Nickerson Brett S, Medrano Noel F, Perez Gabriel L, Narvaez Samantha V, Carrillo Joshua, Duque Misael
College of Nursing and Health Sciences, Texas A&M International University, Laredo, TX, USA.
Biol Sport. 2020 Dec;37(4):383-387. doi: 10.5114/biolsport.2020.96851. Epub 2020 Jul 5.
The purpose of this study was to evaluate the inter-device reliability of three VERT devices (Mayfonk Athletic, Florida, USA) when worn on the waist (W), left-hip (LH), and right-hip (RH) during single- and double-leg counter movement jumps (CMJ) in collegiate athletes. Thirty-two female and twenty-eight male NCAA Division II athletes (n = 60) participated in the present study. Jump height (JH) values for double-leg CMJs were analyzed by each device using a one-way repeated measures ANOVA whereas a 2 (jump leg) x 3 (wear location) repeated measures ANOVA was employed to evaluate single-leg CMJs. Reliability of the VERT devices were based upon intraclass correlation coefficients (ICC). Double-leg CMJs revealed an excellent ICC between all three VERT devices (ICC = 0.969). However, JH for RH and LH (45.69 ± 9.84 and 45.82 ± 10.45 cm, respectively) were on average lower than W (50.44 ± 12.37cm; both p < 0.001). The ICCs were excellent for right- and left-leg CMJs (ICC = 0.939 and 0.941, respectively). However, an interaction was observed (p < 0.001). No differences existed for left- or right-leg when VERT was worn on the waist. However, JH was higher when VERT devices were worn on the opposite hip of the jump leg (i.e., LH>RH for right-leg CMJs; RH>LH for leftleg CMJs; all p < 0.001). Results suggest that LH and RH are interchangeable for double-leg CMJs, but not with waist despite excellent reliability. In addition, all wear locations provided excellent ICCs for single-leg CMJs. However, waist provides more consistent JH values for right- and left-leg CMJs while RH and LH show more variability.
本研究的目的是评估三种VERT设备（美国佛罗里达州迈方克运动公司生产）在大学生运动员进行单腿和双腿反向纵跳（CMJ）时，佩戴在腰部（W）、左髋部（LH）和右髋部（RH）的设备间可靠性。32名女性和28名男性美国大学体育协会（NCAA）二级运动员（n = 60）参与了本研究。使用单因素重复测量方差分析，由每个设备分析双腿CMJ的跳跃高度（JH）值，而采用2（跳跃腿）×3（佩戴位置）重复测量方差分析来评估单腿CMJ。VERT设备的可靠性基于组内相关系数（ICC）。双腿CMJ显示，所有三种VERT设备之间的ICC极佳（ICC = 0.969）。然而，右髋部和左髋部的JH（分别为45.69±9.84和45.82±10.45厘米）平均低于腰部（50.44±12.37厘米；p均<0.001）。右腿和左腿CMJ的ICC极佳（分别为ICC = 0.939和0.941）。然而，观察到有交互作用（p < 0.001）。当VERT佩戴在腰部时，左腿或右腿之间没有差异。然而，当VERT设备佩戴在与跳跃腿相对的髋部时，JH更高（即，右腿CMJ时左髋部>右髋部；左腿CMJ时右髋部>左髋部；所有p < 0.001）。结果表明，对于双腿CMJ，左髋部和右髋部可互换，但与腰部不可互换，尽管可靠性极佳。此外，所有佩戴位置对于单腿CMJ都提供了极佳的ICC。然而，腰部为右腿和左腿CMJ提供了更一致的JH值，而右髋部和左髋部显示出更多变异性。
