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Do Impairments in Visual Functions Affect Skiing Performance?

Amritha Stalin1, Marieke Creese1, Kristine Nicole Dalton1

  • 1School of Optometry & Vision Science, University of Waterloo, Waterloo, ON, Canada.

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|May 31, 2021
PubMed
Summary
This summary is machine-generated.

This study found that static visual acuity and visual field extent are key predictors of skiing performance in Para nordic and alpine athletes. While contrast sensitivity was also assessed, its relationship with performance may have been masked by its strong correlation with visual acuity.

Keywords:
Paralympic alpine skiingParalympic nordic skiingcontrast sensitivityvisual acuityvisual field

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Area of Science:

  • Ophthalmology and Sports Science
  • Visual Performance in Adaptive Sports

Background:

  • Skiing requires complex visual processing for navigation and performance.
  • Visual functions like contrast sensitivity (CS), visual acuity (VA), and visual field (VF) are crucial for skiers, especially those with vision impairments.

Purpose of the Study:

  • To investigate the predictive relationship between various visual functions and skiing performance in elite Para nordic and Para alpine skiers.
  • To determine which visual parameters are most relevant for classifying skiers with vision impairments.

Main Methods:

  • Prospective observational study involving 26 Para nordic and 15 Para alpine skiers.
  • Assessment of static VA, dynamic VA, CS, light sensitivity, glare sensitivity, glare recovery, motion perception, and VF.
  • Correlation and regression analyses comparing visual function data with raw race times.

Main Results:

  • Static VA and VF showed initial correlations with skiing performance, particularly in Para alpine disciplines.
  • Static VA was a significant predictor for giant slalom, super G, and slalom performance.
  • After Bonferroni-Holm correction, no visual variables showed significant correlation with performance, but strong correlations between static VA and CS were noted.

Conclusions:

  • Static visual acuity and visual field extent are associated with skiing performance in Para nordic and alpine athletes.
  • These visual parameters should be considered for Para nordic and Para alpine classifications.
  • The high correlation between static VA and CS might obscure the independent contribution of CS to skiing performance.