Coordinative variability and overuse injury.
Coordinative variability and overuse injury.
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DOI：
10.1186/1758-2555-4-45
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发表时间：
2012-11-27
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影响因子：
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通讯作者：
Van Emmerik RE
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文献类型：
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作者：
Hamill J;Palmer C;Van Emmerik RE
过度使用损伤通常被定义为组织的重复性微创伤。许多研究人员将特定的生物力学参数作为此类损伤的指标。然而，虽然这些参数已在单一研究中报告，但在许多情况下，很难验证这些参数是否是损伤的原因。我们已经调查了过度使用损伤，如髌股疼痛综合征，使用动力系统的方法。使用这种方法，协调可变性的结构（即段或关节之间的相互作用的可变性）的重要性变得显而易见。我们认为，协调的变异性在功能上对运动很重要，与终点或目标变异性不同。使用从伯恩斯坦的工作中得到的概念，我们进行了研究，使用连续相对相位和/或修改矢量编码的方法来调查过度使用损伤的协调变异性。一致地，我们发现，协调结构的高变异性状态是健康状态，而低变异性状态是不健康或病理状态。很明显，非常高的协调变异性也可能导致受伤，并且必须有一个“更高变异性”的窗口，在其中未受伤的运动员发挥作用。虽然这一发现，协调变异性是功能性的，已在几项研究中显示，它仍然不清楚，如果减少变异性有助于或导致的伤害。目前正在进行研究，以确定受伤运动员变异性降低的潜在原因。尽管如此，我们的实验室认为，这种对关节如何相互作用的理解对于理解过度使用损伤非常重要。
Overuse injuries are generally defined as a repetitive micro-trauma to tissue. Many researchers have associated particular biomechanical parameters as an indicator of such injuries. However, while these parameters have been reported in single studies, in many instances, it has been difficult to verify these parameters as causative to the injury. We have investigated overuse injuries, such as patella-femoral pain syndrome, using a dynamical systems approach. Using such methods, the importance of the structure of coordinative variability (i.e. the variability of the interaction between segments or joints) becomes apparent. We view coordinative variability as functionally important to the movement and different from end-point or goal variability. Using concepts derived from the work of Bernstein, we conducted studies using a continuous relative phase and/or modified vector coding approaches to investigate the coordinative variability of overuse injuries. Consistently, we have found that the higher variability state of a coordinative structure is the healthy state while the lower variability state is the unhealthy or pathological state. It is clear that very high coordinative variability could also result in injury and that there must be a window of ‘higher variability’ in which non-injured athletes function. While this finding that coordinative variability is functional has been shown in several studies, it is still not clear if reduced variability contributes to or results from the injury. Studies are currently underway to determine the potential reasons for the reduced variability in injured athletes. Nevertheless, our laboratory believes that this understanding of how joints interact can be important in understanding overuse injuries.