正常碳酸血症和高碳酸血症期间呼吸和手指追踪运动的相位依赖性。

B Rassler, I Nietzold, S Waurick
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引用次数: 16

摘要

呼吸和其他运动活动之间的协调通常意味着呼吸节奏已被同步运动的节奏所控制。我们的假设是,通过增加呼吸驱动,例如通过高碳酸血症,我们将能够减少呼吸对其他动作的从属性,另一方面,增强呼吸对这些动作的影响。我们在视觉控制的步骤跟踪程序中研究了呼吸和手指弯曲运动之间的相互作用,这使我们能够区分相互影响,并检测这些影响对呼吸和运动之间的相位关系的依赖。与我们的假设相反,我们发现呼吸对高碳酸血症期间手指运动的影响没有大幅增加。一个值得注意的区别是在呼气最后阶段手指屈曲时间的缩短,这与屈曲时间结束和呼气到吸气过渡之间的巧合频率增加有关。另一方面,在吸气开始时给予跟踪信号,呼吸对手指运动的响应增强。研究结果推翻了我们的假设,并表明,在高碳酸血症期间,呼吸可能更容易受到运动控制的影响。因此,他们与先前的一项研究结果一致,即呼吸和有节奏的肢体运动之间的协调在高碳酸血症期间变得更加紧密。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phase-dependence of breathing and finger tracking movements during normocapnia and hypercapnia.

The coordination between breathing and other motor activities usually implies that the respiratory rhythm has become entrained by the rhythm of the simultaneous movement. Our hypothesis was that by increasing the respiratory drive, e.g. by hypercapnia, we would be able to reduce the subordination of breathing to other movements and, on the other hand, enhance effects of breathing on those movements. We investigated interactions between breathing and finger flexion movements in a visually controlled step-tracking procedure which allowed us to distinguish the mutual effects and to detect the dependence of these effects on the phase-relationship between breathing and movement. In contrast to our hypothesis, we found no large increase of the respiratory influences on finger movements during hypercapnia. A noteworthy difference to normocapnia was a shortening of the finger flexion time during the final stage of expiration which was associated with an increased frequency of coincidence between the end of flexion time and the transition from expiration to inspiration. On the other hand, the response of breathing to the finger movement increased when the tracking signal was presented at the beginning of inspiration. The results of the study disproved our hypothesis and demonstrated that, during hypercapnia, breathing can be even more susceptible to influences originating from motor control. Thus, they are in agreement with the findings of a previous study that the coordination between breathing and rhythmic limb movements becomes closer during hypercapnia.

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