After approval by the Institutional Review Board of the Centro Universitário Central Paulista (No 31/2011), all full-time day care centers of a city in the interior of São Paulo who served children aged two years were invited to participate. Among the 13 public day care centers, three were excluded due to lack of space for motor performance evaluation. Among the 28 private day care centers invited, only nine agreed to participate. There is no way of knowing whether there are significant differences between the evaluated day care centers and the ones who refused to participate, as the researchers were prevented from entering the non-participating centers. In the participating day care centers, all children aged two years were invited and evaluated all children whose parents or guardians gave WIC.