Studies addressing children's perceptions of exercise effort have appe
ared steadily in the scientific literature over the last 20 years, tho
ugh they have been relatively sparse in number. With little or no rega
rd for their suitability, researchers initially applied to children th
e methods and applications of the rating of perceived exertion (RPE) n
otion established amongst adults. Whilst some success was claimed, fin
dings were inconclusive, possibly because of the use of an inappropria
te measurement scale. More recently, the development of the child-spec
ific Children's Effort Rating Table (CERT) has advanced research in th
is domain and helped to focus attention on the numerous problems of ap
plying this psychophysical concept to such immature subjects. Accordin
gly, the scope for further research in this discipline is now far broa
der than ever before.