Are there any person trainers specifically for children to lose weight?

Yes: There are more and more weight loss program often run by health care facilities. They often consist of a nutritionist and an physical trainer. There are also camps for overweight children which are complete program for weight reduction. Diets do not work. Making healthy lifestyle choices is key.

Sports medicine: Before beginning a formal strength training program, a medical evaluation should be performed by a pediatrician. If indicated, a referral may be made to a sports medicine physician who is familiar with various strength training methods as well as risks and benefits in pre-adolescents and adolescents.