视觉注视对单腿跳测试表现的影响。
THE INFLUENCE OF VISUAL FIXATION ON HOP TEST PERFORMANCE.
作者信息
Ness Brandon M, Zimney Kory, Kernozek Thomas, Schweinle William E, Schweinle Amy
机构信息
Department of Physical Therapy, University of South Dakota, Vermillion, SD, USA.
La Crosse Institute for Movement Science, University of Wisconsin - La Crosse, La Crosse, WI, USA.
出版信息
Int J Sports Phys Ther. 2020 Aug;15(4):501-509.
BACKGROUND
It has been recognized that anterior cruciate ligament (ACL) injuries typically occur when athletes are attending to a secondary task or object, including teammates, opponents, and/or a goal. Commonly applied tests after ACL injury include a series of hop tests to determine functional status, yet do not control for visual fixation.
PURPOSE
To examine the influence of visual fixation during two functional hop tests in healthy individuals.
STUDY DESIGN
Repeated measures.
METHODS
Participants performed the crossover triple hop for distance (XHOP) on the left lower limb, and the medial triple hop for distance (MHOP) on the right. For the hop test only conditions, participants were not instructed where to fix their vision while performing the hop test. The visual fixation condition required participants to fix their vision on an alternating plus/minus sign at the center of a display monitor located in front of the participant while performing each hop test, respectively. A retest session occurred 48-72 hours after the initial test session in order to examine reliability.
RESULTS
Thirty-four healthy adults (age: 24.0 ± 3.9 years) completed testing procedures, performing the XHOP and MHOP under standard and visual fixation conditions. Of those participants, twelve completed a retest session for reliability analysis. Hop distance was not altered by the addition of visual fixation (p = 0.27), with trivial effect sizes found across conditions (d = 0.02 - 0.07); however, the addition of visual fixation slightly improved within- and between-session intrarater reliability, standard error of measurement, and minimal detectable change of the MHOP.
CONCLUSION
Hop distance during the XHOP and MHOP was not influenced by visual fixation. Measurement of both the XHOP and MHOP was reliable, but lacked precision. Measurement properties for the MHOP including within- and between-session reliability, standard error of measurement, and minimal detectable change improved slightly with the addition of visual fixation compared to normal MHOP procedures.
LEVEL OF EVIDENCE
2b.
背景
人们已经认识到，前交叉韧带（ACL）损伤通常发生在运动员关注次要任务或物体时，包括队友、对手和/或目标。ACL损伤后常用的测试包括一系列单腿跳测试以确定功能状态，但未控制视觉注视。
目的
研究在健康个体的两项功能性单腿跳测试中视觉注视的影响。
研究设计
重复测量。
方法
参与者用左下肢进行交叉单腿跳远距离测试（XHOP），用右下肢进行内侧单腿跳远距离测试（MHOP）。对于仅进行单腿跳测试的条件，参与者在进行单腿跳测试时未被指示将视线固定在哪里。视觉注视条件要求参与者在分别进行每次单腿跳测试时，将视线固定在位于参与者前方的显示监视器中央交替出现的正负号上。为了检验可靠性，在初始测试 session 后48 - 72小时进行了重新测试 session。
结果
34名健康成年人（年龄：24.0 ± 3.9岁）完成了测试程序，在标准和视觉注视条件下进行了XHOP和MHOP测试。在这些参与者中，12人完成了重新测试 session 以进行可靠性分析。视觉注视的加入并未改变单腿跳距离（p = 0.27），各条件下效应量较小（d = 0.02 - 0.07）；然而，视觉注视的加入略微提高了MHOP在 session 内和 session 间的评分者内可靠性、测量标准误和最小可检测变化。
结论
XHOP和MHOP期间的单腿跳距离不受视觉注视的影响。XHOP和MHOP的测量是可靠的，但缺乏精度。与正常MHOP程序相比，加入视觉注视后，MHOP的测量属性包括 session 内和 session 间可靠性、测量标准误和最小可检测变化略有改善。
证据水平
2b。
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