Reyes del Paso Gustavo A, Cea José I, González-Pinto Asunción, Cabo Olga M, Caso Rosario, Brazal Julio, Martínez Begoña, Hernández José A, González M Isabel
Departamento de Psicología, Facultad de Humanidades y CC.EE, Universidad de Jaén, 23071, Jaén, Spain.
Appl Psychophysiol Biofeedback. 2006 Mar;31(1):37-49. doi: 10.1007/s10484-006-9003-9.
Baroreceptor cardiac reflex sensitivity is reduced in hypertension and is considered a powerful prognostic factor in cardiovascular health. This study analyzes the acute effects of a brief respiratory training on baroreceptor sensitivity and on two new proposed baroreflex parameters: baroreceptor power (i.e., the percentage of cardiac beats regulated by the baroreflex) and effectiveness (i.e., the frequency in which the baroreflex responds to transient alterations in blood pressure). Twenty-two participants, 10 primary mild hypertensives and 12 normotensives, learned and practiced a respiratory pattern characterized by breathing at 6 bpm, with time of expiration being twice time of inspiration, predominantly abdominal, and with pursed lips. Baroreceptor parameters are differentiated in terms of increases ("up" sequences) or decreases ("down" sequences) in blood pressure. Irrespective of the groups, the breathing manipulation increased baroreceptor sensitivity (only in the "up" sequences), power, and effectiveness (only in the "down" sequences). These results suggest that this type of respiratory training could be used as a promising intervention to increase baroreceptor cardiac function in primary hypertension.
压力感受器心脏反射敏感性在高血压患者中降低，被认为是心血管健康的一个重要预后因素。本研究分析了简短呼吸训练对压力感受器敏感性以及两个新提出的压力反射参数的急性影响：压力感受器功率（即由压力反射调节的心跳百分比）和有效性（即压力反射对血压瞬时变化作出反应的频率）。22名参与者，10名原发性轻度高血压患者和12名血压正常者，学习并练习了一种呼吸模式，其特征为每分钟呼吸6次，呼气时间是吸气时间的两倍，主要为腹式呼吸且嘴唇噘起。压力感受器参数根据血压升高（“上升”序列）或降低（“下降”序列）来区分。无论组别如何，呼吸操作均增加了压力感受器敏感性（仅在“上升”序列中）、功率和有效性（仅在“下降”序列中）。这些结果表明，这种类型的呼吸训练可作为一种有前景的干预措施，用于增强原发性高血压患者的压力感受器心脏功能。
