Top personal trainer certifications?

[Joe12]

What are the top most respected personal trainer certifications out there?

I am looking for someone else, she is a lifetime fitness person, but already has a BA in another field. She would simply like to do training on the side.

 

[ryane87]

NASM, ACE, NSCA. Just a few. Google search. NASM is one of the best

 

[Joe12]

Thanks, I did a little more looking, and ACE seems to rise to the top frequently.