A study of 8 British schools found that moderate to vigorous physical activity levels were 32% higher for children on playgrounds with brightly colored markings as compared to activity levels of children on playgrounds that had no markings.
Stratton, Gareth, and Elaine Mullan. “The Effect of Multicolor Playground Markings on Children’s Physical Activity Level during Recess.” Preventive Medicine 41, no. 5-6 (2005): 828-33. https://doi.org/10.1016/j.ypmed.2005.07.009.
