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Nearly 25 years ago, Jeremy Morris ( 1994 ) declared physical activity to be the “best buy in public health.” Morris, the epidemiologist credited with publishing the first modern scientific evidence of the cardiovascular health benefits of physical activity ( Morris, Heady, Raffle, Roberts, & Parks

Physical inactivity is a recognized independent risk factor for mortality and chronic morbidity in adults ( Physical Activity Guidelines Advisory Committee, 2018 ). Specific to the U.S. context, physical inactivity is estimated on average to cause 11% of premature mortality and 7% of disease burden

The importance of physical activity to the growth and development of children and adolescents is clear ( 2018 Physical Activity Guidelines Advisory Committee ), and schools have been identified as key venues to increase physical activity in both global ( World Health Organization, 2018 ) and U

Ambulation (stepping) is an essential component of many activities of daily living (e.g., household chores, active transport), with walking being the most commonly reported physical activity choice across the globe ( Hulteen et al., 2017 ). As such, step counting has become a standard measurement

Wearable activity trackers, devices that measure physical activity under free-living conditions, are part of a rapidly growing trend in medicine. In 2016, Fitbit Inc. was reported to have a 79% market share in wearable activity trackers ( The NPD Group, 2016 ) and shipped 22.5 million units

The Committee on Sports Medicine and Fitness (COSMF) and the Committee on School Health (COSH; 2000 ) suggested that physical education classes play an important role in introducing and promoting physical activity to youth and adolescents. This introduction may be the first time that students are

Defined as any bodily movement generated by skeletal muscles that produces energy expenditure ( Caspersen, Powell, & Christenson, 1985 ), physical activity is inherently constrained to the individual mover. Yet, physical activity is a behavior that is socially and culturally embedded. Full

This paper is based on a Senior Lecture presented at the 2019 North American Society for the Psychology of Sport and Physical Activity (NASPSPA) conference. Given that I was invited as a senior lecturer, rather than presenting a neat, clear line of research, I am offering a senior perspective on

introduced the comprehensive school physical activity program (CSPAP) model. A CSPAP was conceptualized as an approach to leveraging the full range of resources needed to meet two broad goals: to achieve the educational (i.e., academic standards-aligned) outcomes espoused for physical education and to