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首页> 外文期刊>Journal of Biomechanics >Soldier-relevant body borne loads increase knee joint contact force during a run-to-stop maneuver
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Soldier-relevant body borne loads increase knee joint contact force during a run-to-stop maneuver

机译：与士兵相关的身体负载在步入停停操作期间增加了膝关节的接触力

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The purpose of this study was to understand the effects of load carriage on human performance, specifically during a run-to-stop (RTS) task. Using OpenSim analysis tools, knee joint contact force, grounds reaction force, leg stiffness and lower extremity joint angles and moments were determined for nine male military personnel performing a RTS under three load configurations (light, similar to 6 kg, medium, similar to 20 kg, and heavy, similar to 40 kg). Subject-based means for each biomechanical variable were submitted to repeated measures ANOVA to test the effects of load. During the RTS, body borne load significantly increased peak knee joint contact force by 1.2 BW (p < 0.001) and peak vertical (p < 0.001) and anterior posterior (p= 0.002) ground reaction forces by 0.6 BW and 0.3 BW, respectively. Body borne load also had a significant effect on hip (p = 0.026) posture with the medium load and knee (p= 0.046) posture with the heavy load. With the heavy load, participants exhibited a substantial, albeit non-significant increase in leg stiffness (p =0.073 and d=0.615). Increases in joint contact force exhibited during the RTS were primarily due to greater GRF5 that impact the soldier with each incremental addition of body borne load. The stiff leg, extended knee and large braking force the soldiers exhibited with the heavy load suggests their injury risk may be greatest with that specific load configuration. Further work is needed to determine if the biomechanical profile exhibited with the heavy load configuration translates to unsafe shear forces at the knee joint and consequently, a higher likelihood of injury. Published by Elsevier Ltd.
机译：这项研究的目的是了解负载运输对人类绩效的影响，特别是在“走走停停”（RTS）任务期间。使用OpenSim分析工具，确定了在三种载荷配置下（轻型，类似于6公斤，中等，类似于20种）RTS的9名男性军事人员的膝关节接触力，地面反作用力，腿部刚度和下肢关节角度和力矩。公斤，并且很重，类似于40公斤）。对于每个生物力学变量，均采用基于受试者的方法进行重复测量方差分析，以测试负荷的影响。在RTS期间，人体承受的负荷使膝关节峰值接触力显着增加了1.2 BW（p <0.001），垂直地面峰值作用力（p <0.001）和前后后部峰值作用力（p = 0.002）分别增加了0.6 BW和0.3 BW。在中等负荷下，身体负荷对髋部姿势（p = 0.026）也有显着影响;在重负荷下，膝关节姿势（p = 0.046）也有显着影响。在沉重的负荷下，参与者的腿部僵硬度显着提高，尽管无明显增加（p = 0.073和d = 0.615）。在RTS期间表现出的关节接触力的增加主要是由于GRF5的增加，每增加一次人体负荷，GRF5就会影响士兵。士兵在重负荷下表现出的僵硬的腿，伸直的膝盖和巨大的制动力表明，在这种特定的负荷配置下，他们的受伤风险可能最大。需要做进一步的工作来确定在重负荷配置下表现出的生物力学轮廓是否会转化为在膝关节处的不安全剪切力，从而导致受伤的可能性更高。由Elsevier Ltd.发布

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