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Oka Lab
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The lab studies ways to reduce prolonged sitting and build habits of physical activity.
AboutAbout the lab
Less sitting, more moving in daily life.
The Oka Lab studies methods of supporting lifestyle improvement for people of all ages, from children to older adults.
It focuses in particular on building habits of physical activity and on measures to reduce prolonged sitting.
The lab explores ways to promote behavior change through both psychological approaches and improvements to the surrounding environment.
It aims to return its research results to society in the form of community building, people development, and product development.
Key terms
- Physical activity
- Any movement that uses energy, including not only exercise but also housework and getting around
- Sedentary behavior
- Spending time sitting or lying down while using almost no energy
- Behavior change
- Changing daily habits in a healthier direction, as well as the interventions that help people do so
NewsLab news
Prof. Oka's research group conducted an ethical evaluation of the advice that large language models give on building healthy cities
Prof. Oka's research group estimated the economic burden of chronic diseases caused by prolonged sitting
Prof. Oka's research group reported in PLOS One on the relationship between workers' 24-hour behavior and low back pain and shoulder stiffness
Prof. Oka's research group reported in Health Psychology on the association between a high level of well-being and a lower risk of death
A joint study with Japan Advanced Institute of Science and Technology reported a new approach to building communities that support health
ResearchResearch themes
The lab studies how to change behavior in more desirable directions through both psychological approaches and improvements to the surrounding environment. It explores effective approaches from both basic and applied perspectives, and links them to practice in society.
*Illustrative imageChildren and Adolescents
The lab investigates the actual state of physical inactivity and prolonged sitting among elementary and junior high school students, and the factors behind it. It also explores ways to promote light physical activity and create an active way of living.
*Illustrative imageAthletes
The lab aims to establish methods of psychological conditioning to improve athletic performance. It also covers psychological support for athletes dealing with injury or mental health problems, as well as support for improving sleep and diet.
*Illustrative imageWorking Adults
The lab examines how physical inactivity and prolonged sitting affect the health and work of working adults, and considers ways to address them. It also works on creating office environments in which people become healthier and more energized the more they work.
*Illustrative imageOlder Adults
The lab examines how prolonged sitting affects the health of older adults and how to address it. It also covers the development of exercise programs that help prevent the need for long-term care, and health promotion through dog walking.
MembersFaculty
The members of the Oka Lab consist of faculty, visiting researchers, students in the doctoral and master's programs (the two-year program and the one-year program for working professionals), and undergraduate students in the lab seminar.As of 2026
- ProfessorKoichiro Oka
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Residential area in Yamatocho, Nakano, Tokyo” Mikagekawase / CC BY 4.0 (cropped)
- Children and Adolescents: “Playground in Freiham 03” Kritzolina / CC BY-SA 4.0 (cropped)
- Athletes: “Running track near Japan National Stadium 2” Syced / CC0 (cropped)
- Working Adults: “C4DI interior coworking space 2025” Influence Media / CC BY 4.0 (cropped)
- Older Adults: “Long Haired Australian Cattle Dog” MarkBuckawicki / CC0 (cropped)
- Related lab (石井研究室): “Akeno-kita Elementary School, South Building” Watofamily / CC BY-SA 4.0 (cropped)
- Related lab
(宮地研究室): “Footprints on the snow road - 1” KKPCW / CC BY-SA 4.0 (cropped) - Related lab (正木研究室): “MRI brain sagittal section” everyone's idle / CC BY-SA 2.0 (cropped)
- Related lab (中村研究室): “Mortlake, Footpath and trees, Palewell Park - geograph.org.uk - 3427351” Dr Neil Clifton / CC BY-SA 2.0 (cropped)
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