Around the Clock Terminology Consortium Featured in the Healthier Sleep Magazine
March 10, 2026
The Around the Clock Terminology Consortium (ACT-C) was recently featured in the Healthier Sleep Magazine (a publication of World Sleep Society). This article written by Dr. Ryan Falck and colleagues shares why the ACT-C was formed, what it has accomplished so far, and next steps. Click here to read the full article.
Publication: The Around the Clock Terminology Consortium: A Global Consensus on Terminology to Discuss the 24-Hour Cycle of Physical Activity, Sedentary Behavior, and Sleep
October 15, 2025
The Journal of Physical Activity and Health recently published the article The Around the Clock Terminology Consortium: A Global Consensus on Terminology to Discuss the 24-Hour Cycle of Physical Activity, Sedentary Behavior, and Sleep. This article shares the Around the Clock Terminology Consortium’s values, their achivements so far, and next steps. Click here to read […]
International Society for Physical Activity and Health Blog
September 19, 2025
The International Society for Physical Activity and Health (ISPAH) shared a blog post explaining the Around the Clock Terminology Consortium’s goals, current progress, and next steps. Click here to read more.
The Around the Clock Consortium in the ISBNPA Research Projects Database
August 20, 2025
IRPD – The Around the Clock Terminology Consortium: A global consensus on terminology to discuss the 24-hour cycle of physical activity, sedentary behaviour, and sleep The Around the Clock Terminology Consortium (ACT-C) is in the International Society of Behavioral Nutrition and Physical Activity (ISBNPA) Research Projects Database. This post shares key details on the project […]
Delphi Study Ongoing
August 16, 2025
The Around the Clock Terminology Consortium is leading a Delphi study to help determine consistent terminology to describe the 24-hour cycle of physical activity, sedentary behaviour, and sleep. This research is conducted at the University of British Columbia (UBC BREB: H25-02045). The Delphi study will involve researchers, professionals, and stakeholders who work in the areas […]
Preventing the ‘24-hour Babel’: the need for a consensus on a consistent terminology scheme for physical activity, sedentary behaviour and sleep
July 30, 2025
Dr. Ryan Falck and colleagues share the need for clear, concise, and consistent use of terminology to desribe physical activity, sleep, and sedentary behaviour in the 24-hour cycle. This will assist in understanding the association of physical activity, sleep, and sedentary behaviour on health outcomes. Also, the authors discuss the need for a concensus processs […]