Investigations into the mechanisms underlying contralateral and remote neuromuscular responses to ipsilateral actions.

研究对侧和远端神经肌肉对同侧动作反应的机制。

• 批准号: 238792-2012
• 负责人: Behm, David
• 金额: $ 1.97万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=594187
• 关键词: Investigations; into; mechanisms; underlying; contralateral

The ability to fully activate muscle has been a disputed question for more than 50 years. This question is till controversial. Most of the research conducted on this question has used individual muscles in non-realistic situations. When individuals typically move, there are a variety of movements occurring on both sides of the body and interactions between the upper and lower body. It is known that when muscles contract on one side, neural signals are sent to the spinal cord, brain and subsequently to muscles on the other side. Most of these type of studies have examined the same muscle on the contralateral (opposite) side. It is unknown to what extent the activation or fatigue of a muscle on one side will affect the functioning of a different muscle on the other side. Blood flow on the opposite side can also be affected so contralateral changes may not be just due to neural effects. This effect not only has implications for understanding how the brain and spinal cord distribute information but also could have implications for individuals who are undergoing rehabilitation and can train one muscle but not others. Furthermore there are reflexes originating from birth known as primitive reflexes that affect the functioning of muscle actions on both sides of the body. It is believed that we lose these reflexes as we mature from the infant stage. However primitive reflexes can return with older individuals and people with low back pain. It is not known if these primitive reflexes are still present when young adults perform movements that mimic these reflexes. These reflexes have been shown to help people with low back pain activate particular muscles. It might be possible to use these reflexes to help older individuals gain strength or control of muscles. They may even affect a young adult's ability to fully activate specific muscles. Thus it is important to investigate for the sake of basic science and rehabilitation and training implications the interaction between different muscles under rested and fatiguing conditions.

50多年来，充分激活肌肉的能力一直是一个有争议的问题。这个问题直到有争议。在这个问题上进行的大多数研究都在非现实情况下使用了单个肌肉。当个体通常移动时，身体两侧都会发生多种运动，并且上半身之间有相互作用。众所周知，当肌肉在一侧收缩时，将神经信号送到脊髓，大脑，然后将神经信号发送到另一侧的肌肉。这些类型的研究大多数都检查了对侧（相对）的相同肌肉。一侧肌肉的激活或疲劳在多大程度上会影响另一侧不同肌肉的功能。另一侧的血流也可能受到影响，因此对侧变化可能不仅是由于神经作用引起的。这种效果不仅对了解大脑和脊髓如何分配信息有影响，而且还可能对正在康复并可以训练一种肌肉而不是其他人训练的个体产生影响。此外，还有反射起源于出生，称为原始反射，会影响身体两侧肌肉作用的功能。据信，随着我们从婴儿阶段成熟，我们会失去这些反射。但是，原始反射可以与年龄较大的人和腰痛的人一起返回。当年轻人执行模仿这些反射的运动时，这些原始反射是否仍然存在。这些反射已被证明可以帮助患有腰痛的人激活特定的肌肉。可能可以使用这些反射来帮助老年人获得力量或控制肌肉。它们甚至可能影响年轻人充分激活特定肌肉的能力。因此，重要的是要研究基础科学，康复和训练的意义，在休息和疲劳状态下，不同肌肉之间的相互作用。