Classroom postures of 8-12 year old children.

This study examined classroom postures of 8-12 year old school children in Flanders and related the outcomes to self-reported back or neck pain. Postural behaviours using the portable ergonomic observation (PEO) method and self-reported one-week back and neck pain were studied in 105 children from 41 different class groups. Pupils sat statically for 85% of the time, 28% of which the trunk was bent or flexed forward. For 9% of the time, children sat dynamically and for 36% they used a back rest. Children who spent more time sitting with a flexed trunk reported significantly more thoraco-lumbar pain compared to pain-free children and to children with cervical pain (p < 0.05). Children reporting pain stood for a longer period of time than pain-free children (p < 0.05). It is concluded that prolonged static kyphotic sitting without use of a backrest is common in elementary school children in Flanders.