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Related Concept Videos

Applications of Stress01:04

Applications of Stress

Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
Introduction to Stress and Lifestyle01:27

Introduction to Stress and Lifestyle

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...
Stress Concentrations01:24

Stress Concentrations

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 width...
Stress Concentrations01:13

Stress Concentrations

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 concentration...

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Related Experiment Video

Updated: May 20, 2026

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

Published on: January 22, 2018

Multimodal Personalized Mobile Health Just-in-Time Adaptive Intervention for Occupational Stress Management: Pilot

Beatrix Kunas1, Oliver Jung2, Christoph Schranz2

  • 1Department of Psychology, University of Salzburg, Hellbrunner Str. 34, Salzburg, 5020, Austria, 43 662 8044-5187.

JMIR Mhealth and Uhealth
|May 18, 2026
PubMed
Summary
This summary is machine-generated.

This pilot study explored the RELAX mobile health app for employee stress, finding mixed results in stress reduction and user satisfaction despite improved usability. Further app refinement is needed for practical use.

Keywords:
just-in-time adaptive intervention conceptmHealthmobile healthoccupational stresspersonalized interventionswearables

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Mindfulness in Motion (MIM): An Onsite Mindfulness Based Intervention (MBI) for Chronically High Stress Work Environments to Increase Resiliency and Work Engagement
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Mindfulness in Motion (MIM): An Onsite Mindfulness Based Intervention (MBI) for Chronically High Stress Work Environments to Increase Resiliency and Work Engagement
12:22

Mindfulness in Motion (MIM): An Onsite Mindfulness Based Intervention (MBI) for Chronically High Stress Work Environments to Increase Resiliency and Work Engagement

Published on: July 1, 2015

Area of Science:

  • Digital Health
  • Occupational Health
  • Machine Learning

Background:

  • Growing need for personalized, person-centered stress management tools for employees.
  • Advancements in wearable sensors and machine learning enable real-time stress monitoring and tailored interventions.
  • Limited mobile health (mHealth) interventions utilize just-in-time adaptive interventions (JITAIs) for occupational stress.

Purpose of the Study:

  • Examine preliminary effects of the RELAX mHealth app using a JITAI framework.
  • Assess stress reduction, impact of personalization, and user experience.
  • Investigate the app's potential for managing occupational stress.

Main Methods:

  • Pilot study with 46 employees in a 2-arm randomized trial over 6 weeks.
  • Utilized the RELAX mHealth app with adaptive timing and personalized content.
  • Measured stress via heart rate variability (HRV), subjective questionnaires, and ecological momentary assessment (EMA); evaluated usability and satisfaction.

Main Results:

  • Selected subjective stress indicators and chronic stress decreased; however, HRV LF/HF ratio increased.
  • No significant changes in work-related stress or daily experiences.
  • Usability improved, but user satisfaction showed a downward trend; no differences based on personalization level.

Conclusions:

  • Preliminary indications of stress reduction exist, but outcome variability limits practical utility.
  • Technical issues and user discomfort highlight areas for prototype improvement.
  • Further research and app refinement are necessary to establish the efficacy and usability of JITAI-based mHealth for occupational stress.