A.,
My daugther is also 8 years old and 4 1/2 feet. At her 7 year well visit, she was exactly 4 feet and weighed 69 pounds. In the past year, she grew 6 inches and actually lost four pounds. Some of the things that helped were changing her diet, not to any extreme, and increasing the physical activites.
Joining the YMCA was a great decision. Now, every Sunday we go swimming as a family and I try to get the kids there during the week. She takes one class a session, usually gymnastics. She is now taking basketball which is great because she practices once a week and has a game once a week. They have Friday night activites for the kids which are free with the membership. They swim, play games and go on the moonbounce. Also, they have free exercise classes for the family. As far as paying for the activities, my mother would much rather pay for a session of basketball or gymnastics than buy her a toy for her birthday or Christmas. I have also convinced my mother-in-law that gift certificates to the Y are great gifts for the kids.
Also, I have started really considering what gifts my children receieve for Christmas and birthdays. I try to buy them toys and games that require physical acitivity. Last year, whenever anyone asked what to get them for their birthdays I asked for gift cards to Toy R Us. When I had enough, we went and bought a moonbounce for them. I actually set it up in my house on rainy and cold days. We also have a pull-up bar in the door way that has a swing and acrobat bar that attaches. The kids love it. For Christmas this year, my mother went in with me on tumbling mats, a balance beam and incline for the kids. I also keep a list of things that I want for them so that when relatives ask for suggestions, I can steer them in the direction of physical toys. Oh yes, the dance mat that plugs into the TV is a big thing that my kids are getting for Christmas too.
The other thing that has helped with all three of my kids was taking the TV out of the playroom. Now, if they want to watch TV they have to go in another room. I don't allow toys out of the playroom. This has limited the amount of TV viewing so much.
I hope this is helpful. I am sorry if it is too long, I write like I speak.
-Barbara