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Amy R. Barchek, Shelby E. Baez, Matthew C. Hoch and Johanna M. Hoch

Clinical Scenario According to the American College of Sports Medicine and the American Heart Association, it is recommended that adults aged 18–65 years should spend a minimum of 30 minutes per day for 5 days each week participating in moderate physical activity or 20 minutes per day for 2 days

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Kavita A. Gavand, Kelli L. Cain, Terry L. Conway, Brian E. Saelens, Lawrence D. Frank, Jacqueline Kerr, Karen Glanz and James F. Sallis

In adolescents, regular physical activity (PA) helps to improve body composition, cardiorespiratory and muscular fitness, metabolic health biomarkers, bone health, and mental health. 1 It is recommended that youth participate in moderate to vigorous physical activity (MVPA) for at least 60 minutes

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Dietrich Rothenbacher, Dhayana Dallmeier, Michael D. Denkinger, Bernhard O. Boehm, Wolfgang Koenig, Jochen Klenk and ActiFE Study Group

individuals are relatively stable throughout the day and independent of meals ( Winters et al., 2014 ). SHBG produced in hepatocytes and production is controlled by endocrine as well as metabolic factors. Physical activity (PA) is an important determinant of health. Strong evidence exists that physically

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Pilar Lavielle Sotomayor, Gerardo Huitron Bravo, Analí López Fernández and Juan Talavera Piña

Increased physical activity (PA) could reduce the frequency of chronic conditions such as cardiovascular disease, breast cancer, and colon cancer by up to 10% 1 ; it can also increase life expectancy 2 and lower health care cost. 3 Therefore, promoting PA in the general population should be a

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Lisa Price, Katrina Wyatt, Jenny Lloyd, Charles Abraham, Siobhan Creanor, Sarah Dean and Melvyn Hillsdon

Understanding the prevalence of physical activity (PA) in children is important to the design of population-level health promotion initiatives. 1 It is recommended that children achieve a minimum of 60 minutes of moderate to vigorous physical activity (MVPA) on each day of the week 2 , 3 to

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Levi Frehlich, Christine Friedenreich, Alberto Nettel-Aguirre, Jasper Schipperijn and Gavin R. McCormack

Evidence regarding the role of neighborhood built characteristics in supporting physical activity continues to accumulate ( Barnett et al., 2017 ; Wasfi, Steinmetz-Wood, & Kestens, 2017 ) and inform urban planning and policy ( Calise, Heeren, DeJong, Dumith, & Kohl, 2013 ; Kärmeniemi, Lankila

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Rebecca T. Marsh Naturkach and Donna L. Goodwin

reflection enable the identification of positive actions for improvement in future encounters. Undergraduate university instructors have historically used disability-related CSL to prepare adapted physical activity students for professional practice ( Connolly, 1994 ; DePauw, 2000 ; Hodge & Jansma, 1999

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Oleg Zaslavsky, Yan Su, Eileen Rillamas-Sun, Inthira Roopsawang and Andrea Z. LaCroix

is that fatigue is triggered by a physiological decline in an aerobic capacity (VO 2 ) that commonly occurs as a consequence of an age-related loss of skeletal muscle mass ( Avlund, 2010 ). Specifically, with aging, the oxygen cost of activity consumes a larger proportion of an individual’s maximum

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Roger J. Paxton, Jeri E. Forster, Matthew J. Miller, Kristine L. Gerron, Jennifer E. Stevens-Lapsley and Cory L. Christiansen

than 3 million per year projected by 2030 ( Kurtz et al., 2007 ). TKA reliably reduces pain and improves self-reported functional performance postoperatively ( Bruun-Olsen, Heiberg, Wahl, & Mengshoel, 2013 ), yet physical activity levels are not typically increased after TKA ( Brandes, Ringling, Winter

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Nancy W. Glynn, Alexa J. Meinhardt, Kelsea R. LaSorda, Jessica L. Graves, Theresa Gmelin, Allison M. Gerger, Paolo Caserotti and Robert M. Boudreau

Physical activity plays an important role in the prevention or delay of the disablement process caused by aging ( Pahor et al., 2014 ). Higher activity levels are inversely related to risk of disability and death ( Brach, Kriska, Glynn, & Newman, 2008 ; Manini et al., 2017 ; Mankowski et