Differences in Strength, Speed, and Power Performance Between Visually Impaired Paralympic and Olympic Sprinters

Area of Science:

• Sports Science
• Biomechanics
• Human Performance

Background:

• Elite sprinters' physical capabilities are crucial for performance.
• Understanding differences between able-bodied and visually impaired athletes informs training strategies.

Purpose of the Study:

• To compare the strength, speed, and power performance of elite able-bodied sprinters and Paralympic sprinters with visual impairment.
• To identify performance disparities across different movement velocities and exercise types.

Main Methods:

• Involved 12 elite able-bodied sprinters and 15 Paralympic sprinters with visual impairment.
• Assessed performance in squat jumps, countermovement jumps, half-squat, jump-squat exercises, and 60-m sprints.
• Utilized independent t-tests to analyze differences between the groups.

Main Results:

• Able-bodied sprinters demonstrated significantly superior performance in all assessed tests compared to visually impaired sprinters (effect sizes 1.29–9.04, P < .001).
• Larger differences were observed in low-velocity, high-force exercises like the half-squat (∼32%) and vertical jumps (∼20%).
• Smaller differences were noted in linear sprint performance (∼8%–11%).

Conclusions:

• Performance differences between the groups were most pronounced in low-velocity exercises, indicating a potential deficit in force application at these speeds for visually impaired sprinters.
• The findings suggest that enhancing strength capacity, particularly for force application at lower movement velocities, could significantly improve sprint performance in Paralympic athletes with visual impairment, especially during the acceleration phase.