body harmonizes these functions to perform smooth and precise actions. Bouisset and Duchêne

steady tension as a fundamental cause of postural sway in an upright stance. Hence, the body's organization during motor activities is

control is influenced by various systems, with fatigue being a noteworthy factor due to its complexity and substantial impact on motor

functions.

exercise

concentrated on reducing the fatigue phenomenon to a simple and widely accepted concept. Who has never heard that lactate acidosis is

the cause of exercise-induced fatigue? Factually, this theory has contributed to slowing down our progress regarding understanding the

fatigue phenomenon. A more embracing model based on feedback – such as the Catastrophe model – or feedforward mechanisms (e.g.,

phenomenon is to distinguish fatigue using the perceived and performance fatigability domains, which refer to the subject’s feelings and

detrimentally impacts individuals' physical and cognitive functions. Given these implications, it is critical to expand our analysis to include

a variety of motor skills. This should involve a thorough investigation into how fatigue influences the dynamic interplay between body

segments, a fundamental aspect of activities ranging from basic gestures to coordinated movements. Thus, the present special issue

aims to advance the knowledge about the fatigue effects in modulating motor skills and muscular responses.

special issue. The contributions offer a panoramic view of fatigue's subtle yet profound influence on motor responses and skills. They

provide invaluable insights for scholars and practitioners, from understanding how fatigue undermines motor efficiency to exploring its

Furthermore, exploring the relationship between hip abductor strength and lower limb stability, as presented by Cemin et al.

valuable layer to our understanding of motor control under the influence of fatigue. This study, along with others in the issue, underscores

the importance of considering physiological differences, such as sex, in the experience and manifestation of fatigue and pain, as

highlighted by the research of Lemos et al.

approaches to patient management, clinical evaluation, and rehabilitation in the face of fatigue and DOMS. Below the main findings of the

studies of this special issue are presented.

features work by Rinaldin et al.

of bi-hemispheric cortical participation in generating reactive postural responses. These findings contribute to the literature by providing

fatigue brings about significant alterations in neuromuscular responses. Considering the complex relationship between fatigue and

article by Teruya et al.

critically evaluates how fatigue influences muscle co-activation in individuals with CAI. It reveals a decrease in

potentially resulting in reduced postural balance

explored the impact of a session of hip abductor resistance exercise until failure on foot kinematics and electromyography amplitude of

stability in the lower extremities. They also provide valuable insights into the role of hip abductor muscles and their influence on lower

between proximal muscle strength and distal limb stability, offering a basis for future studies to investigate further this dynamic and its

pressure pain threshold, is likely attributable to females' heightened sensitivity to the pain threshold rather than the specific exercise

performed. These results significantly affect clinical evaluations and patient management in sports performance and rehabilitation.

knowledge and a window opening toward future possibilities in studying fatigue and motor control. The studies and findings in these

pages invite researchers and practitioners to continue exploring fatigue's role in motor skills and control. Through continued inquiry and

fatigue, ultimately enhancing the efficacy and efficiency of motor responses and skills in various contexts and populations.