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Program Evaluation / Health Promotion / Research Design / Evaluation / Physical Activity / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities