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  1. 1 Human Movement

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  1. 1 2010

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  1. 1 Hamar D.

  2. 1 Zemková E.

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The Effect of Task-Oriented Sensorimotor Exercise on Visual Feedback Control of Body Position and Body Balance

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Zemková E., Hamar D.
Human Movement
|
2010
|
vol. 11
|
issue 2
119-123
EN
Purpose. The study evaluates the effect of task-oriented sensorimotor exercise on visual feedback control of body position and parameters of static and dynamic balance. Basic procedures. A group of 20 PE students (aged 21.5 ± 1.6 years, height 178.2 ± 10.6 cm, and weight 74.5 ± 11.8 kg) performed task-oriented sensorimotor exercise (20 sets of 60 stimuli with 2 min rest in-between). They had to hit the target randomly appearing in one of the corners of the screen by horizontal shifting of COM in appropriate direction. Response time, distance, and velocity of COP trajectory were registered during standing on unstable spring-supported platform equipped with PC system for feedback monitoring of COM movement. Postural stability was evaluated under both static and dynamic conditions (wobble board). The COP velocity was registered at 100 Hz by means of the posturography system FiTRO Sway Check based on dynamometric platform. Main findings. Mean response time significantly (p ≤ 0.01) decreased from 3100.5 ± 1019.8 ms to 1745.8 ± 584.5 ms. Substantial share of the improvements took place during initial 6 trials. At the same time also mean distance of COP movement significantly (p ≤ 0.05) decreased from 0.767 ± 0.340 m to 0.492 ± 0.190 m within initial 12 trials and then slightly increased up to 0.591 ± 0.247 m. On the other hand, mean COP velocity significantly (p ≤ 0.05) increased from 0.285 ± 0.142 m/s to 0.395 ± 0.182 m/s. However, there were no changes in the COP velocity registered in static (from 12.4 ± 1.8 mm/s to 11.9 ± 1.5 mm/s) and dynamic conditions (from 108.0 ± 22.3 mm/s to 101.3 ± 18.1 mm/s). Conclusions. Task-oriented sensorimotor exercise acutely enhances visual feedback control of body position but not static and dynamic balance.
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