Faculty of Physical Education and Sport, Charles University, Prague, Czech Republic.
J Strength Cond Res. 2023 Nov 1;37(11):2273-2281. doi: 10.1519/JSC.0000000000004535. Epub 2023 May 26.
Omcirk, D, Vetrovsky, T, Padecky, J, Malecek, J, and Tufano, JJ. Validity of commercially available punch trackers. J Strength Cond Res 37(11): 2273-2281, 2023-This study determined how well data from commercially available punch trackers (Corner, Hykso, and StrikeTec) related to gold-standard velocity and force measures during full-contact punches. In a quasi-randomized order, 20 male subjects performed 6 individual rear straight punches, rear hooks, and rear uppercuts against a wall-mounted force plate. Punch tracker variables were compared with the peak force of the force plate and to the peak (QPV) and mean velocity (QMV) assessed through Qualisys 3-dimensional tracking. For each punch tracker variable, Pearson's correlation coefficient, mean absolute percentage error (MAPE), and mean percentage error (MPE) were calculated. There were no strong correlations between punch tracker data and gold-standard force and velocity data. However, Hykso "velocity" was moderately correlated with QMV ( r = 0.68, MAPE 0.64, MPE 0.63) and QPV ( r = 0.61, MAPE 0.21, MPE -0.06). Corner Power G was moderately correlated with QMV ( r = 0.59, MAPE 0.65, MPE 0.58) and QPV ( r = 0.58, MAPE 0.27, MPE -0.09), but Corner "velocity" was not. StrikeTec "velocity" was moderately correlated with QMV ( r = 0.56, MAPE 1.49, MPE 1.49) and QPV ( r = 0.55, MAPE 0.46, MPE 0.43). Therefore, none of the devices fared particularly well for all of their data output, and if not willing to accept any room for error, none of these devices should be used. Nevertheless, these devices and their proprietary algorithms may be updated in the future, which would warrant further investigation.
奥姆西尔克、D、维特罗夫斯基、T、帕德克、J、马莱切克、J 和图法诺、JJ. 市售冲量跟踪器的有效性。J 力量与条件研究 37(11)：2273-2281，2023-本研究旨在确定市售冲量跟踪器（Corner、Hykso 和 StrikeTec）在全接触冲拳期间与黄金标准速度和力测量相关的程度。在准随机顺序下，20 名男性受试者对安装在墙上的力板进行了 6 次个体后直拳、后勾拳和后上钩拳。比较了冲量跟踪器变量与力板的峰值力以及通过 Qualisys 三维跟踪评估的峰值（QPV）和平均速度（QMV）。对于每个冲量跟踪器变量，计算了 Pearson 相关系数、平均绝对百分比误差（MAPE）和平均百分比误差（MPE）。冲量跟踪器数据与黄金标准力和速度数据之间没有很强的相关性。然而，Hykso“速度”与 QMV 中度相关（r=0.68，MAPE 0.64，MPE 0.63）和 QPV（r=0.61，MAPE 0.21，MPE-0.06）。Corner Power G 与 QMV 中度相关（r=0.59，MAPE 0.65，MPE 0.58）和 QPV（r=0.58，MAPE 0.27，MPE-0.09），但 Corner“速度”没有。StrikeTec“速度”与 QMV 中度相关（r=0.56，MAPE 1.49，MPE 1.49）和 QPV（r=0.55，MAPE 0.46，MPE 0.43）。因此，没有一个设备在其所有数据输出方面表现特别好，如果不愿意接受任何误差空间，这些设备都不应该使用。尽管如此，这些设备及其专有算法在未来可能会得到更新，这将需要进一步的调查。
