The percentage among children that exercised vigorously 2-3 times per week and experienced pain weekly or more often was 26-34% and 24-30% among those that exercised vigorously daily.
Svipað hlutfall var meðal barna sem hreyfðu sig mikið 2-3 sinnum í viku og upplifðu verki vikulega eða oftar (26-34%) og hjá börnum sem hreyfðu sig á hverjum degi (24-30%).