Final answer:
Compressions are performed on adults, children, and infants based on their respective age groups.
Step-by-step explanation:
In the context of compressions, the term 'puberty' refers to individuals who are post-puberty, meaning they have reached or surpassed the age of puberty. For children, compressions are performed on those who are between the ages of 1 and puberty, and for infants, compressions are performed on those who are younger than 1 year old. These age groups are used to determine the appropriate technique and force required for performing compressions during CPR.