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Related Concept Videos

Stress and Mental Health01:30

Stress and Mental Health

Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Psychological Responses to Stress01:20

Psychological Responses to Stress

Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
Physiological Foundation of Stress01:24

Physiological Foundation of Stress

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...
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...
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...
Components of Stress01:23

Components of Stress

Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and opposite to those on the...

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A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
06:15

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Published on: July 10, 2017

Stress and cognitive function in Latino farmworkers.

Ha T Nguyen1, Sara A Quandt, Joseph G Grzywacz

  • 1Department of Family and Community Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA. hnguyen@wfubmc.edu

American Journal of Industrial Medicine
|March 21, 2012
PubMed
Summary

Job stress negatively impacts farmworkers' cognitive function. Higher baseline stress was linked to a greater decline in cognitive abilities over time, highlighting occupational health concerns.

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Area of Science:

  • Occupational Health
  • Cognitive Science
  • Agricultural Medicine

Background:

  • Job stress is a known factor affecting cognitive function, yet it is often neglected in farmworker occupational health.
  • This study investigates the link between job stress and cognitive function changes in Latino farmworkers.

Purpose of the Study:

  • To examine the relationship between baseline stress and cognitive function.
  • To assess how changes in stress levels correlate with changes in cognitive function over a 3-month period.
  • To identify the impact of occupational stress on the cognitive health of farmworkers.

Main Methods:

  • Prospective study design with data collection at baseline and 3-month follow-up.
  • Linear regression models were employed for data analysis.
  • Potential confounders such as demographics, health status, and lifestyle factors were adjusted for.

Main Results:

  • A significant negative correlation was found between baseline stress and baseline cognitive function (r = -0.27, P < 0.001).
  • Increased baseline stress was associated with a greater decline in cognitive function after adjusting for confounders (P = 0.024).
  • No significant association was observed between short-term changes in stress and cognitive changes in the study cohort.

Conclusions:

  • Occupational stress is a significant risk factor for diminished cognitive function among farmworkers.
  • Findings suggest implications for healthcare provision and work organization to mitigate stress and support cognitive health in this population.