Relationship between split-step timing and leg stiffness in world-class tennis players when returning fast serves

Area of Science:

• Biomechanics
• Motor Control
• Sports Science

Background:

• Split-step timing is crucial for effective serve returns in tennis.
• Understanding the relationship between player biomechanics and perceptual-motor skills is vital for performance optimization.

Purpose of the Study:

• To investigate the split-step timing in elite tennis players returning serves.
• To determine if split-step timing is linked to neuromechanical capabilities.
• To explore how these factors influence anticipatory actions in tennis.

Main Methods:

• Experiment 1: Measured split-step timing in male and female professional (ATP/WTA) and junior (ITF) tennis players returning serves.
• Experiment 2: Assessed neuromechanical capabilities (leg stiffness, vertical jump) in elite and less-skilled players.
• Cross-experiment analysis correlated timing with leg stiffness in elite male players.

Main Results:

• Elite tennis players initiated their split-step around ball-racket contact and landed as early ball-flight information became available.
• Leg stiffness increased with higher levels of tennis expertise.
• A significant correlation (r² = 0.54) was found between initial foot movement timing and leg stiffness in elite male players, with stiffer players initiating later.

Conclusions:

• Elite tennis players' split-step timing is adapted based on their neuromechanical properties.
• Players with greater leg stiffness utilize later timing, maximizing reliance on more definitive visual cues.
• This suggests a sophisticated interplay between physical capacity and perceptual-motor strategy in elite tennis performance.