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Chelsea L. Kracht, Elizabeth K. Webster and Amanda E. Staiano

the other behaviors. 7 As of recent, there are no multibehavior guidelines including screen time, PA, and sleep for the United States, though individual guidelines exist. 8 – 11 In 2017, the Canadian 24-Hour Movement Guidelines for Early Years were created to concurrently address all 3 behaviors

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Katrina L. Piercy, Frances Bevington, Alison Vaux-Bjerke, Sandra Williams Hilfiker, Sean Arayasirikul and Elizabeth Y. Barnett

The Physical Activity Guidelines for Americans (the guidelines) outlines recommendations for the amount and types of physical activity necessary for good health based on the current scientific evidence. It includes specific physical activity dosages for youth and adults and additional

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Catrine Tudor-Locke and Elroy J. Aguiar

coordinated effort from the U.S. government ( Physical Activity Guidelines Advisory Committee, 2018 ; Pate et al., 1995 ; U.S. Department of Health and Human Services, 2008 ), as well as several leading professional organizations ( American Heart Association, 1992 ; Colberg et al., 2016 ; Garber et

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Gina L. Trakman, Adrienne Forsyth, Kane Middleton, Russell Hoye, Sarah Jenner, Stephen Keenan and Regina Belski

recommendations and athletes’ NK. Studies on overall sports NK of Australian athletes ( Andrews & Itsiopoulos, 2016 ; Devlin & Belski, 2015 ; Devlin et al., 2017 ) utilized NK questionnaires that do not capture current sports nutrition guidelines. Moreover, the tools used to assess NK of AF athletes have not

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Iuliana Hartescu, Kevin Morgan and Clare D. Stevinson

A minimum level of activity likely to improve sleep outcomes among older people has not previously been explored. In a representative UK sample aged 65+ (n = 926), cross-sectional regressions controlling for appropriate confounders showed that walking at or above the internationally recommended threshold of ≥ 150 min per week was significantly associated with a lower likelihood of reporting insomnia symptoms (OR = 0.67, 95% CI = 0.45−0.91, p < .05). At a 4-year follow-up (n = 577), higher walking levels at baseline significantly predicted a lower likelihood of reporting sleep onset (OR = 0.64, 95% CI = 0.42−0.97, p < .05) or sleep maintenance (OR = 0.63, 95% CI = 0.41−0.95, p < .05) problems. These results are consistent with the conclusion that current physical activity guidelines can support sleep quality in older adults.

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Peter T. Katzmarzyk and Amanda E. Staiano

Physical activity guidelines for children and youth typically focus on increasing moderate to vigorous physical activity (MVPA) levels. The current guidelines are relatively harmonized across countries and call for at least 60 minutes of MVPA daily in school-aged children. 1 , 2 In recent years

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Lauren Handler, Emily M. Tennant, Guy Faulkner and Amy E. Latimer-Cheung

The Canadian 24-Hour Movement Guidelines for Children and Youth (aged 5–17 years) were published in June 2016 and consolidate the evidence-informed daily requirements for physical activity (light, moderate, and vigorous), sedentary behavior, and sleep into one comprehensive resource ( Tremblay et

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Shannon L. Michael, Edward Coffield, Sarah M. Lee and Janet E. Fulton


Federal guidelines state that youth should participate in a variety of physical activity (PA) they find enjoyable. Little is known, however, about how variety and enjoyment are associated with PA participation among adolescents.


Data came from the 2010 National Youth Physical Activity and Nutrition Survey, a nationally representative survey of adolescents. Path analysis was used to examine the association of a variety of self-reported PA, defined as the number of activities and activity types (ie, team sports/weightlifting, individual activities, and other competitive/recreational sports), on self-reported PA enjoyment and participation. The analysis also examined whether enjoyment mediates the association between a variety of PA and participation. Separate models were estimated for boys and girls.


Number of activities was associated with increased PA enjoyment and participation. For boys and girls, team sports/weightlifting was associated with increased participation, and individual activities were indirectly associated with increased participation through enjoyment. For boys, team sports/weightlifting was indirectly related with participation.


These findings suggest that participation in a variety of PA is associated with increased PA enjoyment and participation. Providing opportunities for adolescents to engage in a variety of activities might help them identify PA they enjoy and facilitate lifelong PA habits.

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Catherine Carty, Hidde P. van der Ploeg, Stuart J.H. Biddle, Fiona Bull, Juana Willumsen, Lindsay Lee, Kaloyan Kamenov and Karen Milton

, 15 Disability has been recognized by the World Health Organization (WHO) as a development priority. 12 The publication of the first WHO guidelines on physical activity and sedentary behavior for people living with disability 16 reflects the WHO’s commitment to inclusive actions, aligned with the

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Kenneth E. Powell and Steven N. Blair

experts, the 2018 Physical Activity Guidelines Advisory Committee, to review the expanding knowledge base about the relationship between physical activity and health and to prepare a report that could be used to update the 2008 Physical Activity Guidelines for Americans ( HHS, 2008 ). The 2018 Physical