Recent research in Abnormal Child Psychology reports on a study of 12 boys with ADHD were compared to 11 typically developing boys. All of the boys ages 8-12 years old wore actigraphs on their wrists and ankles during working memory tasks. The research indicated that all children moved more during working memory tasks but the boys with ADHD moved significantly more that the typically developing children. The researchers concluded that excessive movement in boys with ADHD may have a functional purpose during working memory tasks.
This is some great research to support sensory diet activities in the classroom. You can explain to teachers that movement may help the children to accomplish working memory tasks. Here is where theraband around desk chairs, swinging foot rests, balls, and other movement ideas can be helpful additions to the classroom. Reinforce the idea with teachers that by forcing any child to sit perfectly still during certain tasks may actually inhibit working memory.
On 4/9/09 Time Magazine printed an article about the previously mentioned study entitled Kids With ADHD May Learn Better By Fidgeting. Worth a read if interested in this topic.
Reference: Rapport, M, Bolden, J, Kofler, M et al (2008) Hyperactivity in Boys with Attenteion-Deficit/Hyperactivity Disorder (ADHD): A Ubiquitous Core Symptom or Manefestation of Working Memory Deficits? J Abnorm Child Psychol DOI 10.1007/s10802-008-9287-8