The impact of working night shifts on cardiac autonomic nervous regulation during the six-minute walk test in nurses.

IF 3.1 2区医学 Q1 NURSING

BMC Nursing Pub Date : 2024-12-18 DOI:10.1186/s12912-024-02563-y

Taihe Zhan, Xiumei Wei, Ziying Zhang, Zhimin Shi, Hongyan Xie, Xiaotao Ma, Suyue Pan, Daogang Zha

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Abstract

Background: Clinical nurses frequently face the necessity of working night shifts, often with insufficient opportunities for timely sleep recovery, which may negatively impact autonomic nervous system regulation. The aim of this study was to evaluate changes in heart rate variability (HRV) after the six-minute walk test (6MWT) in nurses post-night shift and to explore the impact of night shift work on cardiac autonomic regulation.

Methods: Thirty-five female nurses, with a mean age of 28.7 years (range 21.0-37.0 years), participated in this study. On the first and second mornings after a night shift, the nurses performed the 6MWT. During the test, electrocardiogram (ECG) signals, blood pressure, and walking distance were recorded simultaneously.

Results: Compared with the second postshift morning, on the first postshift morning, nurses presented higher ratings of perceived exertion (RPE), higher Borg scale scores, and a slower pulse rate before and after the 6MWT but covered a shorter walking distance. Additionally, HRV indicators such as the SDNN, RMSSD, pNN50, TP, VLF, LF, and HF were all higher on the first postshift morning. Regarding the amplitude of cardiac autonomic nervous regulation, variations in the RMSSD and pNN50 were both greater during the 6MWT on the first postshift morning, although there was no significant difference in post-6MWT recovery.

Conclusions: Night shifts appear to increase the activity of the autonomic nervous system in nurses on the first postshift morning and exert a greater inhibitory effect on parasympathetic activity during the 6MWT. Therefore, it is important to ensure timely recovery sleep and improve autonomic regulation after working night shifts.

Keywords: Heart rate variability; Night shift; Autonomic nervous system; Six-minute walk test; Nurses.

Trial registration: This study was retrospectively registered in the Clinicaltrials.gov. Registration Date: August 1, 2024.

Clinicaltrials: gov ID: NCT06542510.

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护士6分钟步行测试中夜班对心脏自主神经调节的影响。

背景：临床护士经常需要上夜班，往往没有足够的机会及时恢复睡眠，这可能会对自主神经系统的调节产生负面影响。本研究旨在评估护士夜班后6分钟步行测试（6MWT）后心率变异性（HRV）的变化，并探讨夜班工作对心脏自主调节的影响。方法：选取35名女护士，平均年龄28.7岁（21.0 ~ 37.0岁）。在夜班后的第一天和第二天早上，护士们进行了6MWT。在测试过程中，同时记录心电图（ECG）信号、血压和步行距离。结果：与第2个下班后早晨相比，第1个下班后早晨护士表现出更高的感知运动评分（RPE），更高的Borg量表评分，6MWT前后脉搏率较慢，但步行距离较短。此外，SDNN、RMSSD、pNN50、TP、VLF、LF、HF等HRV指标在轮班后第一个早晨均较高。关于心脏自主神经调节的幅度，RMSSD和pNN50的变化在6MWT的第一个轮班后早晨都更大，尽管6MWT后恢复没有显著差异。结论：夜班似乎增加了护士在轮班后第一个早晨的自主神经系统活动，并在6MWT期间对副交感神经活动产生更大的抑制作用。因此，确保夜班后及时恢复睡眠，提高自主调节能力是非常重要的。关键词：心率变异性；夜班;自主神经系统；六分钟步行测试；护士。试验注册：本研究回顾性注册在Clinicaltrials.gov上。报名日期：2024年8月1日。临床试验：gov ID: NCT06542510。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BMC Nursing Nursing-General Nursing

CiteScore

3.90

自引率

6.20%

发文量

317

审稿时长

30 weeks

期刊介绍： BMC Nursing is an open access, peer-reviewed journal that considers articles on all aspects of nursing research, training, education and practice.