Are these a bunch of racers? Maybe they are just spending too much time away from their spouses... I am not trying to flip, but the commitment it takes to be on a team/training can be devastating to a marriage, let alone being a parent.

You can't be a counselor for all of them. Listen, but in the end, maybe suggest they sit down and actually discuss their unhappiness with a) their spouse and b) a therapist
Not everyone (male or female) in this age range has a crisis; in fact research shows that most are quite happy. So there must be some common factor going on here.