How muscles change structure to grow after loading
Identifying the Structural Adaptations that Drive the Mechanically Induced Growth of Skeletal Muscle
Researchers are looking at how mechanical forces like exercise or resistance change muscle structure to help people who are losing muscle from aging, bed rest, or illness.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Wisconsin-Madison NIH-funded |
| Lab location | 1 site (Madison, United States) |
| Project ID | NIH-11367928 on NIH RePORTER |
What this research studies
The team will examine muscle tissue at very small scales using advanced imaging and laboratory methods to track where newly made proteins go when muscle is loaded. They plan to determine whether muscles grow by making existing contractile units bigger or by adding more of them and to identify the exact spots where growth happens. Much of the work is lab-based and may use animal models, cell samples, or human muscle tissue to study these tiny structural changes. The goal is to turn those basic findings into clearer strategies to prevent or reverse muscle loss in older adults or people with wasting conditions.
Who could benefit from this research
Good fit: People with age-related muscle weakness, prolonged immobilization (for example after bed rest), or muscle-wasting conditions such as cachexia would be most relevant to this research.
Not a fit: Healthy people without muscle loss or those seeking immediate clinical treatments are unlikely to receive direct benefits from this primarily laboratory-focused research.
Why it matters
Potential benefit: If successful, this work could lead to better rehabilitation approaches or therapies to prevent or reverse muscle loss from aging, illness, or prolonged inactivity.
How similar studies have performed: Prior studies show that mechanical loading increases muscle size, but the precise ultrastructural changes and exact sites of new protein incorporation targeted here remain largely unproven.
Where this research is happening
Madison, United States
- University of Wisconsin-Madison — Madison, United States (Active)
Researchers
- Principal investigator: Hornberger, Troy a — University of Wisconsin-Madison
- Study coordinator: Hornberger, Troy a
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.