Department of Otolaryngology, The Ohio State University, Columbus.
Applied Neuromechanics Research Group, Department of Kinesiology, The University of North Carolina at Greensboro.
J Athl Train. 2019 Jan;54(1):81-89. doi: 10.4085/1062-6050-498-16. Epub 2019 Jan 16.
Predicting and promoting physical performance are important goals within the tactical professional community. Movement screens are frequently used in this capacity but are poor predictors of performance outcomes. It has recently been shown that prediction improved when movement quality was evaluated under load, but the mechanisms underlying this improvement remain unclear. Because balance, range of motion, and strength are mutually relevant to physical performance and movement quality, these attributes may mediate load-related decreases in movement quality and account for the resulting increase in performance prediction.
To quantify the roles of balance, range of motion, and strength in mediating load-related decreases in clinical movement-screen scores.
Crossover study.
Research laboratory.
Twenty-five male (age = 23.96 ± 3.74 years, height = 178.82 ± 7.51 cm, mass = 79.66 ± 12.66 kg) and 25 female (age = 22.00 ± 2.02 years, height = 165.40 ± 10.24 cm, mass = 63.98 ± 11.07 kg) recreationally active adults.
INTERVENTION(S): Participants completed a clinical movement screen under a control condition and while wearing an 18.10-kg weighted vest as well as tests of balance, range of motion, and strength.
MAIN OUTCOME MEASURE(S): Item score differences were assessed using Wilcoxon signed rank tests for matched pairs. Interactions between (1) balance, range of motion, and strength and (2) load condition were modeled using penalized varying-coefficients regression with item scores as the dependent measure.
Except for the hurdle step, item scores were lower in the weighted-vest than in the control condition for all tests ( P < .05). Except for rotary stability, F statistics were significant for all models ( P values < .05, R values = 0.22-0.77). Main effects of balance, range of motion, and strength on Functional Movement Screen scores were observed ( P < .05); however, little evidence was found to suggest that these attributes mediated load-related decreases in Functional Movement Screen item scores.
Balance, range of motion, and strength affected movement quality but did not mediate the effect of the load treatment.
预测和提升身体表现是战术专业领域的重要目标。运动筛查常被用于此目的，但它们对表现结果的预测能力较差。最近的研究表明，当在负荷下评估运动质量时，预测能力会得到提高，但这种提高的机制尚不清楚。由于平衡、活动范围和力量与身体表现和运动质量相互关联，这些属性可能会介导与负荷相关的运动质量下降，并解释由此导致的表现预测能力的提高。
量化平衡、活动范围和力量在介导与负荷相关的运动筛查评分下降中的作用。
交叉研究。
研究实验室。
25 名男性（年龄=23.96±3.74 岁，身高=178.82±7.51cm，体重=79.66±12.66kg）和 25 名女性（年龄=22.00±2.02 岁，身高=165.40±10.24cm，体重=63.98±11.07kg）的休闲运动成人。
参与者在控制条件下和穿着 18.10 公斤负重背心的情况下完成临床运动筛查，同时还进行了平衡、活动范围和力量测试。
使用配对符号秩检验评估项目得分差异。使用带项目得分作为因变量的惩罚变系数回归模型，对（1）平衡、活动范围和力量与（2）负荷条件之间的相互作用进行建模。
除了跨栏步，所有测试在负重背心条件下的项目得分都低于控制条件（P<.05）。除了旋转稳定性，所有模型的 F 统计值均具有统计学意义（P 值<.05，R 值=0.22-0.77）。平衡、活动范围和力量对功能性运动筛查评分有主要影响（P<.05）；然而，几乎没有证据表明这些属性介导了与负荷相关的功能性运动筛查项目得分的下降。
平衡、活动范围和力量影响运动质量，但没有介导负荷处理的影响。
