The results of percentages and statistical analyses indicated that younger students’ aged 13 year
old faced higher potential risk of musculoskeletal pain compared to older students aged 14 and
15 years old. The 13 year old students have higher risk level in which deeper investigations were
required to improve students’ working postures. The results of both methods showed that
younger students which generally have smaller body sizes have more difficulties while using the
workstation. In a study of designing classroom furniture, the authors indicated that younger
students have smaller body sizes as compared to older students. Therefore, furniture design
criteria should be provided for three age groups for secondary schools which are 10-11 years, 12-
13 years and 14 – 15 years old [12].