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KMID : 0357220150270020081
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Journal of Korean Society Physical Therapy
2015 Volume.27 No. 2 p.81 ~ p.84
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The Comparison of ’Knowledge of Result’ and ’Knowledge of Performance’ in the Children with Cerebral Palsy
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Lee Hye-Young
Lee In-Hee
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Abstract
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Purpose: The purpose of this study was to compare the effect of ‘knowledge of result’ and ‘knowledge of performance’, two types of extrinsic feedbacks, during the sit-to-stand movement in children with hemiplegic cerebral palsy.
Methods: A total of ten children with hemiplegic cerebral palsy (ages 8 to 12 years) were recruited for the study. Subjects with hemiplegic cerebral palsy performed sit-to-stand movement in front of a mirror. Their performance was supervised and revised for normal movement by a pediatric physiotherapist. In the knowledge of the result, subjects performed sit-to-stand using a chair with an armrest in their mind with normal movement. In the knowledge of performance, subjects performed sit-to-stand under verbal instructions. Randomized cross over trials were used in this study. Main outcome measurements were as follows: mediolateral speed, anteroposterior speed, velocity moment, extent in mediolateral direction, extent in anteroposterior direction, and vertical distance of the center of pressure.
Results: The mediolateral speed and extent of center of pressure was higher for ‘knowledge of performance’ in comparison with the other type of extrinsic feedbacks (p<0.05). The other parameters, including anteroposterior speed and extent, and vertical speed of the center of pressure, did not differ between the two types of extrinsic feedbacks (p>0.05).
Conclusion: These findings suggested that training in sit-to-stand movement with ‘knowledge of result’ may result in better use of extrinsic feedback.
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KEYWORD
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Cerebral palsy, Extrinsic feedback, Sit to stand
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