The Physical Activity and Redesigned Community Spaces (PARCS) Study: Protocol of a natural experiment to investigate the impact of citywide park redesign and renovation

[1] Kaczynski AT(2008)Parks and recreation settings and active living: A review of associations with physical activity function and intensity J Phys Act Health 5 619-632

[2] Henderson KA(2015)Association of proximity and density of parks and objectively measured physical activity in the United States: A systematic review Soc Sci Med 138 22-30

[3] Bancroft C(2012)The relationship between built environments and physical activity: A systematic review Am J Public Health 102 e7-e13

[4] Joshi S(2012)Park improvements and park activity: A natural experiment Am J Prev Med 42 616-619

[5] Rundle A(2013)Does playground improvement increase physical activity among children? A quasi-experimental study of a natural experiment J Environ Public Health 2013 109841-320

[6] Ferdinand A(2009)Making the playfields even: evaluating the impact of an environmental intervention on park use and physical activity Prev Med 48 316-45

[7] Sen B(2012)Impact and cost-effectiveness of family Fitness Zones: a natural experiment in urban public parks Health Place 18 39-299

[8] Rahurkar S(2015)The park a tree built': Evaluating how a park development project impacted where people play Urban For Urban Green 14 293-3400

[9] Engler S(2000)Coffee consumption and the risk of coronary heart disease Arch Intern Med 160 3393-388

[10] Menachemi N(2010)Negative controls: a tool for detecting confounding and bias in observational studies Epidemiology 21 383-1987

[1] Kaczynski AT(2008)Parks and recreation settings and active living: A review of associations with physical activity function and intensity J Phys Act Health 5 619-632

[2] Henderson KA(2015)Association of proximity and density of parks and objectively measured physical activity in the United States: A systematic review Soc Sci Med 138 22-30

[3] Bancroft C(2012)The relationship between built environments and physical activity: A systematic review Am J Public Health 102 e7-e13

[4] Joshi S(2012)Park improvements and park activity: A natural experiment Am J Prev Med 42 616-619

[5] Rundle A(2013)Does playground improvement increase physical activity among children? A quasi-experimental study of a natural experiment J Environ Public Health 2013 109841-320

[6] Ferdinand A(2009)Making the playfields even: evaluating the impact of an environmental intervention on park use and physical activity Prev Med 48 316-45

[7] Sen B(2012)Impact and cost-effectiveness of family Fitness Zones: a natural experiment in urban public parks Health Place 18 39-299

[8] Rahurkar S(2015)The park a tree built': Evaluating how a park development project impacted where people play Urban For Urban Green 14 293-3400

[9] Engler S(2000)Coffee consumption and the risk of coronary heart disease Arch Intern Med 160 3393-388

[10] Menachemi N(2010)Negative controls: a tool for detecting confounding and bias in observational studies Epidemiology 21 383-1987