Bone mineral density changes after physical training and calcium intake in students with attention deficit and hyper activity disorders

► Determining effect of physical training on BMD in students with attention deficit and hyper activity (ADHD). ► Determining effect of Ca supplements on BMD in students with ADHD. ► Determining effect of physical training-Ca supplements on BMD in students with ADHD. ► Comparing effect of physical training, Ca supplements, and physical training-Ca supplements on BMD in students with ADHD.