Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Compensation Mechanisms

Compensation Mechanisms

The human body employs intricate mechanisms to counteract changes in blood pH, preventing conditions like acidosis (pH < 7.35) and alkalosis (pH > 7.45). These compensatory responses aim to restore normal arterial blood pH by engaging respiratory or renal systems, depending on the source of the imbalance.
Respiratory Compensation
This mechanism addresses metabolic-induced pH imbalances by adjusting breathing rates. Respiratory compensation begins within minutes of detecting a pH...

Impact

Impact

Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...

Types of Impact

Types of Impact

Impacts can be classified in various forms, primarily under two subgroups: central impact and oblique impact. A central impact occurs when two objects collide head-on, possessing opposite velocities aligned along the line of impact. Conversely, an oblique impact occurs when two objects collide at an angle, resulting in a modification of both direction and velocity.
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...

Spinal Cord Injury ll: Pathophysiology

Spinal Cord Injury ll: Pathophysiology

Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...

Fundamental Attribution Error

Fundamental Attribution Error

According to some social psychologists, people tend to overemphasize internal factors as explanations—or attributions—for the behavior of other people. They tend to assume that the behavior of another person is a trait of that person, and to underestimate the power of the situation on the behavior of others. They tend to fail to recognize when the behavior of another is due to situational variables, and thus to the person’s state. This erroneous assumption is called the fundamental attribution...

Secondary Spinal Cord Injury llI: Pathophysiology

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Measuring and valuing spillover effects in caregivers and families: A scoping review.

PloS one·2026

Same author

Generational Differences in Age-Specific Dementia Prevalence Rates.

JAMA network open·2025

Same author

Health-related quality of life in the UK Biobank Experience of Pain follow-up study: a comparison with general population norms.

American journal of epidemiology·2025

Same author

Compliance with clinical guidelines: the role of incentives and competition between practitioners.

The European journal of health economics : HEPAC : health economics in prevention and care·2025

Same author

Economic Optimization Through Adherence to Best Practice Guidelines: A Decision Analysis of Traumatic Spinal Cord Injury Care Pathways in Australia.

Journal of neurotrauma·2025

Same author

Change in Dental Visits Among Eligible Children Under the Impact of the Child Dental Benefits Schedule in Australia.

Community dentistry and oral epidemiology·2025

Search research articles

Related Experiment Video

Updated: May 28, 2026

A Contusive Model of Unilateral Cervical Spinal Cord Injury Using the Infinite Horizon Impactor

A Contusive Model of Unilateral Cervical Spinal Cord Injury Using the Infinite Horizon Impactor

Published on: July 24, 2012

Whiplash and the compensation hypothesis.

Natalie M Spearing¹, Luke B Connelly

¹Australian Centre for Economic Research on Health, The University of Queensland, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia. nataliespearing@hotmail.com

|October 25, 2011

Summary

The link between compensation and poor health outcomes, particularly in whiplash injuries, is not clearly established due to significant methodological biases in current research. Future studies need robust methods to determine causality.

More Related Videos

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

Related Experiment Videos

Last Updated: May 28, 2026

A Contusive Model of Unilateral Cervical Spinal Cord Injury Using the Infinite Horizon Impactor

A Contusive Model of Unilateral Cervical Spinal Cord Injury Using the Infinite Horizon Impactor

Published on: July 24, 2012

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

Area of Science:

Medical research methodology
Health economics
Injury outcomes

Background:

The "compensation hypothesis" suggests compensation influences health outcomes, but this is debated.
Empirical evidence is confounded by unresolved biases.
Findings impact the design of compensation schemes.

Purpose of the Study:

Critically evaluate the evidence linking compensation factors to adverse health outcomes.
Examine the "compensation hypothesis" specifically for whiplash injuries.
Identify methodological limitations in existing studies.

Main Methods:

Review article analyzing existing literature on compensation and health.
Focus on studies related to whiplash injuries.
Outline methodological challenges in testing the compensation hypothesis.

Main Results:

Compensation studies suffer from measurement, reverse causation, and selection biases.
Bias sources include unclear measurement units, latent injury nature, and unaddressed confounding.
The causal direction between compensation and poor health remains ambiguous.

Conclusions:

The relationship between compensation and health outcomes is currently unclear.
Existing study designs are compromised by significant biases.
Future research requires methods to establish causality between compensation and prolonged symptoms.