A Study of Adipose Tissue in Adaptive Responses to Exercise

NCT ID: NCT06053125

Last Updated: 2025-10-23

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

56 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-11-09

Study Completion Date

2026-10-31

Brief Summary

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The purpose of this research is to determine how exercise affects fat (adipose) tissue and how changes to adipose tissue that occur during and after exercise might improve health in aging and obesity.

Detailed Description

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Adipose tissue has important endocrine functions that influence metabolic health. Early evidence shows that adipose adapts to physiological stress, including exercise. The objective here is to determine how exercise-induced alterations in adipose tissue cellular composition and endocrine signaling may contribute to the beneficial adaptations to exercise in aging and obesity.

Immune cell populations and inflammatory signatures will be assessed in subcutaneous abdominal adipose tissue biopsies collected from obese and normal weight young and older adults before, immediately after, and 3 hours after a 30-min bout of cycling exercise at 70% of maximal oxygen consumption (VO2max). Mass spectrometry, Olink targeted inflammation assays, and RNA sequencing will be used for full proteomic and transcriptomic characterization of the adipose tissue secretome (the proteins and molecules secreted from the adipose tissue) and the cargo of extracellular vesicles isolated from plasma and media collected from cultured human adipose tissue explants generated from each time point.

Overall, the primary hypothesis of the proposed work is that a single bout of exercise triggers transient changes in adipose tissue paracrine/endocrine signals and immune cellular composition. The investigators propose that these responses contribute to the beneficial effects of exercise locally and in distal tissues and that the cumulative effects of acute changes in adipose tissue likely contribute to the positive alterations in adipose tissue associated with exercise training.

Conditions

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Healthy Obesity

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Older adults with obesity

Participants with obesity as determined by the principal investigator and aged 65-85 years will have an adipose tissue biopsy taken from the abdomen before and after exercise.

Group Type EXPERIMENTAL

Adipose Tissue Biopsy

Intervention Type PROCEDURE

Fat sample collected from abdomen before exercise, immediately after exercise, and 3 hours after exercise

Exercise

Intervention Type BEHAVIORAL

30 minutes of exercise on a cycle ergometer exercise machine

Older adults without obesity

Participants with obesity as determined by the principal investigator and aged 65-85 years will have an adipose tissue biopsy taken from the abdomen before and after exercise.

Group Type EXPERIMENTAL

Adipose Tissue Biopsy

Intervention Type PROCEDURE

Fat sample collected from abdomen before exercise, immediately after exercise, and 3 hours after exercise

Exercise

Intervention Type BEHAVIORAL

30 minutes of exercise on a cycle ergometer exercise machine

Young adults with obesity

Participants with obesity as determined by the principal investigator and aged 18-35 years will have an adipose tissue biopsy taken from the abdomen before and after exercise.

Group Type EXPERIMENTAL

Adipose Tissue Biopsy

Intervention Type PROCEDURE

Fat sample collected from abdomen before exercise, immediately after exercise, and 3 hours after exercise

Exercise

Intervention Type BEHAVIORAL

30 minutes of exercise on a cycle ergometer exercise machine

Young adults without obesity

Participants with obesity as determined by the principal investigator and aged 18-35 years will have an adipose tissue biopsy taken from the abdomen before and after exercise.

Group Type EXPERIMENTAL

Adipose Tissue Biopsy

Intervention Type PROCEDURE

Fat sample collected from abdomen before exercise, immediately after exercise, and 3 hours after exercise

Exercise

Intervention Type BEHAVIORAL

30 minutes of exercise on a cycle ergometer exercise machine

Interventions

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Adipose Tissue Biopsy

Fat sample collected from abdomen before exercise, immediately after exercise, and 3 hours after exercise

Intervention Type PROCEDURE

Exercise

30 minutes of exercise on a cycle ergometer exercise machine

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Adults between the ages of 18-35 OR 65-85.
* BMI 18.5 kg/m2 - 40 kg/m2
* Weight stable (≥ 3 months)
* Generally healthy

Exclusion Criteria

* Participation in ≥ 30 minutes of structured physical activity ≥ 2 days per week.
* Smoking/tobacco use.
* Alcohol/substance abuse.
* Pregnancy and breastfeeding.
* Anemia.
* Abnormal renal function.
* Blood clotting disorders.
* Coronary artery disease.
* Uncontrolled thyroid disease.
* Liver disease.
* Use of medications known to influence the main outcomes of the study.
* Orthopedic problems that may be aggravated by exercise.
* Chronic disease at the discretion of the investigators.
Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role collaborator

Mayo Clinic

OTHER

Sponsor Role lead

Responsible Party

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Hawley E. Kunz

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Hawley Kunz, PhD

Role: PRINCIPAL_INVESTIGATOR

Mayo Clinic

Locations

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Mayo Clinic

Rochester, Minnesota, United States

Site Status

Countries

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United States

Related Links

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Other Identifiers

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K01DK134765

Identifier Type: NIH

Identifier Source: secondary_id

View Link

23-002049

Identifier Type: -

Identifier Source: org_study_id

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