Department of Trauma and Orthopedic Surgery, University of Witten/Herdecke, Universität Witten/Herdecke.
University of Witten/Herdecke, Universität Witten/Herdecke.
Sportverletz Sportschaden. 2022 Jun;36(2):92-99. doi: 10.1055/a-1349-5605. Epub 2021 May 19.
Hop tests play an important role in the rehabilitation process after injuries. A comparison of the jumping distances of both extremities allows for an evaluation of the injured limb. In the conventional cross-over hop test for distance, the jump width (medial vs. lateral) that the athlete has to cross during the jump is not standardised and therefore highly variable. This affects the absolute jump length in each jump series.
Modifying the test may reduce the jump length variance between test series of an athlete as well as the test-dependent variations in the cross-over hop for distance.
N = 47 athletes from the German and French national Judo youth teams were included in the study (age: 15.3 years ± 13-17). A modified version of the cross-over hop for distance was developed with a cross-over width of 50 cm and a fixed landing zone of 10 cm. The jump lengths of the conventional test and the modified test were documented. The change in jump length variations of the two sexes were compared.
The mean value of the coefficient of variation decreased significantly from 4.09 % to 2.83 % (p < 0.01) due to the test modification. This resulted in an absolute improvement in accuracy of 1.26 % and a relative improvement of 30.8 %. A comparison of the limb symmetry index between the conventional and the modified cross-over hop for distance revealed no significant differences.
The modified cross-over hop for distance showed a significantly lower variation in jump lengths compared with the conventional cross-over hop for distance. As a result, more accurate statements can be made regarding the patient's return-to-competition progress.
跳跃测试在受伤后的康复过程中起着重要作用。比较四肢的跳跃距离可以评估受伤的肢体。在传统的交叉跳跃测试中，运动员在跳跃过程中需要跨越的跳跃宽度（内侧与外侧）没有标准化，因此变化很大。这会影响每个跳跃系列的绝对跳跃长度。
修改测试可以减少运动员在各个测试系列之间的跳跃长度变化，以及跳跃距离交叉跳跃测试中的测试依赖性变化。
研究纳入了来自德国和法国国家青年柔道队的 47 名运动员（年龄：15.3 岁±13-17 岁）。开发了一种交叉跳跃距离的修改版本，交叉宽度为 50 厘米，固定着陆区为 10 厘米。记录了传统测试和修改测试的跳跃长度。比较了两种性别跳跃长度变化的差异。
由于测试修改，变异系数的平均值从 4.09%显著降低到 2.83%（p<0.01）。这导致准确性绝对提高了 1.26%，相对提高了 30.8%。比较传统和修改后的交叉跳跃距离的肢体对称性指数，没有发现显著差异。
与传统的交叉跳跃距离相比，修改后的交叉跳跃距离的跳跃长度变化明显更小。因此，可以更准确地评估患者重返比赛的进展情况。
