Reyes-Ferrada Waleska, Chirosa-Ríos Luis, Chirosa-Ríos Ignacio, Martínez-García Darío, Barboza-Gonzalez Paola, Ulloa-Díaz David, Jerez-Mayorga Daniel, Rodríguez-Perea Ángela
Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Exercise and Rehabilitation Sciences Laboratory, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile.
Acta Bioeng Biomech. 2022;24(1):49-57.
This study aimed to examine the reliability of trunk extensor strength assessment with a functional electromechanical dynamometer (FEMD).
Thirty-one men performed strength assessment at different velocities (V) (V1 = 0.15 m⋅s-1 , V2 = 0.30 m⋅s-1,V3 = 0.45 m⋅s-1) and range of movement (R) (R1 = 25% cm; R2 = 50% cm), and isometric contraction at 90°. Reliability was obtained through the intraclass correlation coefficient (ICC), typical error (TE), and coefficient of variation (CV).
The absolute reliability provided stable repeatability of the average eccentric strength in the V1R1 condition (CV = 9.52%) and the maximum eccentric strength in V1R1 (CV = 9.63%) and V2R2 (CV = 9.66%). The relative reliability of the trunk extensor's average strength was good (ICC = 0.77-0.83) for concentric and good (ICC = 0.78-0.85) and moderate (ICC = 0.67-0.74) for eccentric contraction. Also, good (ICC = 0.77-0.81) and moderate (ICC = 0.55-0.74) reliability of the maximum strength were obtained for concentric and eccentric contraction. The most reliable manifestation to evaluate the concentric (CV = 11.33%) and eccentric (CV = 9.52%) strength was the average strength in the V1R1 condition and the maximum strength (CV = 10.29%) to isometric assessment. The average concentric strength in the V2R2 condition (r = 0.69) and the maximum eccentric strength in the V1R1 condition (r = 0.65) were the best related to the maximum isometric strength.
FEMD is a highly reliable device to evaluate trunk extensors strength.
本研究旨在检验使用功能型电动测力计（FEMD）评估躯干伸肌力量的可靠性。
31名男性在不同速度（V）（V1 = 0.15 m·s-1，V2 = 0.30 m·s-1，V3 = 0.45 m·s-1）和运动范围（R）（R1 = 25% cm；R2 = 50% cm）下进行力量评估，并在90°进行等长收缩。通过组内相关系数（ICC）、典型误差（TE）和变异系数（CV）获得可靠性。
绝对可靠性在V1R1条件下为平均离心力量提供了稳定的重复性（CV = 9.52%），在V1R1（CV = 9.63%）和V2R2（CV = 9.66%）条件下为最大离心力量提供了稳定的重复性。躯干伸肌平均力量的相对可靠性对于向心收缩良好（ICC = 0.77 - 0.83），对于离心收缩良好（ICC = 0.78 - 0.85）且中等（ICC = 0.67 - 0.74）。此外，对于向心和离心收缩，最大力量的可靠性良好（ICC = 0.77 - 0.81）且中等（ICC = 0.55 - 0.74）。评估向心（CV = 11.33%）和离心（CV = 9.52%）力量最可靠的表现是V1R1条件下的平均力量以及等长评估的最大力量（CV = 10.29%）。V2R2条件下的平均向心力量（r = 0.69）和V1R1条件下的最大离心力量（r = 0.65）与最大等长力量的相关性最佳。
FEMD是评估躯干伸肌力量的高度可靠的设备。
