Abstract: Objective To provide the basical principles of exercise prescription for undergraduates to do physical activities which aregood for spinal. Methods Investigation and case comparison were used to measure the sagittal curvature and mobility of thoracic and lumbarspine and physical activity level of 583 undergraduates in some colleges by Spinalmouse and CPAQ questionnaire. Groups of differentactivity level were compared on the base of normal range. Results In the curvature testing, the positive rate of groups with high physical activitywere significantly lower than that with middle physical activity in T1~S₁ (P<0.05), except 2 female groups with no significant differencein T₁₂~S₁ (P>0.05). In the mobility testing, the positive rate of groups with high physical activity were significantly higher than thatwith middle physical activity in T₁₂~S₁ (P<0.05). Conclusion High physical activity level is good for keeping the sagittal spinal curvature inthe normal range, and can help to prevent posture abnormity and spinal malformation.

Key words: spine, curvature, mobility, physical activity