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| 48周不同频率太极拳练习对老年女性骨密度的影响 |
| Effect of different frequency of Taichi exercise on bone mineral density of older women |
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| DOI：10.3969/j.issn.1006.7108.2017.10.010 |
| 中文关键词: 太极拳 锻炼频率 老年女性 骨密度 |
| 英文关键词:Tai chi Exercise frequency Older women Bone mineral density |
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| 中文摘要: |
| 目的 探讨相同周期、不同频率的太极拳练习对老年女性骨密度（BMD)的影响。方法 年龄、身髙和体重相匹配的低频组（n =36，1次/周）、中频组（n =37，3次/周）、髙频组（n =38，6次/周）和对照组（n = 37)，在48周前后采用XR-46双能X 线测试腰椎L2-4和右侧股骨近端（股骨颈、Ward三角区和大转子）BMD。结果 1)0周与48周组内比较：中频组和髙频组 腰椎L2-4、股骨颈和大转子BMD不同程度显著增大(P <0. 05)。其中髙频组大转子BMD非常显著增大（P <0. 01)；2)48周后组间比较：中频组和髙频组腰椎L2-4、股骨颈和大转子BMD显著大于对照组（P <0. 05)。髙频组腰椎L2-4、股骨颈和大转子BMD显著大于低频组（P <0.05)。中频组股骨颈BMD显著大于低频组（P <0.05)。结论 每周3次或6次的太极拳练习对提髙老年女性腰椎L2-4、股骨颈和大转子BMD有积极作用，随着练习频率的增加效果越显著。 |
| 英文摘要: |
| Objective To research on the effects of Taichi exercise given in the same duration but different frequency on bone mineral density (BMD) in older women. Methods Dividing the subjects in to three different groups based on age，height，and weight，including low frequency group (n = 36，once/week)，intermediate frequency group (n = 37，3 times/week) and high frequency group (n =38，6 times/ week). After 48 weeks，using XR-46 model dual energy X-ray absorptiometry，the BMD of lumbar spine L2-4and right proximal femur (femoral neck，Ward ’ s triangle and greater trochanter) was assessed. Results 1) Baseline and 48 weeks group comparison： in the intermediate frequency and high frequency groups， BMD of femoral neck， lumbar spine L2-4 andgreater trochanter increased significantly at different levels (P <0.05). The high frequency group had the greatest increase in greater trochanter BMD (P <0. 01); 2) Between group comparison at 48 weeks: the intermediate frequency and high frequency groups had significantly greater femoral neck，lumbar spine L2-4and greater trochanter BMD compared with the control group (P <0.05). High frequency group had significantly greater lumbar spine L2-4，femoral neck and greater trochanter BMD than the low frequency group (P <0. 05). Intermediate frequency group had significantly greater femoral neck BMD than the low frequency group (P <0. 05). Conclusion Taichi exercise three or six times a week significantly improved the bone condition in elderly women，BMD of femoral neck，lumbar spine L2-4 and greater trochanter all improved，and the increase of exercise frequency showed positive correlation with the improvement. |
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