Furthermore, eligible participants were required to (a)
qualify as higher-fit or lower-fit children (see Aerobic fitness
assessment section); (b) report no adverse health conditions,physical incapacities, or neurological disorders; (c) report no
use of medications that influence central nervous system
function; (d) have a corrected visual acuity of 20/20 and no
color-blindness; and (e) sign an informed assent approved
by the University of Illinois at Urbana-Champaign. A legal
guardian also had to provide written informed consent in
accordance with the institutional review board of the University
of Illinois at Urbana-Champaign. Subjects were
compensated $10 per hour for study participation