TABLE 1.

The detailed features of the play equipment and area.

Area	Feature(s)
Sandbox	The ground area of the sandbox covered with sand was about 17 m2, framed with 10-cm-diameter logs. There was wooden kitchen-like play equipment about 130 cm tall.
Slide	The slide had no stairs; it was fixed on a mound with the top of the slide about 1 m off the ground.
Tires	There were tires with a variety of sizes.
Open	This was a spacious area around the woodstep before the alteration. This area was segmented by lines marked on the ground, and by a movable iron bar and the tower after the alteration. There was nothing in the area after the alteration.
Woodstep	This had three levels of steps, with each level being about 20-cm high. The handrail on the highest level was 130 cm off the ground.
Woodslope	This was about 70 cm high at the top of the slope, and the top of the wooden frame was about 180 cm off the ground.
Tower	The highest part of the tower was about 190 cm, but the highest part a child could climb to was about 150 cm. After the alteration, the tower was put in the center of playground because children could climb up and observe the other children playing from above.
Mound	A handmade mound about 40-cm tall.
Track	This was marked around the woodstep after the alteration. The arrows, which indicate the running direction, were marked on the ground.