基于 3D 相机的捕捉杠铃速度跟踪装置的有效性和可靠性评估。

Validity and reliability assessment of 3-D camera-based capture barbell velocity tracking device.

机构信息

Nebraska Athletic Performance Laboratory, University of Nebraska-Lincoln, USA; Department of Biological Systems Engineering, University of Nebraska-Lincoln, USA.

Nebraska Athletic Performance Laboratory, University of Nebraska-Lincoln, USA.

出版信息

J Sci Med Sport. 2020 Jan;23(1):7-14. doi: 10.1016/j.jsams.2019.07.014. Epub 2019 Aug 7.

DOI:10.1016/j.jsams.2019.07.014

PMID:31421988

Abstract

UNLABELLED

Velocity-based training (VBT) requires the monitoring of lift velocity plus the prescribed resistance weight. A validated and reliable device is needed to capture the velocity and power of several exercises.

OBJECTIVES

The study objectives were to examine the validity and reliability of the Elite Form Training System® (EFTS) for measures of peak velocity (PV), average velocity (AV), peak power (PP), and average power (AP).

DESIGN

Validity of the EFTS was assessed by comparing measurements simultaneously obtained via the Qualisys Track Manager software (C-motion, version 3.90.21, Gothenburg, Sweden) utilizing 6 motion capture cameras (Oqus 400, 240 Hz, Gothenburg, Sweden).

METHODS

Six participants performed 6 resistance exercises in 2 sessions: power clean, dead lift, bench press, back squat, front squat, and jump squat.

RESULTS

Simple Pearson correlations indicated the validity of the device (0.982, 0.971, 0.973, and 0.982 for PV, AV, PP, and AP respectively) and ranged from 0.868 to 0.998 for the 6 exercises. The test-retest reliability of the EFTS was shown by lack of significant change in the Pearson correlation (<0.3% for each variable) between the 2 sessions. The multiple count error rate was 2.0% and the missed count error rate was 2.1%.

CONCLUSIONS

The validity and reliability of the EFTS were classified as excellent across all variables and exercises with only one exercise showing a slight influence by the velocity of the movement.

摘要

未加标签

速度训练（VBT）需要监测提升速度和规定的阻力重量。需要一种经过验证和可靠的设备来捕捉几种运动的速度和功率。

目的

本研究的目的是检验 Elite Form Training System®（EFTS）在测量峰值速度（PV）、平均速度（AV）、峰值功率（PP）和平均功率（AP）方面的有效性和可靠性。

设计

通过同时使用 6 个运动捕捉相机（Oqus 400，240 Hz，哥德堡，瑞典）获得的 Qualisys Track Manager 软件（C-motion，版本 3.90.21，哥德堡，瑞典）的测量值来评估 EFTS 的有效性。

方法

6 名参与者在 2 个会话中进行了 6 项阻力运动：挺举、硬拉、卧推、深蹲、前蹲和跳跃深蹲。

结果

简单的皮尔逊相关性表明了该设备的有效性（PV、AV、PP 和 AP 分别为 0.982、0.971、0.973 和 0.982），6 项运动的相关性范围为 0.868 至 0.998。EFTS 的测试-再测试可靠性表现为两次会议之间皮尔逊相关性没有明显变化（每个变量<0.3%）。多次计数错误率为 2.0%，漏计错误率为 2.1%。