Correlations between physical activity, sedentary behavior and physical posture disorders in primary school students
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摘要:
目的 探究小学生身体活动(physical activity, PA)、久坐行为(sedentary behavior, SB)与身体姿态健康的关系,为该群体异常身体姿态预防、矫正提供参考。 方法 2020年9—12月,采用多阶段分层整群随机抽样法,抽取北京市朝阳区4所学校206名小学生为研究对象,采用Body-Style身体姿态测试仪、ActiGraph GT3X+三轴加速度计客观测量身体姿态、PA,采用儿童休闲活动调查问卷调查SB。 结果 小学生异常身体姿态检出率为76.70%;PA与高低肩、X/O型腿、骨盆前倾、脊柱侧弯、综合测评具有正向线性相关(β值分别为0.17,0.21,0.19,0.24,0.19,P值均 < 0.05);SB与高低肩、X/O型腿、骨盆前倾、脊柱侧弯、综合测评具有负向线性相关(β值分别为-0.24,-0.22,-0.36,-0.24,-0.27,P值均 < 0.05)。对PA、SB联合分析,在高PA、低SB(OR=2.12,95%CI=1.46~3.37,P < 0.05)和低PA、高SB两个极端组合时,身体姿态测评合格率获得优势分别为最高和最低;高PA、高SB(OR=1.85, 95%CI=1.38~2.86)与低SB、低PA (OR=1.71, 95%CI=1.41~2.74)比较,身体姿态测评合格率获得优势更高。 结论 对于小学生身体姿态健康,PA是独立促进因素,SB是独立危险因素,二者联合具有抵消或协同的交互效应。 Abstract:Objective To explore correlations between physical activity (PA), sedentary behavior (SB) and physical posture disorders in primary school students, and to provide reference for the prevention and correction of adverse body posture in this group. Methods From September to December 2020, 206 children from 4 primary schools in Chaoyang District of Beijing were selected by multistage stratified cluster random sampling method. Body posture and PA were assessed using a body posture tester and a triaxial accelerometer. Children's Leisure Activity Questionnaire was used to investigate SB. Results The detection rate of abnormal body posture in primary school students was 76.70%. PA showed positive assocation with high and low shoulder, X/O leg, pelvis forward, spine curvature and comprehensive evaluation (β=0.17, 0.21, 0.19, 0.24, 0.19, P < 0.05). SB had significant negative linear correlation with high and low shoulder, X/O leg, pelvis forward, spine curvature and comprehensive evaluation (β=-0.24, -0.22, -0.36, -0.24, -0.27, P < 0.05). In the combination analysis, children with high PA plus low SB (OR=2.12, 95%CI=1.46-3.37, P < 0.05) and children with low PA plus high SB had the highest and lowest advantages of qualified rate of body posture assessment, respectively. Compare with low SB and low PA(OR=1.71, 95%CI=1.41-2.74, P < 0.05), high PA and high SB (OR=1.85, 95%CI=1.38-2.86, P < 0.05) had higher qualified rate of body posture assessment. Conclusion Physical activity shows positive effects on physical posture while sedentary behavior shows negative effects on physical posture. The combination of PA and SB has a counteracting or synergistic interaction effect. -
Key words:
- Motor activity /
- Behavior /
- Somatotypes /
- Growth and development /
- Regression analysis /
- Students
1) 利益冲突声明 所有作者声明无利益冲突。 -
表 1 不同组别小学生不良身体姿态检出率比较
Table 1. Comparison of the detection rate of bad body posture among pupils of different groups
组别 选项 人数 检出人数 χ2值 P值 性别 男 111 81(72.97) 9.17 0.02 女 95 77(81.05) 年龄/岁 7~8 72 53 (73.61) 12.68 0.02 9~10 69 53(76.81) 11~12 65 52(80.00) BMI 正常 63 46(73.01) 6.45 < 0.01 超重 107 82(76.64) 肥胖 36 30(83.33) 注: ()内数字为检出率/%。 表 2 不同类型体力活动与久坐行为小学生身体姿态测评指标得分(x±s)
Table 2. Body posture evaluation index scores of students with different types of physical activity and sedentary behavior(x±s)
组别 选项 人数 高低肩 骨盆侧倾 X/O型腿 颈椎前倾 骨盆前倾 脊柱侧弯 肩胛骨倾斜 综合测评 体力活动 LPA 84 3.26±0.14 3.06±0.62 2.36±0.68 3.36±0.12 2.64±0.44 2.82±0.31 2.87±0.12 20.68±2.67 MPA 63 3.29±0.41 3.11±0.41 2.86±0.18 3.40±0.26 2.85±0.17 3.02±0.47 3.02±0.27 21.71±1.67 HPA 59 3.61±0.30 3.16±0.25 3.06±0.43 3.47±0.28 3.16±0.44 3.24±0.14 3.18±0.19 22.88±2.90 久坐行为 LSB 83 3.36±0.14 3.28±0.62 2.66±0.51 3.46±0.12 2.94±0.44 3.32±0.21 3.28±0.13 22.30±2.57 HSB 123 3.02±0.14 2.86±0.62 2.14±0.33 3.17±0.41 2.54±0.27 2.83±0.38 3.15±0.20 19.71±2.10 表 3 小学生PA、SB与身体姿态测评指标的相关性分析(β值,n=206)
Table 3. Correlation analysis between PA, SB and body posture evaluation indexes (β, n=206)
因变量 选项 高低肩 骨盆侧倾 X/O型腿 颈椎前倾 骨盆前倾 脊柱侧弯 肩胛骨倾斜 综合测评 体力活动 模式1 0.17* 0.03 0.21* 0.04 0.19* 0.24* 0.05 0.19* 模式2 0.20* 0.04 0.23 0.03 0.21* 0.27* 0.07 0.15* 久坐行为 模式1 -0.24** -0.17 -0.22* -0.02 -0.36** -0.24* 0.03 -0.27** 模式2 -0.12** -0.09 -0.45 -0.06 -0.41* -0.29* -0.13 -0.15* 注: *P < 0.05,**P < 0.01。 表 4 小学生PA、SB组合与身体姿态测评合格率的Logistic回归分析
Table 4. Logistic regression analysis of PA, SB combination and qualified rate of body posture assessment
指标 HSB LSB 人数 合格人数 合格率/% OR值(OR值95%CI) P值 人数 合格人数 合格率/% OR值(OR值95%CI) P值 LPA 61 5 8.20 1.00 23 8 34.78 1.71(1.41~2.74) 0.02 MPA 30 4 13.33 1.28(0.92~1.86) 0.72 33 12 36.36 2.04(1.58~3.32) 0.02 HPA 32 7 21.88 1.85(1.38~2.86) < 0.01 27 13 48.15 2.12(1.46~3.37) < 0.01 -
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