手臂振动 30 分钟即可测出神经变化：《科学报告》25 名建筑工人完成 12 种组合场景、振动频率对神经传导速度影响最大
一项 2026 年 11 月 11 日刊于《科学报告》的实验研究检视了手臂振动对神经功能的影响。手臂振动是与神经和感觉障碍相关的职业危害。这项受试者内设计研究由哈马丹医科大学的 Aghazadeh 等人完成，25 名建筑工人共完成 12 种场景组合，每种场景用手臂振动模拟器暴露 30 分钟。
场景构成方面，加速度固定为 10 米每二次方秒，两个振动频率为 31.5 赫兹与 63 赫兹，两个环境温度为 5 摄氏度与 25 摄氏度，三种腕部姿势为中立、屈曲与伸展。研究测量两项指标：触觉感觉阈值与正中神经运动神经传导速度。
结果显示，全部场景都使运动神经传导速度下降、触觉阈值上升。传导速度下降最大出现在 31.5 赫兹、5 摄氏度、腕部屈曲组合，降幅为 2.780 米每秒，标准差 0.465；触觉阈值上升最大出现在 63 赫兹、5 摄氏度、腕部屈曲或伸展组合，增幅为 0.533 克，标准差 0.467。
统计方面，触觉阈值的三个主效应均显著：频率与温度的 p 值均小于 0.001，腕部姿势的 p 值为 0.010；传导速度的三个主效应 p 值均小于 0.001。温度对触觉阈值的影响最大，偏 eta 平方为 0.307；频率对传导速度的影响最大，偏 eta 平方为 0.606；三因素之间未检出统计显著的交互作用。作者指出，屈曲姿势下的神经感觉变化总体大于中立姿势。论文数字识别码为 10.1038/s41598-026-79492-0。
Thirty Minutes of Hand-Arm Vibration Produces Measurable Nerve Changes: 25 Construction Workers Completed 12 Scenario Combinations, with Frequency the Largest Factor for Nerve Conduction Velocity, in Scientific Reports
An experimental study published in Scientific Reports on November 11, 2026 examined the neurological effects of hand-arm vibration, an occupational hazard associated with neurological and sensory disturbances. In the within-subject study by Aghazadeh and colleagues at Hamadan University of Medical Sciences, 25 construction workers completed 12 scenarios, each involving 30 minutes of exposure using a hand-arm vibration simulator.
The scenarios combined an acceleration of 10 meters per second squared, two vibration frequencies of 31.5 and 63 hertz, two ambient temperatures of 5 and 25 degrees Celsius, and three wrist postures of neutral, flexion and extension. The study measured tactile sensory threshold and median motor nerve conduction velocity.
All scenarios produced reduced conduction velocity and increased tactile threshold. The greatest reduction in conduction velocity occurred at 31.5 hertz, 5 degrees Celsius and wrist flexion, at 2.780 meters per second with a standard deviation of 0.465. The largest increase in tactile threshold occurred at 63 hertz, 5 degrees Celsius, with wrist flexion or extension, at 0.533 grams with a standard deviation of 0.467.
For tactile threshold, significant main effects were observed for vibration frequency and ambient temperature, both at p below 0.001, and for wrist posture at p of 0.010. For conduction velocity, all three main effects were at p below 0.001. Temperature had the largest effect on tactile threshold, with a partial eta squared of 0.307, while frequency had the largest effect on conduction velocity, with a partial eta squared of 0.606. No statistically significant interactions between the three factors were observed, and flexion was generally associated with greater neuro-sensory changes than the neutral posture. The paper carries DOI 10.1038/s41598-026-79492-0. All details follow the abstract and text of the Scientific Reports paper.
来源：《科学报告》
发布：GSM·美国（发布链接）
图片来源：图：一名工人手持风镐作业，图中是手持振动工具作业的实物照片，为手臂振动研究题材通用配图，非研究实验现场。照片：W.carter 摄，CC BY-SA 4.0，经 Wikimedia Commons。
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