Sport Skill-Specific Expertise Biases Sensory Integration for Spatial Referencing and Postural Control

Area of Science:

• Neuroscience
• Sports Science
• Biomechanics

Background:

• Postural control relies on integrating sensory information from vision, proprioception, and vestibular systems.
• Sport expertise may alter how individuals prioritize and reweight these sensory inputs for maintaining balance.

Purpose of the Study:

• To investigate how sport expertise affects visual field dependence and sensory reweighting in postural control.
• To compare these effects between soccer athletes, ballet dancers, and nonathletes.

Main Methods:

• Participants completed the Rod and Frame test to assess visual field dependence.
• A bipedal stance task involved sequential or concurrent disruption of vision and proprioception.
• Postural adaptation was measured using center of pressure (COP) displacement, COP velocity, and ankle muscle electromyography (EMG).

Main Results:

• Soccer athletes exhibited greater visual field dependence compared to nonathletes.
• Ballet dancers were more destabilized by proprioceptive vibration and showed slower sensory reweighting than other groups.
• Sport-specific differences were observed in sensory reweighting strategies for spatial orientation and posture.

Conclusions:

• Sport expertise significantly modulates sensory reweighting and visual field dependence for postural control.
• Distinct sensory processing biases exist in athletes based on their specific sport discipline.
• These findings highlight the adaptability of the sensorimotor system to sport-specific demands.