This study examines how repetitive movement-induced fatigue affects biomechanical coordination and variability in overhead athletes with and without chronic shoulder pain.
The study investigates the effects of fatigue on kinematic changes and movement variability during repetitive tasks among athletes, focusing on differences between those with chronic shoulder pain (CSP) and those without.
The research was conducted by Sheikhhoseini, Abdollahi, Salsali, and others on 24 male overhead athletes divided evenly between groups with and without CSP.
The experiment took place and was reported on January 25, 2023, with publication details referencing findings from the study published on January 25, 2025.
The study was conducted at Allameh Tabataba’i University, Tehran, Iran, and involved various kinematic and electromyographic methods for data collection.
The research aims to fill significant gaps concerning the interplay between chronic shoulder pain, fatigue, and motor performance, emphasizing the biomechanics of upper limb function.
Biomechanical and electromyographic data were collected using kinematic motion analysis and electromyography during repetitive reaching tasks.
Chronic Shoulder Pain (CSP) can lead to compensatory movement strategies to minimize discomfort, affecting both the performance and biomechanical stability of athletes.
The CSP group primarily focused on controlling the shoulder joint, whereas the CON group utilized both the shoulder and elbow joints.
Our study’s findings reveal different movement strategies employed by athletes with chronic pain compared to their non-pained counterparts.
Fatigue-induced changes have significant kinematic effects during performance, impacting coordination and muscle activation variability.
Present the significance of fatigue on movement variability and coordination among overhead athletes, introducing the study's aim and background on chronic shoulder pain.
Discuss the prevalence of chronic shoulder pain among athletes, explore relevant literature on repetitive movement disorders (RMDs), and justify the need for this study.
Detail the experimental setup, including participant selection, tasks performed, and specific techniques used for data collection and analysis.
Highlight the study's primary results, emphasizing significant distinctions between the CSP and CON groups, alongside notable changes post-fatigue and their implications for athletic performance and rehabilitation.
Summarize the key findings, reflecting on the significance of altered movement strategies due to fatigue and chronic pain, and suggest future research directions to explore these dynamics more comprehensively.