evening exercise group in people with Metabolic Dysfunction-Associated Steatotic Liver Disease and Cardiometabolic Diseases, run by Universidad de Almeria at 1 site in Spain.

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 8 inclusion and 11 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: opening soon, as of the sponsor's last update on 8 May 2026. 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 Spain. 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. Some participants in this study may receive a placebo. 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?

This study is still under way. Results are not available in the source record yet.

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

Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Hepatic fat content (time frame: Change from baseline in the mean adipose tissue content at 12 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 8 May 2026.

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