As the prevalence of childhood obesity increases, exercise testing of obese
children is likely to increase as well. This article discusses the implica
tions of pediatric obesity for exercise testing and provides some recommend
ations for conducting tests and evaluating results. Studies comparing obese
and nonobese children during exercise testing indicate that obese children
are capable of meeting the challenges of exercise testing to nearly the sa
me extent as their nonobese peers. Their physiologic responses, at least fo
r the levels of obesity reported in the literature, are not sufficiently di
fferent from their nonobese counterparts to necessitate major changes in te
st protocols. Laboratory staff should gay special attention to fostering co
nfidence in the obese child during the pretest routine.