Related Experiment Video
Updated: Mar 25, 2026

06:14
In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
7.0K
Hydration: The New FIFA World Cup's Challenge for Referee Decision Making?
Mohamed Houssein1,2, Philippe Lopes3, Bruno Fagnoni1
1Laboratoire de Recherche Adaptations Physiologiques à l'Exercice et Réadaptation à l'Effort, Université de Picardie Jules Verne, Amiens, France;
Journal of Athletic Training
|February 17, 2016
Summary
Referees experiencing mild dehydration (2.0%) during sports events showed reduced physical and cognitive performance. Proper hydration is crucial for referees to minimize errors and misjudgments, especially in warm conditions.
Area of Science:
- Sports Science
- Environmental Physiology
- Human Performance
Background:
- Team sports referees officiate in diverse environmental conditions.
- Research extensively covers heat's impact on athletes, but less on referees.
- Heat stress can impair physiological and cognitive functions.
Purpose of the Study:
- To investigate the effect of heat exposure on team sports referees' performance.
- To understand the relationship between hydration status and referee performance in thermoneutral conditions.
- To highlight the importance of hydration for accurate officiating.
Main Methods:
- Monitoring referees during continental sporting events.
- Assessing hydration status through physiological measurements.
- Evaluating physical, psychomotor, and cognitive performance metrics.
Main Results:
- Mild dehydration (2.0%) was observed in referees during physical activity in thermoneutral environments.
- Dehydration correlated with significant reductions in physical, psychomotor, and cognitive performances.
- These impairments can lead to increased officiating errors.
Conclusions:
- Hydration status significantly impacts referees' performance.
- Maintaining optimal hydration is essential for referees to reduce errors and misjudgments.
- Further research should focus on heat's specific effects on refereeing in competitive environments.
Related Concept Videos
Social Facilitation
36.7K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
36.7K
Types of Impact
1.1K
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...
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...
1.1K
Halo Effect
643
The halo effect is a cognitive bias in which an individual's overall impression influences judgments about their specific traits. This psychological phenomenon leads people to associate positive characteristics with those they perceive as generally good and negative characteristics with those they view as bad. This effect is particularly influential in social perception, professional evaluations, and decision-making processes.The Psychological Basis of the Halo EffectThe halo effect is rooted...
643
Impact Strength of Concrete
694
Impact strength in concrete is a critical measure that reflects the material's capability to endure the forces applied during pile driving and when supporting machinery foundations that experience impulsive loads. It is also essential when handling precast concrete components to prevent accidental damage. The impact strength is assessed by observing the concrete's resistance to repeated impacts and energy absorption capacity. A key indicator of significant damage to concrete is when it...
694
Impact
590
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...
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...
590
Self-Regulation
312
Self-regulation, also known as self-control, encompasses a range of cognitive and behavioral processes that allow individuals to adjust their internal states and outward actions to align with socially acceptable norms and long-term goals. It plays a fundamental role in adaptive functioning, from resisting impulsive behaviors to persisting through challenging tasks. While its benefits are widely recognized, self-regulation is not limitless. Muraven and Baumeister's theory posits that...
312

