Niizeki K, Kawahara K, Miyamoto Y
Department of Electrical and Information Engineering, Faculty of Engineering, Yamagata University, Yonezawa, Japan.
Folia Primatol (Basel). 1996;66(1-4):226-39. doi: 10.1159/000157197.
Interactions between locomotor, respiratory, and cardiac rhythms were investigated in human subjects (n = 11) walking on a treadmill. Investigation of the phase relationship between heart rate and gait signals revealed that cardiac rhythms were entrained to locomotor rhythms when both frequencies were close to an integer ratio. Coherence spectra were estimated between heartbeat fluctuation, respiratory, and gait signals, and their magnitudes were evaluated. The results suggest that the respiratory-induced fluctuation in heartbeat would vary depending on the strength of the cardiolocomotor coupling. The synchronization tends to occur for one or two specific phases in an individual subject, but there was some variation among subjects. When the subjects voluntarily synchronized their cadence with the cardiac rhythm, the heart rate and blood pressure varied depending on the phase lag within a cardiac cycle. The coordination of locomotor and cardiac rhythms is discussed.
在跑步机上行走的人类受试者（n = 11）中研究了运动、呼吸和心律之间的相互作用。对心率和步态信号之间的相位关系进行研究发现，当两个频率接近整数比时，心律会与运动节律同步。估计了心跳波动、呼吸和步态信号之间的相干谱，并评估了它们的大小。结果表明，呼吸引起的心跳波动会因心脏运动耦合的强度而有所不同。在个体受试者中，同步往往发生在一两个特定阶段，但受试者之间存在一些差异。当受试者自愿将其步频与心律同步时，心率和血压会因心动周期内的相位滞后而变化。本文讨论了运动和心律的协调。
