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The continuous nature of timing reprogramming in an interceptive task.
Luis Augusto Teixeira1, Elke Dos Santos Lima, Mariana Marília Franzoni
1School of Physical Education and Sport, University of São Paulo, Av. Prof Mello Moraes 65, São Paulo, SP 05508-900, Brazil. lateixei@usp.br
Journal of Sports Sciences
|October 1, 2005
Summary
Movement timing reprogramming involves early, stereotyped adjustments and later feedback-based corrections. Temporal accuracy improves with more time, but specific practice does not enhance this timing adjustment process.
Area of Science:
- Motor control and biomechanics
- Human movement science
- Cognitive neuroscience
Background:
- Understanding movement timing reprogramming is crucial for interceptive actions.
- The ability to adjust movements in response to changing target dynamics is key.
Purpose of the Study:
- To investigate the time course of movement timing reprogramming.
- To examine the impact of different times-to-arrival after velocity increment (TAVIs) on movement adjustments.
- To assess the effect of skill training on temporal accuracy.
Main Methods:
- Participants performed a forehand drive task synchronized with a moving target.
- Target velocity was altered mid-flight, creating varying TAVIs (100-600 ms).
- Movement timing and accuracy were analyzed across different TAVI conditions and after skill training.
Main Results:
- Early adjustments (100-200 ms TAVI) were stereotyped.
- Feedback-based corrections occurred at TAVIs of 300 ms and longer.
- Temporal accuracy increased with longer TAVIs up to 600 ms.
- Skill training improved overall temporal accuracy but did not specifically enhance reprogramming.
Conclusions:
- Movement timing reprogramming is a continuous process influenced by intrinsic factors like adjustment latency and reprogramming rate.
- Effective adjustments rely on sufficient time for feedback processing.
- While general skill improves performance, specific practice may not alter the fundamental reprogramming mechanisms.