Reference: https://doi.org/10.1542/peds.2017-1904
Boys:
https://link.springer.com/article/10.1007/s11906-017-0780-8/tables/3
Some images worth learning from are posted here (Note: Most of them are plagiarised. But, sources are referenced)
Basis of classification:These are based on peak static and dynamic components achieved during competition. Higher values may be reached during training.Dynamic component - estimated % of Max O2 and cardiac output.Static component - estimated Maximal voluntary contraction (MVC) reached/results in high BP.
*Danger of bodily collision† Increased risk if syncope occurs+ AAP classifies cricket in I-B