A modified BDC and a set of modified VAS were distributed at the beginning and end of the class. The students were instructed to mark on the BDC any areas of discomfort or pain and to rate the severity of the pain/discomfort in each specified area on separate VAS. The posture of each student at a computer was observed and assessed. RULA recording started approximately ten minutes after the class began to allow the students to settle. Each student was observed for a 10-minute period of time during the class. The most usual posture of the student during these 10 minutes was noted and was
scored using RULA. The results of the BDC and VAS were calculated and analysed.