ABSTRACT
In Scandinavia enormous efforts have been made to teach people to sit in 'right angled sitting postures' in schools, offices and factories, hoping this would reduce the great number of back pain sufferers. All preferred to have furniture 15-20 cm higher than the standard, provided the seat and the desk were sloping towards. The mentioned experiment was made on slightly modified Danish school furniture, which for the past 10 years has proved an effective means of reducing and preventing back pain. Two hundred and eighty four pupils answered, which represented virtually all those who had used the furniture for one year. The main complaint, that the furniture was too low, was probably because the pupils had grown considerably during the year. The photographs were taken with an automatic camera at 24-minute intervals during a four-hour examination. All pupils are sitting in postures very harmful to the back.
