Intra-individual movement variability during skill transitions: a useful marker?

Area of Science:

• Sports Science
• Motor Control
• Skill Acquisition

Background:

• Athletes and coaches face challenges in determining the optimal level of conscious attention for movement execution.
• Skill refinement, especially during transitional phases, requires careful management of attentional focus.
• Understanding the interplay between movement variability and mental effort is crucial for effective technical coaching.

Purpose of the Study:

• To explore movement variability as a tool for informing coaching decisions during technical skill refinement.
• To investigate the relationship between movement variability, mental effort, and automaticity in athletes.
• To provide a framework for evaluating automaticity during skill transitions using objective measures.

Main Methods:

• Analysis of movement variability and co-variability in mechanical degrees-of-freedom.
• Examination of mental effort directed towards specific skill components (target variables) versus non-target variables.
• Exemplar data collection and analysis from golf skill refinement.

Main Results:

• Movement variability decreased when mental effort was high on a target variable during skill refinement.
• Conversely, movement variability increased for non-target variables when focus was on a specific skill component.
• A link was established between reduced movement variability and increased mental effort on the target skill aspect.

Conclusions:

• Movement variability and mental effort can serve as indicators for evaluating the automaticity of refined skills.
• Coaches can utilize these measures to guide intervention strategies during different stages of skill development.
• This approach offers a systematic method for assessing and optimizing technical refinement in athletes.