Integrated Analysis of Young Swimmers' Sprint Performance

Area of Science:

• Sports Science
• Biomechanics
• Human Movement Analysis

Background:

• Understanding sex-based and skill-based performance differences in youth swimming is crucial for targeted training.
• Previous research has identified various factors influencing swimming performance, but a comprehensive analysis in young swimmers is needed.

Purpose of the Study:

• To analyze the influence of sex and skill level on performance variables in young swimmers.
• To identify key biomechanical predictors of swimming performance in different sexes.

Main Methods:

• 23 boys and 26 girls (mean age 15.7 and 14.5 years) were assessed for anthropometry, flexibility, strength, drag, coordination, and biomechanics.
• Kinematics were captured using Qualisys cameras during a 50-m maximal front-crawl. Drag and tethered swimming force were measured using a load cell.
• Multivariate analysis of variance (MANOVA) and multiple linear regression were employed to analyze the data.

Main Results:

• Significant differences between skill levels were observed in speed, stroke frequency, stroke index, and intracyclic velocity variations.
• Most significant differences were found between sexes, particularly in anthropometrics, shoulder flexibility, speed, stroke frequency, stroke length, drag, mechanical power, and force.
• Male swimmers' performance was predictable using multiple linear regression, with stroke index, left shoulder flexion, and intracycle velocity variations being key predictors.

Conclusions:

• Sex is a more significant differentiator of performance than skill level in young swimmers.
• Specific biomechanical and anthropometric variables are critical for optimizing performance, especially in male swimmers.
• These findings can inform sex-specific training programs to enhance youth swimming performance.