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IMAT Quality in Aging
Sponsor: Washington University School of Medicine
Summary
This study will test the central hypothesis that fat within the muscle, or intramuscular adipose tissue (IMAT), exhibits elevated damage and pro-inflammatory signaling with aging, both of which are reduced by progressive resistance exercise (PRE). Sixteen older adults 65-80 years old will be recruited and complete a 12 week calf PRE intervention. Calf muscle strength, composition (measured by computed tomography) and muscle biopsies will be collected before and after the intervention. Histology, transcriptomic and secretomic tests will be completed to assess signs of damage and inflammation.
Official title: Targeting Intramuscular Adipose Quality in Aging
Key Details
Gender
All
Age Range
65 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
16
Start Date
2026-04-15
Completion Date
2028-01
Last Updated
2026-04-02
Healthy Volunteers
Yes
Conditions
Interventions
Calf muscle strengthening
The calf intervention will be delivered 3x/wk for 12 weeks over zoom, in small groups. There are 3 exercises 1) standing heel rise, 2) seated heel rise, and 3) long sitting ankle plantarflexion. The exercises will be overloaded using a weighted vest, body weight, and/or theraband. Exercises will be progressed as strength improves.
Locations (1)
Washington University
St Louis, Missouri, United States