Evidence map›Paper›PMID 40177364›Full record

ArticleFrontiers in physiology2025

Analysis of changes in heart rate variability after prolonged ultra-high plateau residence in young healthy population: a cross-sectional study.

Hongyang Zhang, Hao Liu, Meiting Gong, Xianglin Ye, Peng Wang, Meiling Li, Haixia Yang, Haifeng Pei

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Article in Frontiers in physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Hongyang Zhang *Department of Cardiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China.
Hao Liu *Department of Cardiology, The General Hospital of Western Theater Command, Chengdu, China.
Meiting Gong *School of Clinical Medicine, Southwest Jiaotong University, Chengdu, China.
Xianglin YeDepartment of Cardiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China.
Peng WangDepartment of Cardiology, The General Hospital of Western Theater Command, Chengdu, China.
Meiling LiDepartment of Cardiology, The General Hospital of Western Theater Command, Chengdu, China.
Haixia YangDepartment of Pediatrics, The General Hospital of Western Theater Command, Chengdu, China.
Haifeng PeiDepartment of Cardiology, The Affiliated Hospital, Southwest Medical University, Luzhou, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: This study aims to investigate changes in the autonomic nervous system (ANS) by analyzing the characteristics of heart rate variability (HRV). Methods: A portable 3-lead dynamic electrocardiogram monitoring device was used to collect HRV data from the participants. Based on the inclusion and exclusion criteria, a total of 52 volunteers from the Xinjiang Hetian area (ultra-high plateau group, approximately 5300 m altitude) and 56 volunteers from the Sichuan Chengdu area (plain group, approximately 500 m altitude) were enrolled for the 24-hour long-term HRV data collection. A cross-sectional comparison was made between the groups in terms of various HRV time-domain, frequency-domain, and nonlinear indices. The diurnal and nocturnal variations in HRV and ANS after prolonged residence in the ultra-high plateau were further explored by dividing the day into daytime and nighttime periods and calculating the ΔHRV values. Additionally, the participants' heart rate and sleep conditions were analyzed. Results: Compared to the plain group, the ultra-high plateau group showed a significant reduction in overall HRV, with decreased indices of vagal activity (RMSSD, NN50, pNN50, HF, HF norm, and SD1) and increased indices of sympathetic activity (LF norm). The ANS balance indices were increased (LF/HF) and decreased (SD1/SD2), respectively. More importantly, although the diurnal and nocturnal trends of various HRV indices in the ultra-high plateau group were consistent with the plain group, the △HRV value analysis indicated that the ultra-high plateau group had increased △LF (95% CI: 10.20 to 271.60, Conclusion: Prolonged residence in the ultra-high plateau reduces HRV, cardiac reserve capacity, and sleep quality in healthy young adults, diminishes the diurnal recovery capacity of the vagal nerve, and leads to a shift in ANS balance towards reduced vagal activity and enhanced sympathetic activity.

Indexed as

autonomic nervous systemheart rateheart rate variabilitysleepultra-high plateau

Identifiers

PMID40177364
PMCPMC11961873

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.