Muscular Fatigue vs. Mental Fatigue on Balance, Proprioception and Reaction Time

This study aims to understand how different types of fatigue affect balance and reactiontime, proprioception, and fine motor in healthy young adults. Fatigue is a commonexperience in daily life and can arise from physical activity or prolonged mental effort.The study seeks to determine whether fatigue of the upper body, lower body, or mentalfatigue from cognitively demanding tasks can negatively affect balance and reaction time,proprioception, and fine motor abilities.To examine this, participants will undergo controlled fatigue protocols designed to tirespecific parts of the body or the mind. the Upper body fatigue will be induced throughrepeated maximal push‐up sets performed until the participant can no longer maintainproper form. Lower body fatigue will be created through repeated maximal 1‐minute squatjump sets, with participants touching a low box to ensure standardized depth and propermovement. Mental fatigue will be induced using a 20‐minute computer‐based cognitive taskthat alternates between the 2‐back working memory task and the numerical Stroop task.These tasks are designed to require continuous attention, mental effort, and inhibitorycontrol. Each type of fatigue will be induced independently, and participants'performance will be measured before and after each fatigue protocol.Following fatigue induction, participants will complete a series of tests designed toassess balance and reaction time, proprioception, and fine motor abilities. This includesboth static and dynamic postural tasks, as well as reaction time and proprioceptiveaccuracy assessments. By evaluating these measures before and after fatigue, the studywill determine how different forms of physical and mental fatigue impact posturalstability, sensory processing, and precise motor control.The study addresses the question: "Do upper body fatigue, lower body fatigue, or mentalfatigue reduce balance and reaction time, proprioception, and fine motor performance inhealthy young adults?" The hypothesis is that each form of fatigue upper body, lowerbody, or mental‐will meaningfully impair balance and reaction time, proprioception, andfine motor performance compared to non‐fatigued conditions.