TABLE 2.

Children’s actions observed in play were coded into these 10 categories.

Code	Definition
Locomotion	Transition between two places (e.g., walk, run, skip, and step across tires)
Climbing	Vertical climbing up and down (e.g., climbing up or down on the tower, climbing up on the top of the woodslope handrails, or jumping down from the top of woodstep handrail)
Manipulation	Using detached objects (e.g., balls and hula hoop)
Sedentary	Quiet, small amount of physical movement (e.g., chatting with others, doing nothing, sitting, or looking down or sitting on the tower)
Cycling	Play with any kind of vehicle (e.g., tricycle, bicycle, kickboard, and buggy)
Sloping	Play with any kind of slope (e.g., running up the slide, cycling down from the top of the mound, and sliding down the slide)
Sand play	Using sand (including touching sand or drawing something on the ground)
Water play	Using water (including carrying water with buckets or using a watering can)
Sporting	Sporting games that include commonly understood rules and were freely chosen by children
Horseplay	Playful physical contact or fawn (e.g., pretend-hero play and playful pushing)