王劲松,宗慧燕,郭华,等.年龄对女性股四头肌被动硬度的影响[J].中华物理医学与康复杂志,2024,46(11):999-1003
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| 年龄对女性股四头肌被动硬度的影响 |
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| DOI：10.3760/cma.j.cn421666-20231226-01033 |
| 中文关键词: 弹性超声成像 肌力 股四头肌 肌肉弹性 |
| 英文关键词: Elastography Ultrasound imaging Muscle force Quadriceps femoris muscles Muscle elasticity |
| 基金项目:四川省科技计划项目（2022YFS0280）;四川省卫生健康委员会医学科技项目（21PJ024） |
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| 中文摘要: |
| 目的 通过比较中老年女性和青年女性股四头肌肌肉的被动硬度，探讨年龄对肌肉硬度的影响以及肌肉硬度与下肢功能之间的关系。 方法 选取中老年健康女性20例，设为中老年女性组；另选取年轻健康女性20例，设为青年女性组。采用超声剪切波成像技术测量2组受试者屈膝30°、60°、90°和105°时股内侧肌、股直肌和股外侧肌的被动硬度，然后检测其6 min步行距离（6MWT）、5次坐-站测试（FTSST）和伸膝的最大等长自主收缩力（MIVC）。 结果 屈膝60°、90°和105°时，中老年女性组的股直肌和股外侧肌的硬度值均显著高于青年女性组（P<0.05）。青年女性组6MWT和FTSST均显著优于中老年女性组（P<0.01），且其屈膝60°和90°时的MIVC亦显著高于中老年女性组（P<0.05）。相关性分析显示，中老年女性组股直肌在屈膝60°时，其被动硬度与MIVC呈负相关关系（r=-0.485, P=0.012）。 结论 肌肉被动硬度随着年龄的增加而增加，且这种增加主要在肌肉牵伸状态下显著。屈膝60°时，中老年女性股四头肌的MIVC与其股直肌的硬度值呈负相关关系。 |
| 英文摘要: |
| Objective To explore the influence of age on the passive stiffness of women′s quadriceps muscles and the relationship between stiffness and muscle functioning. Methods Twenty healthy elderly women formed the senior-aged group, while 20 young, healthy women were selected as the young group. The passive stiffness of the subjects′ vastus medialis, rectus femoris and vastus lateralis muscles was measured using ultrasound shear wave imaging with the knee flexed to 30°, 60°, 90° and 105°. Both groups completed the 6-minute walk test (6MWT) and the five times sit-to-stand test (FTSST). Maximum voluntary isometric contraction (MIVC) strength during knee extension was also measured. Results The passive muscle stiffness of the rectus femoris and vastus lateralis muscles was significantly greater in the senior-aged group when the knee was flexed at 60°, 90° or 105°. The 6MWT and FTSST times of the young group were of course significantly better, and their MIVC at 60° and 90° of knee flexion was also significantly stronger. Rectus femoris stiffness among the senior-aged group was negatively correlated with MIVC when the knee was flexed at 60°. Conclusions The passive stiffness of the muscles studied increases with age, especially in stretching. When the knee joint is flexed at 60° there tends to be a negative correlation between the MIVC of the quadriceps femoris and the stiffness of the rectus femoris among elderly females. |
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