Aubert, SalomeBarnes, Joel D.Abi Nader, PatrickAdeniyi, Ade FataiAguilar Farias, NicolasAndrade Tenesaca, Dolores SusanaBrazo Sayavera, JavierCardon, Greet MariaGába, AlesGonzález, SilviaHerrera Cuenca, MarianellaHuang, Wendy YajunIbrahim, Izzeldin A.e.Jurimae, JaakKatapally, Tarun ReddyKatzmarzyk, Peter T.Khan , AzizuddinTremblay, Mark S.2019-01-222019-01-2220181543-3080, 1543-5474(e)http://dspace.ucuenca.edu.ec/handle/123456789/31826https://journals.humankinetics.com/doi/pdf/10.1123/jpah.2018-0472Background: Accumulating sufficient moderate to vigorous physical activity is recognized as a key determinant of physical, physiological, developmental, mental, cognitive, and social health among children and youth (aged 5–17 y). The Global Matrix 3.0ofReportCardgradesonphysicalactivitywasdevelopedtoachieveabetterunderstandingoftheglobalvariationinchildand youth physical activity and associated supports. Methods: Work groups from 49 countries followed harmonized procedures to develop their Report Cards by grading 10 common indicators using the best available data. The participating countries were divided into 3 categories using the United Nations’ human development index (HDI) classification (low or medium, high, and very high HDI). Results: A total of 490 grades, including 369 letter grades and 121 incomplete grades, were assigned by the 49 work groups. Overall, an average grade of “C−,”“D+,” and “C−” was obtained for the low and medium HDI countries, high HDI countries, and very high HDI countries, respectively. Conclusions: The present study provides rich new evidence showing that the situation regarding the physical activity of children and youth is a concern worldwide. Strategic public investments to implement effective interventions to increase physical activity opportunities are needed.Background: Accumulating sufficient moderate to vigorous physical activity is recognized as a key determinant of physical, physiological, developmental, mental, cognitive, and social health among children and youth (aged 5–17 y). The Global Matrix 3.0ofReportCardgradesonphysicalactivitywasdevelopedtoachieveabetterunderstandingoftheglobalvariationinchildand youth physical activity and associated supports. Methods: Work groups from 49 countries followed harmonized procedures to develop their Report Cards by grading 10 common indicators using the best available data. The participating countries were divided into 3 categories using the United Nations’ human development index (HDI) classification (low or medium, high, and very high HDI). Results: A total of 490 grades, including 369 letter grades and 121 incomplete grades, were assigned by the 49 work groups. Overall, an average grade of “C−,”“D+,” and “C−” was obtained for the low and medium HDI countries, high HDI countries, and very high HDI countries, respectively. Conclusions: The present study provides rich new evidence showing that the situation regarding the physical activity of children and youth is a concern worldwide. Strategic public investments to implement effective interventions to increase physical activity opportunities are needed.es-ESGlobal ComparisonSedentary BehaviorHealth PromotionSportARTÍCULO10.1123/jpah.2018-0472