...
首页> 外文期刊>PACE: Pacing and clinical electrophysiology >Variable effects of physical training of heart rate variability, heart rate recovery, and heart rate turbulence in chronic heart failure.
【24h】

Variable effects of physical training of heart rate variability, heart rate recovery, and heart rate turbulence in chronic heart failure.

机译:体育锻炼对慢性心力衰竭患者心率变异性,心率恢复和心率湍流的影响。

获取原文
获取原文并翻译 | 示例
           

摘要

BACKGROUND: Heart rate variability (HRV), heart rate turbulence (HRT), and heart rate recovery (HRR), indices that reflect autonomic nervous system (ANS) activity, are outcome predictors in patients with chronic heart failure (CHF). It is not clear, however, whether they reflect the same components of ANS activity. No study has examined the effects of physical training (PT) training on HRV, HRT, and HRR in CHF. STUDY OBJECTIVE: To examine the responses of HRV, HRT, and HRR to a PT program in patients presenting with CHF. METHODS: In 41 patients (mean age = 58.7 +/- 10.2 years) in New York Heart Association CHF functional classes II or III, and with a left ventricular ejection fraction <40%, HRV, HRT, and HRR were measured before and after 8 weeks of PT. RESULTS: The training was clinically effective in all patients. Before versus after PT, standard deviation of all normal RR intervals increased from 107 +/- 30 to 114 +/- 32 ms (P = 0.047), high frequency increased from 210 +/- 227 to 414 +/- 586 ms(2)/Hz (P = 0.02), and the low/high frequency ratio decreased from 1.8 +/- 1.55 to 1.1 +/- 1.2 (P = 0.002). HRT and HRR did not change significantly after PT. CONCLUSIONS: In patients with CHF, the positive effects of PT were limited to HRV indices, which reflect parasympathetic activity, without significantly changing HRR and HRT. These observations indicate that different mechanisms modulate HRV, HRR, and HRT, which provide complementary information regarding ANS activity. The 8-week PT program failed to completely normalize ANS function.
机译:背景:心律变异性(HRV),心律湍流(HRT)和心律恢复(HRR)是反映自主神经系统(ANS)活动的指标,是慢性心力衰竭(CHF)患者的预后指标。但是,尚不清楚它们是否反映了ANS活动的相同组成部分。尚无研究检查体育锻炼(PT)训练对CHF中HRV,HRT和HRR的影响。目的:探讨CHF患者HRV,HRT和HRR对PT程序的反应。方法:在纽约心脏协会CHF功能分类II或III的41例患者(平均年龄= 58.7 +/- 10.2岁)中,左心室射血分数<40%,在前后测量HRV,HRT和HRR PT的8周。结果:该训练在所有患者中均有效。在PT之前和之后,所有正常RR间隔的标准偏差从107 +/- 30毫秒增加到114 +/- 32毫秒(P = 0.047),高频从210 +/- 227增加到414 +/- 586毫秒(2 )/ Hz(P = 0.02),低频/高频比从1.8 +/- 1.55降低到1.1 +/- 1.2(P = 0.002)。 PT后HRT和HRR没有明显变化。结论:在CHF患者中,PT的积极作用仅限于HRV指数,反映副交感神经活动,而HRR和HRT无明显改变。这些观察结果表明,不同的机制可调节HRV,HRR和HRT,从而提供有关ANS活性的补充信息。为期8周的PT程序无法完全规范化ANS功能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号