Yamaguchi Runa performs with the rope

Yamaguchi Runa, of Japan, performs with the rope during the Individual All-Around at the 30th Rhythmic Gymnastics world championships in Moscow

A chinese boy hangs from gymnastic rings while attending a gymnastics class

A chinese boy hangs from gymnastic rings while attending a gymnastics class for children aged between seven and ten at the Shichahai Sports School

Young gymnasts take part in a training session for four to seven-year-olds

Young gymnasts take part in a training session for four to seven-year-olds at the gymnastics hall of a sports school in Jiaxing

Young gymnasts in a class of 4-7-year-olds stretch themselves at sports school

Young gymnasts in a class of 4-7-year-olds stretch themselves at sports school