Effect of positive acceleration exposure on heart rate variability

Jia ZHAI; Qiuhong LIU; Yongjie YAO

doi:10.16016/j.2097-0927.202309107

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Effect of positive acceleration exposure on heart rate variability

Monographic Reports: Army aviation medicine | 更新时间：2026-01-09

- Effect of positive acceleration exposure on heart rate variability
- Journal of Army Medical University Vol. 46, Issue 1, Pages: 33-38(2024)
- 作者机构：
  
  200433 上海，海军军医大学海军特色医学中心航空医学研究室
- 作者简介：
- 基金信息：
  
  the Project of World-Class Universities (Disciplines) Construction and Characteristic Development Guidance Program(21JX052)
- DOI：10.16016/j.2097-0927.202309107
  CLC： R331.31;R821.3;R852.21
- Received：19 September 2023，
  
  Revised：2023-10-03，
  
  Published：15 January 2024
- 稿件说明：
移动端阅览
Jia ZHAI, Qiuhong LIU, Yongjie YAO. Effect of positive acceleration exposure on heart rate variability[J]. Journal of Army Medical University, 2024, 46(1): 33-38.
DOI：

Jia ZHAI, Qiuhong LIU, Yongjie YAO. Effect of positive acceleration exposure on heart rate variability[J]. Journal of Army Medical University, 2024, 46(1): 33-38. DOI： 10.16016/j.2097-0927.202309107.

摘要

目的

探讨正加速度暴露对心率变异性(heart rate variability，HRV)的影响。

方法

本研究为单臂试验。于2023年7月23-25日，招募同一训练批次、飞行时长>300 h的12名受试者在载人离心机上进行峰值为+3.5、+4.25 Gz，持续时间各10 s的过载暴露，监测并分析受试者在正加速度过载暴露中的心率、呼吸频率、短时程HRV时域及频域指标。

结果

12名受试者在负荷+3.5和+4.25 Gz正加速度暴露条件下：①心率分别为(135.42±14.78)/min和(143.92±14.47)/min，呼吸频率为(23.57±4.09)/min和(26.80±4.71)/min；较暴露前的(97.08±14.61)/min、(14.86±2.06)/min均显著增加(

0.01)。②HRV时域指标“相邻窦性RR间期差值的均方根(root mean square of difference between successive normal RR intervals，RMSSD)”在+3.5、+4.25 Gz过载条件下分别为(7.69±4.32)、(6.84±3.41) ms，与暴露前[(13.14±6.37) ms

]

比较显著降低(

0.05)。③HRV频域指标高频功率(high frequency，HF)分别为(20.53±8.80)和(16.04±7.19) ms

，与暴露前[(44.07±24.67) ms

]

比较显著降低(

0.05)；低频功率(low frequency，LF)在+3.5和+4.25 Gz过载条件下分别为(38.07±19.72) ms

和(42.46±17.08) ms

，与暴露前的(26.33±19.10) ms

比较差异无统计学意义(

＞0.05)；④+3.5和+4.25 Gz暴露时的LF/HF值分别为(4.02±1.52)、(5.32±1.86)，与暴露前的(0.67±0.32)比较均显著增加(

0.05)。

结论

正加速度暴露显著影响心率、呼吸频率、RMSSD、LF/HF和HF等生理指标，提示正加速度暴露导致人体交感神经张力增大，心率变异性显著增加。

Abstract

Objective

To investigate the effect of exposure to positive acceleration on heart rate variability (HRV).

Methods

A single-arm trial was conducted on 12 participants who have a flight duration of >300 h were subjected from a same training batch between July 23 and 25

2023. They were exposed to overloading with a peak value of +3.5 and +4.25 Gz for a duration of 10 s respectively on a manned centrifuge. Heart rate

respiratory rate

and time-domain and frequency-domain indicators of short-term HRV under exposure to overloaded positive acceleration were collected

recorded and analyzed.

Results

Under the overloaded +3.5 and +4.25 Gz positive acceleration for 10 s: ① The heart rate was 135.42±14.78 and 143.92±14.47 beats/min

the respiratory rate was 23.57±4.09 and 26.80±4.71 breaths/min

respectively

and both rates were significantly h

igher than those before exposure (97.08±14.61 beats/min and 14.86±2.06 breaths/min

0.01); ② The time-domain indicator

root mean square of difference between successive normal RR intervals (RMSSD)

was 7.69±4.32 and 6.84±3.41 ms respectively under +3.5 and +4.25 Gz positive acceleration

and both rates were obviously lower than before exposure (13.14±6.37 ms

0.05); ③ The frequency-domain indicator

high frequency (HF) was 20.53±8.80 and 16.04±7.19 ms

respectively

and both were obviously lower than those before exposure of (44.07±24.67 ms

0.05); another frequency-domain indicator

low frequency (LF) was 38.07±19.72 and 42.46±17.08 ms

respectively

but the values had no statistical difference with the value before exposure (26.33±19.10 ms

0.05); ④ The LF/HF ratio of the 2 exposure doses was 4.02±1.52 and 5.32±1.86 respectively after expose

and 0.67±0.32 before exposure

and a significant increase was observed (

0.05).

Conclusion

Positive acceleration exposure significantly affects heart rate

respiratory rate

and HRV time- and frequency-domain indicators RMSSD

LF/HF

and HF. Our results suggest that the exposure leads to increased tone in human sympathetic nerve and significant increment in HRV.

关键词

Keywords

references

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