李金坤，鲁长芬，龚禄棒，朱玉萍，罗小兵
(华中师范大学 体育学院，湖北 武汉 430079)
摘 要：探讨初中生身体活动与脊柱侧弯的关系并提出相关建议。采用ActiGraph wGT3X-BT型三轴加速度传感器和躯干旋转测量仪测量初中生活动行为和脊柱侧弯数据，采用成分等时替代和校内或校外身体活动模式分析，从身体活动强度、活动剂量和活动场域层面探讨身体活动对初中生脊柱侧弯的影响。结果显示：久坐(sedentary behaviour, SB)时间占比能够正向预测初中的脊柱侧弯程度，中高强度身体活动(moderate-to-vigorous physical activity，MVPA)等时替代低强度身体活动(light physical activity, LPA)、SB和睡眠(sleep, SP)后脊柱侧弯角度均显著降低，而LPA、SB和SP等时替代MVPA后脊柱侧弯角度均显著上升。MVPA等时替换LPA、SB、SP与LPA、SB、SP等时替换MVPA对脊柱侧弯影响的剂量-效应曲线呈现不对称趋势，即MVPA等时替代LPA、SB、SP时脊柱侧弯的下降幅度明显低于LPA、SB、SP等时替代MVPA时脊柱侧弯的上升幅度。相对于MVPA不活跃型的初中生，MVPA活跃型、MVPA校内活跃型和MVPA校外活跃型的初中生脊柱侧弯程度更低，而这3种类型初中生的脊柱侧弯程度不存在显著差异。预防初中生脊柱侧弯应增加MVPA时间，建立MVPA预警机制并建立促进校内或校外身体活动的协同机制。
关 键 词：脊柱侧弯；身体活动；成分等时替代；校内或校外模式；初中生
中图分类号：G807.2 文献标志码：A 文章编号：1006-7116(2026)02-0137-08
Promoting spinal health in junior high school students: Analysis based on the dimensions of physical activity intensity, dosage and field
LI Jinkun，LU Changfen，GONG Lubang，ZHU Yuping，LUO Xiaobing
(School of Physical Education and Sports，Central Normal China University，Wuhan 430079，China)
Abstract: To explore the relationship between physical activity and scoliosis in junior high school students, and also put forward relevant suggestions. ActiGraph wGT3X-BT accelerometer and the scoliometer were respectively used to measure activity behavior and scoliosis data for junior high school students, and the methods of compositional isotemporal substitution and analysis of in-school or out-of-school physical activity patterns were adopted to explore the relationship of physical activity on scoliosis from the aspects of physical activity intensity, activity dosage, and activity field. Results showed that the proportion of sedentary time could positively predict the degree of scoliosis among junior high school students. When moderate-to-vigorous physical activity (MVPA) is substituted for light physical activity (LPA), SB, and sleep (SP) for the same amount of time, it can significantly reduce the degree of scoliosis. Conversely, when LPA, SB, and SP are substituted for MVPA for the same amount of time, it can significantly increase the degree of scoliosis. The dose-response curves of the impact on scoliosis when MVPA replaces LPA, SB, and SP and when LPA, SB, and SP replace MVPA show an asymmetric trend. That is, when MVPA is substituted for LPA, SB, and SP for the same duration, the decrease in scoliosis is significantly lower than the increase in scoliosis, while LPA, SB, and SP are substituted for MVPA for the same duration. Compared with junior high school students who are inactive in MVPA, junior high school students who are active in MVPA, those who are active in MVPA outside school, and those who are active in MVPA in school have a lower degree of scoliosis, there is no significant difference in the degree of scoliosis among these three types of junior high school students. Conclusion and suggestions will be that to prevent scoliosis among junior high school students, the time of MVPA should be increased, an early warning mechanism for MVPA should be established, and a collaborative mechanism to promote physical activity inside and outside school should be also established.
Keywords: scoliosis；physical activity；compositional isotemporal substitution；inside and outside school patterns；junior high school students