Season 2, Episode 15: The Consortium Approach: Why Small Moves Can Matter More Than You Think, with Professor Ulf Ekelund
What if five minutes could change population health?
In this episode of The Emerging Scholar Podcast, we sit down with world-leading physical activity epidemiologist Professor Ulf Ekelund to explore a deceptively simple idea: small shifts in daily movement can have massive impact when scaled across entire populations.
From early studies with just eight adolescent athletes to global analyses involving hundreds of thousands of participants, Ekelund’s career has helped redefine how we measure physical activity—and how we think about its role in preventing disease. His work sits at the centre of a major shift in public health thinking: moving beyond all-or-nothing thresholds toward understanding the power of incremental change.
At the heart of the conversation is a foundational question in epidemiology: is it more effective to focus on those at highest risk, or to shift the entire population just a little? Through decades of research—and his latest work on dose-response relationships and mortality—Ekelund shows how even modest increases in daily activity can translate into meaningful reductions in risk.
We also explore the evolution of accelerometry, the realities of building international research consortia, and the promise—and limitations—of wearable technology and AI in understanding human movement.
For emerging scholars, this episode is a masterclass in scale and impact: how rigorous, methodical research grows from small studies into work that shapes global health guidelines—and why sometimes, the most powerful interventions are also the simplest.
More insight into this great interview, and the foundational work underlying it can be found in this post on our Substack!
Papers & Resources That We Touched On In This Episode:
The Founding Framework
The 2026 Lancet Paper - Our Episode's Main Focus
The Global Physical Activity Policy Context and Call to Integrate with Climate Change Mitigation Strategies
Professor Ekelund's Earlier Foundational Work
- Field Evaluation of the Computer Science and Application's Inc. Activity Monitor during Running and Skating Training in Adolescent Athletes
- Does physical activity attenuate, or even eliminate, the detrimental association of sitting time with mortality? A harmonised meta-analysis of data from more than 1 million men and women
- Dose-response associations between accelerometry measured physical activity and sedentary time and all cause mortality: systematic review and harmonised meta-analysis
Canadian Pediatric Healthy Hearts Cohort — McGavock / Torrance Physical Activity and Cardio-metabolic Health in Children and Adolescents
- Physical Activity Intensity and Cardiometabolic Risk in Youth
- Vigorous physical activity and longitudinal associations with cardiometabolic risk factors in youth
- Patterns of weekday and weekend physical activity in youth in 2 Canadian provinces
- Outdoor Time Is Associated with Physical Activity, Sedentary Time, and Cardiorespiratory Fitness in Youth
Canadian Population Data
Norwegian Population Data
- Physical Inactivity in Adults — Norwegian Institute of Public Health indicator page - accelerometer data showing approximately 25% of Norwegian adults do not meet physical activity guidelines.
- Device-measured physical activity and sedentary time in the Nordic countries: A scoping review of population-based studies
Guests
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Professor Ulf Ekelund
Professor Ulf Ekelund is one of the world’s leading voices in physical activity and public health, whose research has fundamentally reshaped how we understand the relationship between movement, sedentary behaviour, and chronic disease. He is Professor at the Norwegian School of Sport Sciences and Senior Researcher at the Norwegian Institute of Public Health, with a career spanning global collaborations that have influenced both science and policy at the highest levels.
From co-developing the International Physical Activity Questionnaire (IPAQ) to leading landmark studies like the European Youth Heart Study and the International Children’s Accelerometer Database (ICAD), Professor Ekelund’s work has set the standard for how physical activity is measured and understood worldwide. His research has directly informed major global health initiatives, including The Lancet physical activity series and World Health Organization guidelines, helping shape how nations approach prevention of chronic disease.
With more than 470 publications, over 40,000 citations, and recognition as a Highly Cited Researcher multiple times, his impact is undeniable. But beyond the metrics, Professor Ekelund is driven by a clear mission: to translate rigorous science into meaningful, population-level change. And true to his work, he doesn’t just study physical activity—he lives it, as an avid cross-country skier in the Norwegian outdoors.