A New Qualitative Typology to Classify Treading Water Movement Patterns

Area of Science:

• Biomechanics
• Motor Control
• Aquatic Sports Science

Background:

• Treading water is a crucial survival skill.
• Existing methods for classifying treading water skills lack detail.
• Objective classification is needed to guide effective instruction.

Purpose of the Study:

• To develop and validate a new qualitative typology for classifying treading water skills.
• To assess the reliability and accuracy of the proposed classification system.
• To provide a tool for distinguishing skill-based behaviors in treading water.

Main Methods:

• Qualitative analysis of 38 participants' treading water movement patterns by biomechanists.
• Development of a five-class coordination typology.
• Training and assessment of 13 sport science students using the typology.
• Application of Generalizability (G) and Decision (D) studies to evaluate reliability.

Main Results:

• A typology of five general coordination classes was established.
• High accuracy (80.1% correct classification) and reliability (Fleiss' Kappa K = 0.6, generalizability φ = 0.99) were demonstrated.
• The typology effectively characterizes treading water behaviors based on force production and limb movement.

Conclusions:

• The proposed typology is an accurate and reliable tool for classifying treading water skills.
• This classification can aid practitioners in identifying skill levels and tailoring aquatic survival instruction.
• The typology provides a framework for understanding and teaching treading water techniques.