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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Biomechanical Comparison of Single- and Double-Leg Jump Landings in the Sagittal and Frontal Plane
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Biomechanical Comparison of Single- and Double-Leg Jump Landings in the Sagittal and Frontal Plane

机译：射手和前平面上单腿跳跃着陆的生物力学比较

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Background: Double-leg forward or drop-jump landing activities are typically used to screen for high-risk movement strategies and to determine the success of neuromuscular injury prevention programs. However, research suggests that these tasks that occur primarily in the sagittal plane may not adequately represent the lower extremity biomechanics that occur during unilateral foot contact or non–sagittal plane movements that are characteristic of many multidirectional sports. Purpose: To examine the extent to which lower extremity biomechanics measured during a jump landing on a double leg (DL) after a sagittal plane (SAG) movement is representative of biomechanics measured during single-leg (SL) or frontal plane (FRONT) jump landing tasks. Study Design: Controlled laboratory study. Methods: Lower extremity biomechanics were measured in 15 recreationally active females (mean age [±SD], 19.4 ± 2.1 years; mean height, 163.3 ± 5.9 cm; mean weight, 61.1 ± 7.1 kg) while performing SAG_(DL), SAG_(SL), FRONT_(DL), and FRONT_(SL)jump landing tasks. Repeated-measures analyses of variance examined differences in lower extremity biomechanics between the 4 tasks, and linear regressions examined the extent to which an individual’s biomechanics during SAG_(DL)were representative of their biomechanics during SAG_(SL), FRONT_(DL), and FRONT_(SL). Results: Lower extremity kinematics and kinetics differed by condition, with the SAG_(DL)task generally eliciting greater hip and knee flexion angles and lower hip and knee forces than the other tasks ( P < .05). Although biomechanics during the SAG_(DL)task were strongly associated with those during the FRONT_(DL)task ( R ~(2), 0.41-0.82), weaker associations were observed between SAG_(DL)and single-leg tasks for hip kinematics ( R ~(2), 0.03-0.25) and kinetics ( R ~(2), 0.05-0.20) and knee abduction moments ( R ~(2), 0.06-0.18) ( P < .05). Conclusion: Standard double-leg sagittal plane jump landing tasks used to screen for ACL injury risk and the effectiveness of ACL injury prevention programs may not adequately represent the lower extremity biomechanics that occur during single-leg activities. Clinical Relevance: These results support further investigation of single-leg multidirectional landings to identify high-risk movement strategies in female athletes playing multidirectional sports.
机译：背景：双腿前进或下降跳转活动通常用于筛选高风险运动策略，并确定神经血型伤害预防计划的成功。然而，研究表明，主要在矢状平面中发生的这些任务可能无法充分地代表在单侧脚接触或非矢状平面运动期间发生的下肢生物力学，这些生物力学是许多多向运动的特征。目的：检查在矢状平面（SAG）运动后在双腿（DL）上跳转期间测量的下肢生物力学的程度代表单腿（SL）或前平面（前面）跳转期间测量的生物力学降落任务。研究设计：受控实验室研究。方法：在15个娱乐性雌性中测量下肢生物力学（平均年龄[±SD]，19.4±2.1岁;平均高度，163.3±5.9厘米;平均重量，61.1±7.1千克）在执行SAG_（DL），SAG_（ SL），Front_（DL）和Front_（SL）跳转到期任务。反复措施的差异分析检查了4个任务之间的下肢生物力学的差异，并检查了在SAG（DL）期间个体生物力学的程度在SAG_（SL），FRONT_（DL）期间代表其生物力学的程度，以及Front_（SL）。结果：下肢运动学和动力学因条件不同，SAG_（DL）任务通常引出较大的臀部和膝关节屈曲角度，比其他任务更大的臀部和膝关节和膝盖力（P <.05）。虽然在SAG_（DL）任务期间的生物力学与FRONT_（DL）任务期间强烈关联（R〜（2），0.41-0.82），但在SAG_（DL）和髋关节运动学的单腿任务之间观察到较弱的关联（R〜（2），0.03-0.25）和动力学（R〜（2），0.05-0.20）和膝关节绑架矩（R〜（2），0.06-0.18）（P <.05）。结论：用于筛选ACL损伤风险的标准双腿矢状平面跳转任务和ACL损伤预防计划的有效性可能无法充分代表单腿活动期间发生的下肢生物力学。临床相关性：这些结果支持进一步调查单腿多向着陆，识别女运动员中的高风险运动策略，演奏多向运动。

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