Aerobic fitness assessment. The sports camp from
which subjects were recruited recommended children for
study participation who were estimated to fall into higherand
lower-fitness groups based on the camp’s physical fitness
tests. The guardians of the recommended children were
contacted to obtain additional information about each child’s
participation in organized athletics. Children said to participate
in organized athletics four or more days per week were
estimated as higher-fit participants, and children said to
participate in organized athletics 1 dIwkj1 or less were estimated
as lower-fit participants.