Collings Tyler J, Goodlich Benjamin I, Hams Andrea H, Bourne Matthew N
Australian Centre for Precision Health and Technology (PRECISE), Griffith University, Gold Coast, QLD, Australia; School of Health Sciences and Social Work, Griffith University, Gold Coast, QLD, Australia.
School of Health Sciences and Social Work, Griffith University, Gold Coast, QLD, Australia; School of Health, University of the Sunshine Coast, QLD, Australia.
Phys Ther Sport. 2025 Sep;75:135-143. doi: 10.1016/j.ptsp.2025.08.005. Epub 2025 Aug 13.
This study aimed to evaluate the intrarater within-day and between-day absolute agreement reliability of DynaMo Max and DynaMo Plus handheld dynamometers for upper and lower body isometric strength assessments compared to existing devices.
Repeated measures study.
Two laboratory sessions, seven days apart.
Twenty healthy, recreationally active adults (40 % female; age = 29.1 ± 5.8 years).
Intraclass correlation coefficients (ICC), coefficient of variation, and Bland-Altman plots and 95 % limits of agreement for fourteen isometric strength tests.
DynaMo Max exhibited excellent between-day and within-day reliability (ICC >0.90) for 21 of 24 (88 %) upper and lower body isometric strength tests. Tests using tension were more reliable than those using compression. DynaMo Plus demonstrated similar reliability to the Jamar Hydraulic device for grip strength, although limits of agreement were -7.4 to 7.7 kg. DynaMo Max measured peak IMTP force with high levels of agreement to the ForceDecks (R = 0.99, -22 to 95 N).
DynaMo Plus and Max are reliable tools for isometric strength assessments of upper and lower body muscle groups. Tension tests are recommended over manually resisted compression tests. DynaMo Max and Plus are accurate and reliable options for IMTP and grip strength testing, respectively.
本研究旨在评估DynaMo Max和DynaMo Plus手持式测力计在上半身和下半身等长肌力评估中，与现有设备相比，评估者日内和日间绝对一致性可靠性。
重复测量研究。
两个实验室环节，间隔七天。
20名健康、有休闲运动习惯的成年人（40%为女性；年龄 = 29.1 ± 5.8岁）。
组内相关系数（ICC）、变异系数、Bland-Altman图以及14项等长肌力测试的95%一致性界限。
在24项（88%）上半身和下半身等长肌力测试中，DynaMo Max在21项测试中表现出出色的日间和日内可靠性（ICC > 0.90）。使用拉伸的测试比使用压缩的测试更可靠。DynaMo Plus在握力测试中表现出与Jamar液压装置相似的可靠性，尽管一致性界限为 -7.4至7.7千克。DynaMo Max测量的最大自主等长收缩力峰值与ForceDecks高度一致（R = 0.99， -22至95牛）。
DynaMo Plus和Max是评估上半身和下半身肌肉群等长肌力的可靠工具。推荐使用拉伸测试而非手动抗阻压缩测试。DynaMo Max和Plus分别是最大自主等长收缩力和握力测试的准确可靠选择。
