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相关概念视频

Exercise Stress Test01:26

Exercise Stress Test

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Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
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Physiological Foundation of Stress01:24

Physiological Foundation of Stress

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Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
523
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

502
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
502
Stress Concentrations01:13

Stress Concentrations

574
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
574
Stress Concentrations01:24

Stress Concentrations

601
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
601
Assessment of the Cardiovascular System I: Subjective Data01:23

Assessment of the Cardiovascular System I: Subjective Data

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A thorough health history and physical assessment are essential for identifying cardiovascular disease (CVD) symptoms and distinguishing them from other health issues.
Initial Enquiry
Ask the patient about their primary concern and thoroughly explore all reported symptoms.
Medical History
Investigate past illnesses affecting the cardiovascular system, such as angina, anemia, rheumatic fever, congenital heart disease, stroke, thrombophlebitis, dysrhythmias, varicosities
Inquire about symptoms...
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相关实验视频

Updated: Jan 10, 2026

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students
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Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students

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评估压力水平得分与可穿戴设备驱动的生理测量相比.

Hadar Rosenbach1, Alon Itzkovitch1, Yori Gidron2

  • 1School of Neurobiology, Biochemistry & Biophysics, Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel.

Stress and health : journal of the International Society for the Investigation of Stress
|November 26, 2025
PubMed
概括

这项研究发现,虽然Garmin

关键词:
人权高官,人权高人,人权高人.garmin vivosmart 4 在线购买心率变化的心率变化.心理压力检测 心理压力检测生理信号 生理信号远程传感器远程传感器压力就是压力,压力就是压力.的有效性有效性.可穿戴式传感器传感器在手腕上佩戴的设备.

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A Community-based Stress Management Program: Using Wearable Devices to Assess Whole Body Physiological Responses in Non-laboratory Settings
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A Community-based Stress Management Program: Using Wearable Devices to Assess Whole Body Physiological Responses in Non-laboratory Settings

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Psychophysiological Stress Assessment Using Biofeedback
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Psychophysiological Stress Assessment Using Biofeedback

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相关实验视频

Last Updated: Jan 10, 2026

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12:51

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A Community-based Stress Management Program: Using Wearable Devices to Assess Whole Body Physiological Responses in Non-laboratory Settings
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A Community-based Stress Management Program: Using Wearable Devices to Assess Whole Body Physiological Responses in Non-laboratory Settings

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科学领域:

  • 心理生理学和可穿戴技术
  • 人类应激反应和健康监测

背景情况:

  • 在自然环境中对心理压力的准确评估是很困难的.
  • 像Garmin Vivosmart 4这样的手腕设备提供了远程压力数据收集的潜力.
  • 基于心率变化 (HRV) 的Garmin压力评分 (GSS) 需要用于研究的验证.

研究的目的:

  • 用生理数据和Garmin压力评分来预测自我报告的心理压力.
  • 为了验证Garmin Vivosmart 4压力评分与心电图 (ECG) 衍生的心率 (HR) 和HRV.

主要方法:

  • 一项试点研究随后进行了一项主要研究,共60名参与者.
  • 在休息和精神压力任务期间,从Garmin Vivosmart 4和Polar H10胸同时收集数据.
  • 对Garmin压力评分,HR和HRV指标 (SD2/SD1,RMSSD,HF功率) 与自我报告的压力进行分析.

主要成果:

  • 在压力和休息条件之间,Garmin压力评分,平均HR,SD2/SD1和HF功率有显著差异.
  • 格林压力评分与HR,RMSSD和SD2/SD1.1有显著的相关性.
  • 心率与自我报告的压力有着最强的关联;Garmin压力评分具有边际预测价值.

结论:

  • 加敏压力评分和心率都表明了心理压力.
  • 生理应激反应可能受到性别和强度HRV的影响.
  • 嘉设备的可访问性和非侵入性支持其在各种研究应用中的潜力.