Bob Mehew said:
... the phrase "attuned to the physical and mental capacities of the participants" could equally apply to adults.
mind. As they have progressed and grown, it feels at times that its my aging capabilities that are becoming the limiting factor! :-[
Whilst upper and lower ages have been mentioned up-thread, gender has not. Consider this extract from the opening passage from Jasper Fforde's novel "The last dragonslayer" where the protagonist, Jennifer Strange, sets the scene:
"I was driving, which might have been unusual anywhere but here in the Kingdom of Snodd, which was unique in the Ununited Kingdoms for having driving tests based on maturity, not age. Which explained why I'd had a driving licence since I was thirteen, while some blokes were still failing to make the grade at forty."
Try re-reading it with 'caving' substituted for 'driving'... :doubt: