Szczepan Olszewski

Szczepan. It looks harder than it sounds,
just say SHCHEH-pan ol-SHEF-skee

PhD CANDIDATE, UW-MADISON

I study how muscle ages

And how exercise can help us stay strong for longer

I'm Szczepan Olszewski. My research connects skeletal muscle biology, exercise physiology, and healthy aging.

I write The Reserve, a newsletter bringing muscle and aging research beyond the laboratory.

Szczepan Olszewski speaking at a podium marked Mayo Clinic

MY STORY

“Research matters to me not only for what we discover, but also for what people can learn from it.”

RESEARCH PATH

The same question, lab after lab

How does skeletal muscle change with age, and what can we do to preserve its function?

Today, I study how exercise and pharmacological interventions affect skeletal muscle, combining preclinical experiments with physiological testing in older adults.

2017 to 2023
Gdańsk, Poland

  • Medical University of Gdańsk (GUMed) BSc, Dietetics; thesis on exercise and brain health
  • University of Gdańsk MSc, Medical Biology; thesis on muscle hypertrophy and fibrosis

In Poland, I worked in the Division of Bioenergetics and Physiology of Exercise at GUMed, on both clinical and preclinical research.

Polish Minister of Education and Science Scholarship For significant academic achievements (2022/2023)

Where it started

2021 to 2022
Europe

  • European Space Agency Human Space Physiology Training Course
  • Marche Polytechnic University, Italy Erasmus+ molecular biology internship
  • Cologne Graduate School of Aging Research Aging research summer school

I wanted to understand how the body adapts under stress, from the acute extremes of demanding environments to the slow, chronic strain of aging.

Training that widened how I think about aging and human performance

2022 to 2023
Oklahoma City, OK

Oklahoma Medical Research Foundation Research Trainee, Aging and Metabolism Program

Studied muscle fibrosis, hypertrophy, disuse atrophy, and mTORC1 inhibition in aging.

Fulbright BioLAB Fellowship (2022/2023)

The year I decided muscle biology of aging was the question to follow

2023 to present
Madison, WI

University of Wisconsin-Madison PhD, Cellular and Molecular Biology

My dissertation tests how resistance exercise affects skeletal muscle during and after semaglutide treatment in mice. In the EVERLAST clinical trial of selective mTORC1 inhibition in older adults, I work on physical function testing.

Diana Jacobs Kalman/AFAR Graduate Student Award American Federation for Aging Research (2026)

Where I am now

Behind every project is one practical question: how do we stay strong enough to live the way we want, for decades to come?

WHY MUSCLE

Muscle is a reserve

Skeletal muscle does more than move us. It supports mobility, physical independence, and our ability to respond to the demands of everyday life.

With age, muscle strength and power can decline faster than muscle mass. Yet skeletal muscle remains responsive to exercise, even later in life.

100% 75% 50% 25% 30 40 50 60 70 80 AGE % YOU KEEP ~30% MASS ~50% STRENGTH ~70% POWER MASS Supports metabolism and reserve for illness STRENGTH Capacity to produce force: lift, carry, push POWER Ability to produce force quickly

Approximate trajectories from sarcopenia literature: Janssen (2000), Mitchell (2012), Reid & Fielding (2012).

FROM SCIENCE TO PRACTICE

Working Together

From aging biology to human performance

Consulting & Collaboration

Selected projects involving human performance, aging science, exercise interventions, scientific communication, and speaking.

Coaching

Evidence-informed exercise and lifestyle strategies tailored to individual goals, health, and performance.

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CONTACT

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Coaching and consulting

Science, writing and speaking

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