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| 中学生网球运动员上肢骨密度的不对称性及其增龄性变化规律 |
| The asymmetry of upper limb BMD and its relationship with age in middle school tennis players |
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| DOI：10.3969/j.issn.1006-7108.2019.06.006 |
| 中文关键词: 中学生 网球运动 上肢 骨密度 不对称性 年龄 |
| 英文关键词:middle school students tennis upper limb bone mineral density asymmetry age |
| 基金项目:河南省科技攻关计划项目(172102310163)；2019年度河南省高校重点科研项目（19A890010） |
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| 中文摘要: |
| 目的 探讨网球运动对中学生上肢骨密度的影响以及骨密度不对称性和年龄之间的关系。方法 受试者包括中学生网球运动员（运动组）和普通中学生（普通组）。其中运动组13岁的36人，14岁的38人，15岁的40人，16岁的38人，17岁的36人。普通组13～17岁每个年龄各40人。每组的各个年龄的受试者人数都是男女各半。采用美国诺兰德公司生产的XR-600双能X线骨密度仪对受试者左右上肢骨密度进行测量。计算上肢左右侧骨密度差值的绝对值（FA）。运用SPSS 13.0统计软件对实验所得数据进行统计学分析。结果 （1）除13岁外，其他年龄的受试者上肢骨密度在同一侧别不同组别之间差异都有统计学意义（P＜0.05），尤其是右侧存在极显著性差异（P＜0.01）；（2）普通组上肢骨密度不存在显著性的侧别差异（P＞0.05），但是运动组除13岁和14岁外其他年龄都存在显著性的侧别差异（P＜0.05）；（3）运动组上肢骨密度的FA值在15岁和16岁两个年龄之间没有显著性差异（P＞0.05），但是在16岁和17岁以及15岁和17岁之间都存在着显著性差异（P＜0.05）。结论 长期网球运动能够提高中学生的上肢骨密度，还能够造成上肢骨密度的不对称性，而且这种不对称性有随着年龄增加而变大的趋势，这可能与网球运动的积累效应有关。 |
| 英文摘要: |
| Objective To investigate the effect of tennis playing on upper limb BMD in middle school students and the relationship between BMD asymmetry and age. Methods The subjects included middle school tennis players (sports group) and ordinary middle school students (ordinary group). Among them, 36 tennis players were in the sports group at the age of 13, 38 at the age of 14, 40 at the age of 15, 38 at the age of 16 and 36 at the age of 17. The ordinary group consisted of 40 students in each age group from 13 to 17 years. The number of subjects in each group was half male and half female. XR-600 dual-energy X-ray absorptiometry was used to measure the BMD of the left and right upper limbs of the subjects. Absolute value of bone mineral density difference between left and right extremities was calculated by (FA). The experimental data were statistically analyzed by SPSS13.0 software. Results (1) Except for the 13 years old group, there were significant differences in BMD between different groups at the same side (P<0.05), especially at the right side (P<0.01). (2) There was no significant difference in BMD of upper limbs between the left and right sides in the ordinary group (P>0.05), but there was a significant difference in age groups other than 13 and 14 years in the sports group (P<0.05). (3) There was no significant difference in FA between 15 and 16 years old in sports group (P>0.05), but there were significant differences between 16 and 17 years old and 15 and 17 years old (P<0.05). Conclusion Long-term tennis playing can increase the BMD of upper limbs in middle school students, also cause asymmetry of upper limb BMD and this asymmetry has the tendency of increasing with age, which may be related to the accumulative effect of tennis playing. |
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