目的：本研究旨在应用新型肌肉硬度测试系统评估不同支撑平面对健康成年人竖脊肌的影响并进行信度研究。 方法：本研究共招募20名健康成年人，其中健康成年男性10名，健康成年女性10名。每位受试者先后坐在两种软硬不同的支撑平面（瑞士球和硬面椅）上由治疗师A完成竖脊肌硬度测量后，治疗师B按同样方法对所有受试者再次进行测量。治疗师A于5天后按同样方法对所有受试者再次进行测量。 结果：同一治疗师与不同治疗师应用新型肌肉硬度测试系统在瑞士球和硬面椅上评估受试者竖脊肌硬度信度均为优秀。受试者坐于瑞士球上时竖脊肌硬度显著高于硬面椅。 结论：应用新型肌肉弹性测试系统在不同支撑平面上评估受试者竖脊肌硬度切实可行，且信度较高，该方法可用于临床康复训练及评估。瑞士球训练是有效激活成年人竖脊肌的一种训练方法。
Objective: We aim to survey the reliabilities of intra- and inter-rater for using the new muscle stiffness testing system in assessing the hardness of the erector spinae under different support plane. Method: A total of 10 healthy adult males and 10 healthy adult females were recruited into the study. The bilateral erector spinae hardness was evaluated on different support plane (a stable-surface chair and a Swiss ball) by therapist A, then, all participants were retested using the same method by therapist B. After five days interval, all participants were retested using the same method by therapist A. Result: The intra- and inter-rater reliabilities for assessing the hardness of the erector spinae on a Swiss ball and a stable-surface chair were excellent. A significant increase in the hardness of the erector spinae was discovered on the Swiss ball when compared with a stable-surface chair. Conclusion: Applying a new muscle stiffness testing system for measuring erector spinae stiffness on different support plane is a feasible method and has excellent reliability. The erector spinae can be activated on a Swiss ball significantly.