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Potential of IMU-Based Systems in Measuring Single Rapid Movement Variables in Females with Different Training Backgrounds and Specialization.
Applied Bionics and Biomechanics ( IF 2.2 ) Pub Date : 2020-07-01 , DOI: 10.1155/2020/7919514
Stefan Marković 1, 2 , Milivoj Dopsaj 1, 3 , Sašo Tomažič 2 , Anton Umek 2
Affiliation  

The aim of this paper is to determine the discriminative potential of the IMU-based system for the measurement of rapid hand movement properties, i.e., relevant kinematic variables in relation to different groups of participants. The measurement of the kinematics of the rapid hand movement was performed using a standard hand tapping test. The sample in this research included a total of 70 female participants and was divided into 3 subsamples. The discriminant analysis has identified two functions, DF1 and DF2, that explain 91.1 and 8.1% of the variance, respectively. The differences between the examined subsamples originate from the variables grouped in DF1, which were statistically significant (). In relation to this function, the national volleyball team centroid position was shifted with -1.108 and -1.968 standard deviation values from the control group and youth volleyball team, respectively. The difference between control and Voll_Youth groups was -0.860 standard deviation value. The factors with the greatest discriminative potential among the groups represent the temporal characteristics of the rapid hand movement, i.e., the time elapsed between the onset of the movement and the first and second tap, as defined by the variables and , respectively. The established findings clearly indicate that IMU sensors are practically applicable in relation to the sensitive measurement of rapid arm movement capability of female athletes.

中文翻译:

基于IMU的系统在测量具有不同培训背景和专业知识的女性中的单个快速运动变量中的潜力。

本文的目的是确定基于IMU的系统在快速手部运动特性(即与不同组的参与者相关的运动学变量)的测量中的判别潜力。快速手运动的运动学测量是使用标准手敲击测试进行的。本研究的样本包括总共70名女性参与者,并分为3个子样本。判别分析确定了两个函数DF 1和DF 2,它们分别解释了91.1%和8.1%的方差。检验的子样本之间的差异源自DF 1中分组的变量,这些变量具有统计学意义()。关于此功能,国家排球队质心的位置分别从对照组和青年排球队偏移-1.108和-1.968标准偏差值。对照组和Voll_Youth组之间的差异为-0.860标准偏差值。组中具有最大判别力的因素代表快速手部动作的时间特征,即,在动作开始与第一次敲击和第二次敲击之间经过的时间分别由变量和定义。既定的发现清楚地表明,IMU传感器在灵敏测量女运动员手臂快速运动能力方面实际上是适用的。
更新日期:2020-07-01
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