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KMID : 0357220120240010001
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Journal of Korean Society Physical Therapy
2012 Volume.24 No. 1 p.1 ~ p.6
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Effect of Abdominal Muscle Activity in Combination with the Abdominal Drawing-in Maneuver for Grip Strength in Healthy Young Adults
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Lee Mi-Young
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Abstract
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Purpose: The grip strength is influenced by various factors, such as position of the upper extremity, characteristics of the hand, and general physical condition. In this study, we investigated whether abdominal muscle activity in combination with the abdominal drawing-in maneuver has any effect on the grip strength in healthy young adults.
Methods: This study included 31 healthy subjects (16 males, 15 females). We used surface electromyography and pressure bio-feedback unit for this experiment. All Subjects were placed in a cock-lying position with comfort and the grip strength was measured. On the following day, the pressure bio-feedback unit was placed beneath their fifth lumbar vertebra, and the, grip strength was measured again. This time, the measurement was taken while drawing-in their abdomen below the navel gently and gradually, while maintaining a neutral pelvic position.
Results: The grip strength was significantly increased when subjects performed the drawing-in maneuver than when they were comfortable (p<0.05). In addition, activations of the rectus abdominal muscles significantly increased (p<0.05).
Conclusion: In the current study, we found that abdominal muscle activity, in combination with the abdominal drawing-in maneuver, affected the grip strength, positively. Therefore, we suggest that this result should be considered when evaluating the grip strength.
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KEYWORD
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Abdominal drawing-in maneuver, Grip strength, Pressure Bio-feedback unit
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