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背景:通常根据运动损伤和运动表现来评估僵硬度。本研究旨在通过分析1组受试者的数据,比较3种僵硬度评估方法的效度和信度。方法:为确定日间信度,15名女子篮网球运动员在1周内完成2次僵硬度评估。内容包括单侧跳跃(垂直僵硬度测试)、腓肠自由振荡以及组成腓肠三头肌几块肌肉的压力测定。为建立聚合建构效度将僵硬度与静态及动态力量测试相比较。结果:僵硬度重复测试结果表明,垂直僵硬度可达到中到高度信度,肌压力测定的信度可达到中到很高程度。与此相反,自由振荡技术的信度为低到中度。蹲跳期间垂直僵硬度与发力速度显著相关,同时下肢三处的肌力测定的僵硬度与等距力量速率也显著相关。此外,偏心利用率与肌力计测量的各种僵硬度结果间呈显著负相关。自由振荡技术与各种性能测量结果之间无相关关系。结论:垂直僵硬度和肌力计测量是有效、可信的刚度评估方法。
Background: The stiffness is usually assessed on the basis of sports injuries and sports performance. The aim of this study was to compare the validity and reliability of three methods for assessing stiffness by analyzing data from a group of subjects. Methods: In order to determine daytime reliability, 15 women basketball players completed two stiffnesses assessments within a week. The contents include unilateral jump (vertical stiffness test), gastrocnemius free oscillations, and pressure measurements on several muscles that comprise the triceps sural trochanter. The stiffness is compared with the static and dynamic strength tests to establish the constructive validity of the aggregate. Results: Repeated test results show that the stiffness of the mid-to-high degree of vertical stiffness can be achieved, and the reliability of the measurement of muscular pressure can reach a medium to high level. In contrast, the reliability of free-swinging technology is low to moderate. Vertical stiffness during squat jump was significantly correlated with hair speed, while stiffness at the three lower extremities was also significantly correlated with isometric strength. In addition, there was a significant negative correlation between eccentric utilization and various stiffness measurements of the strength meter. There is no correlation between the free-run technique and the various performance measurements. CONCLUSIONS: Vertical stiffness and strength measurements are effective and credible measures of stiffness.