CARDIAC-LOCOMOTOR COUPLING WHILE FINGER TAPPING .2. A CROSS-OVER CONTROL STUDY
CARDIAC-LOCOMOTOR COUPLING WHILE FINGER TAPPING .2. A CROSS-OVER CONTROL STUDY
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DOI：
10.2466/pms.73.7.831-834
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发表时间：
1991-12-01
影响因子：
1.6
通讯作者：
MACLEOD, DA
中科院分区：
文献类型：
--
作者：
KIRBY, RL;GUPTA, SK;MACLEOD, DA
心脏运动耦合（CLC）已被我们报告，而人们的手指轻敲节奏自然他们。从那时起，我们开发了一种简单的交叉控制策略，其中一个受试者的心率与另一个受试者的手指敲击率相关。在先前研究的20名正常受试者中，以舒适的速度敲击电报键10分钟，对其数据的重新评价显示，在试验和对照条件下，分别有9个（45%）和4个（20%）出现个位数整数比率的偶联。在两种条件下，表观CLC的发生率和强度均无显著差异。最紧密相关的比率的光栅图没有锁相的证据。这些结果有两个含义。首先，以前发表的报告CLC（和其他夹带现象）应谨慎解释，交叉控制应考虑在未来的研究。其次，在手指敲击期间CLC的缺乏表明CLC可能仅在大肌肉群的运动期间具有功能性意义（例如，通过最小化心脏后负荷）或当冲击负荷发生时（例如，通过增强心室排空）。
Cardiac-locomotor coupling (CLC) has been reported by us while people finger tap at cadences natural to them. Since then, we have developed a simple crossover control strategy in which the heart rate of one subject is related to the finger-tapping rate of another. Of the 20 normal subjects previously studied while tapping a telegraph key at a comfortable rate for 10 min., reevaluation of their data showed that 9 (45%) and 4 (20%) of them, under test and control conditions, respectively, appeared to couple at a single-digit integer ratio. Neither the incidence nor the intensity of apparent CLC under the two conditions was significantly different. Raster plots of the most tightly related rates gave no evidence of phase locking. These results have two implications. First, previously published reports on CLC (and other entrainment phenomena) should be interpreted with caution, and cross-over controls should be considered in future research. Second, the absence of CLC during finger tapping suggests that CLC may only be functionally significant during exercise of large muscle groups (e.g., by minimization of cardiac afterload) or when impact-loading occurs (e.g., by enhancing cardiac ventricular emptying).