I would definitely dig in and start compiling a list of all publications that you could potentially write for or advertise in
You mentioned two search terms (keyword phrases) that you rank well for:
kids fitness &
health and fitness for kids. Do you use to determine which keywords or search terms that you want to optimize for or bid on through Adwords? Using the free trial, these are the approximate # of daily searches:
kids fitness 57
health and fitness for kids 4
Also:
fitness for kids 35
physical fitness testing for kids 15
kids fitness equipment 13
kids start fitness equipment 11
kids and fitness 10
fitness for children 38
exercise for kids 53
kids exercise 38
exercise for children 49
children and exercise 45
Also, while I was browsing your site (which is very nice, btw!), I noticed that this page couldnt be found:
http://www.fitnessandkids.com/products_kids.html