Pontillo Marisa, Sennett Brian
Penn Sports Medicine Center, University of Pennsylvania Philadelphia, PA, USA.
Int J Sports Phys Ther. 2020 Oct;15(5):698-702. doi: 10.26603/ijspt20200698.
Analysis of upper extremity weight bearing ability is important for athletes as some function largely in a closed chain capacity (e.g., wrestling, football, gymnastics); also, all require closed chain upper extremity function during strength and conditioning. Additionally, in a rehabilitation setting, closed chain upper extremity functional testing is often used as a return to play criterion. Lower extremity sway measures (biomechanical and clinical) have been published widely and have established reliability and validity; however, the reliability of upper extremity sway biomechanical measures has not been investigated to date.
HYPOTHESIS/PURPOSE: The purpose of this study was to determine the repeatability of a variety of force plate measurements during an upper extremity task in an athletic population. It was hypothesized that variables measuring upper extremity sway in a closed kinetic chain position would have excellent reliability.
Cross-sectional.
All data were collected using a force plate system with commercially available software. Four hundred and ninety healthy Division I athletes were tested for both their dominant and non-dominant upper extremity at one of two testing sessions. Subjects were instructed to stay as still as possible while maintaining a full plank position with one upper extremity on the force plate and the contralateral upper extremity behind their back. Two, 20-second trials were performed for each extremity. Variables measured included average sway velocity (ASV), sway velocity in medial-lateral (SVML) and anterior-posterior (SVAP) directions, sway velocity at 1 and 2 time intervals for AP (VAP1 and 2) and ML (VML1 and 2) directions, and sway frequency in the AP direction for 1 and 2 time intervals (FreAP1 and 2). Intraclass correlation coefficients (ICC) and their 95% confident intervals were calculated for all force plate variables for 980 limbs.
No difference was seen between left and right extremities for any measure ( > 0.05). ICC's ranged from 0.61-0.90 for all variables, indicating moderate to excellent reliability for all variables.
Upper extremity sway biomechanical variables using a force plate system have moderate to excellent reliability. These results are important prior to validation and clinical utilization of these measures including baseline testing, return to play guidelines, and injury prevention parameters.
上肢负重能力分析对运动员很重要，因为有些运动员很大程度上依赖闭链功能（如摔跤、足球、体操）；而且，所有人在力量训练和体能训练期间都需要闭链上肢功能。此外，在康复环境中，闭链上肢功能测试常被用作恢复比赛的标准。下肢摆动测量（生物力学和临床方面）已被广泛发表，并已确立了可靠性和有效性；然而，上肢摆动生物力学测量的可靠性迄今尚未得到研究。
假设/目的：本研究的目的是确定在运动员群体的上肢任务中各种测力台测量的可重复性。假设在闭链位置测量上肢摆动的变量将具有出色的可靠性。
横断面研究。
所有数据均使用带有商用软件的测力台系统收集。490名健康的一级运动员在两次测试中的一次对其优势上肢和非优势上肢进行了测试。受试者被要求尽可能保持静止，同时用一只上肢放在测力台上，对侧上肢放在背后，保持完整的平板支撑姿势。每个上肢进行两次20秒的试验。测量的变量包括平均摆动速度（ASV）、内外侧（SVML）和前后侧（SVAP）方向的摆动速度、前后侧（VAP1和2）和内外侧（VML1和2）方向在1和2个时间间隔的摆动速度，以及前后侧方向在1和2个时间间隔的摆动频率（FreAP1和2）。计算了980条肢体所有测力台变量的组内相关系数（ICC）及其95%置信区间。
任何测量指标在左右上肢之间均无差异（P＞0.05）。所有变量的ICC范围为0.61 - 0.90，表明所有变量具有中等至出色的可靠性。
使用测力台系统的上肢摆动生物力学变量具有中等至出色的可靠性。在对这些测量指标进行验证和临床应用之前，包括基线测试、恢复比赛指南和 injury prevention parameters（此处原文可能有误，推测为“损伤预防参数”），这些结果很重要。
3级。
