Physical Activity and Sports Department, International Excellence Campus "Mare Nostrum", University of Murcia, San Javier, Spain.
Training Optimization and Sports Performance Research Group (GOERD). Sport Science Faculty, University of Extremadura, Caceres, Spain; and.
J Strength Cond Res. 2020 Feb;34(2):365-373. doi: 10.1519/JSC.0000000000003106.
Gómez-Carmona, CD, Bastida-Castillo, A, González-Custodio, A, Olcina, G, and Pino-Ortega, J. Using an inertial device (WIMU PRO) to quantify neuromuscular load in running: reliability, convergent validity, and influence of type of surface and device location. J Strength Cond Res 34(2): 365-373, 2020-Currently, the use of accelerometers in sport is increasing, and thus, the devices are required to be valid and reliable. This study tested (a) the reliability and validity of WIMU PRO accelerometers to measure PlayerLoad (PL) and (b) the influence of speed, inertial device location, and type of surface where the incremental test is performed. Twenty resistance-trained men (age: 27.32 ± 6.65 years; height: 1.74 ± 0.03 m; body mass: 68.96 ± 4.37 kg; and body mass index: 22.76 ± 1.11 kg·m) volunteered to participate in the study that lasted 5 weeks. Four progressive incremental tests were performed in treadmill and athletic track conditions. External load variable (PL) and physiological variables (heart rate [HR] and SmO2) were recorded by 4 WIMU PRO inertial devices (scapulae, center of mass, knee, and ankle), a GARMIN HR band, and a MOXY near-infrared spectroscopy device, respectively. High reliability was found on both types of surface, showing the best values at the ankle (treadmill: intraclass correlation coefficient [ICC] = 0.99, coefficient of variation [CV] = 4.65%; track: ICC = 0.96, CV = 6.54%). A nearly perfect convergent validity was shown with HRAVG (r = 0.99) and a moderate one with SmO2 (r = -0.69). Significant differences in the PL variable between surfaces were reported in all locations except the scapulae (p = 0.173), and the higher values were found on the track. In the analysis per location, the ankle location reported the highest values at all speeds and on the 2 surfaces analyzed. Assessment needs to be individualized, due to the great variability of gait biomechanics among subjects. The accelerometer location should be chosen according to the purpose of the measurement, with the ankle location being recommended for neuromuscular load analysis in running.
戈麦斯-卡莫纳、CD、巴斯蒂达-卡斯蒂略、A、冈萨雷斯-库斯托迪奥、A、奥尔西纳、G 和皮诺-奥尔特加、J. 使用惯性设备（WIMU PRO）量化跑步中的神经肌肉负荷：可靠性、收敛效度以及表面类型和设备位置的影响。J 力量与调理研究 34（2）：365-373，2020 年-目前，加速度计在运动中的使用正在增加，因此需要设备具有有效性和可靠性。本研究测试了（a）WIMU PRO 加速度计测量运动员负荷（PL）的可靠性和有效性，以及（b）速度、惯性设备位置和执行增量测试的表面类型对其的影响。20 名有抗阻训练经验的男性（年龄：27.32 ± 6.65 岁；身高：1.74 ± 0.03 m；体重：68.96 ± 4.37 kg；体重指数：22.76 ± 1.11 kg·m）自愿参加了这项持续 5 周的研究。在跑步机和田径场条件下进行了 4 次渐进式增量测试。通过 4 个 WIMU PRO 惯性设备（肩胛骨、质心、膝盖和脚踝）、一个 GARMIN HR 带和一个 MOXY 近红外光谱设备分别记录外部负荷变量（PL）和生理变量（心率[HR]和 SmO2）。在两种表面上都表现出了很高的可靠性，脚踝处的最佳值最高（跑步机：组内相关系数[ICC] = 0.99，变异系数[CV] = 4.65%；田径场：ICC = 0.96，CV = 6.54%）。与 HRAVG（r = 0.99）具有近乎完美的收敛效度，与 SmO2（r = -0.69）具有中度的收敛效度。除了肩胛骨（p = 0.173）外，在所有位置都报告了表面之间 PL 变量的显著差异，并且在田径场上的数值更高。在按位置进行的分析中，在所有速度和分析的 2 个表面上，脚踝位置报告的数值最高。由于个体之间的步态生物力学存在很大差异，因此需要进行个体化评估。应根据测量目的选择加速度计的位置，推荐使用脚踝位置进行跑步中的神经肌肉负荷分析。
