Table 2.

Contents of the “preexperiment questionnaire.”

Age	__ years old
Gender
Dominant hand	Right·Left
Longest participation in a sport	Preschool/elementary school/junior high school/high school/university/____
	Period: ___ year
	item:
Most recent sport	Period: ___ ___~___ ___ _____Years
	item:
Frequency of regular exercise	Never·less than once a week·2–4 times a week·more than 5 times a week