Activation of Abdominal Muscles during Abdominal Hollowing in Four Different Positions

Park, Du-Jin; Lee, Hyunok

doi:10.1589/jpts.22.203

Cited by 11 publications

(8 citation statements)

References 28 publications

(46 reference statements)

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“…The wall support standing showed the smallest increase of TrA thickness in the experimental group. The reason for this difference seems to be that the wall support standing position in Mew's study had a narrower, more unstable base than the wall support standing position in the present study, and Mew's study used the modified AHE of Critchley 29) that also contracts the pelvic floor. Thus, the TrA activity increased more in his study than in the wall support standing of the present study, which decreased the role of the other two muscles in supporting and maintaining the positions.…”

Section: Table1mentioning

confidence: 61%

The Use of Rehabilitative Ultrasound Imaging for Feedback from the Abdominal Muscles during Abdominal Hollowing in Different Positions

Park

Lee

2011

J Phys Ther Sci

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Abstract. [Purpose] This study was conducted to investigate the effects of rehabilitative ultrasound imaging (RUSI) feedback during the abdominal hollowing exercise (AHE) in three different positions by monitoring the changes in the thicknesses of the abdominal muscles.[Subjects] The subjects of this study were 42 healthy male adults who listened to an explanation of the study method and purpose and agreed to participate in the experiments. They were divided into an experimental group of 21 subjects who received RUSI feedback and a control group of 21 subjects who did not receive RUSI feedback.[Methods] The thickness of the abdominal muscles was measured during rest and AHE in three positions. The thickness changes between rest and AHE were compared between the two groups.[Results] The difference in internal abdominal oblique (IO) thickness changes between the groups were significant. The differences in external abdominal oblique (EO) thickness changes were only significant among the positions. A post hoc analysis of the differences in EO thickness changes among the positions found significant differences between the crook lying and four-point kneeling positions. The transversus abdominis (TrA) thickness changes showed significant interaction between group and position. [Conclusion] RUSI feedback assists the independent activities of TrA by decreasing the thickness changes of global muscles such as IO and EO. Furthermore, crook lying is a more effective position in AH training with RUSI feedback than the other two positions as it increases TrA thickness changes while minimizing those of EO.

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Section: Table1mentioning

confidence: 61%

The Use of Rehabilitative Ultrasound Imaging for Feedback from the Abdominal Muscles during Abdominal Hollowing in Different Positions

Park

Lee

2011

J Phys Ther Sci

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“…Rackwitz et al14 ) asserted that selective contraction of the musculus transversus abdominis muscle was necessary to heighten therapeutic performance, but the muscle is difficult to contract selectively15 ) . The musculus transversus abdominis muscle became thicker not only in the BTG but also in the PBUG and RUSIG.…”

Section: Discussionmentioning

confidence: 99%

Comparison of abdominal muscle thickness according to feedback method used during abdominal hollowing exercise

2016

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[Purpose] This study was intended to examine the most effective feedback method for contracting the musculus transversus abdominis muscle by using basic training, a pressure biofeedback unit, and real-time ultrasonographic imaging during abdominal hollowing exercise training. [Subjects and Methods] The subjects in this study were 30 healthy young students in their twenties. Thirty subjects were divided randomly and equally into the basic training, the pressure biofeedback unit, and real-time ultrasonographic imaging groups. All of the subjects received abdominal hollowing exercise training for 15 minutes. The subjects in the pressure biofeedback unit group were trained by using a pressure biofeedback unit. Those in the real-time ultrasonographic imaging group received training with monitoring of possible contraction of their musculus transversus abdominis muscles on ultrasonography. [Results] In all the three groups, the musculus transversus abdominis became significantly thicker, but more significantly in the real-time ultrasonographic imaging group than in the basic training group. [Conclusion] The feedback method using real-time ultrasonographic imaging may be more effective in thickening the musculus transversus abdominis muscle during exercise than the traditional feedback method with manual contact only. However, it is insufficient in terms of overall qualitative improvement of exercise outcome.

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“…Only those who accurately performed the ADIM along with the contraction of the pelvic floor using a PBU in a supine position were instructed to perform the ADIM in WSS. Because the degree of upper extremity movements in WSS may affect the activity of the TrA ( Park and Lee, 2010 ), the upper extremities were placed in gentle contact with the trunk to control the movements.…”

Section: Methodsmentioning

confidence: 99%

“… Bjerkefors et al (2010) reported increasing selective activity of the TrA from the rectus abdominis (RA) located in the superficial layer while 5 different trunk stabilization exercises performed with the ADIM. In addition, Park et al (2010) also reported that when people with lumbar extension rotation syndrome performed the ADIM with knee flexion in a prone position, their LBP, pelvic movements and trunk extensor activity decreased while the activity of their knee flexors increased. As such, the ADIM is applied in combination with diverse exercises as a way to increase the effects of exercises.…”

Section: Introductionmentioning

confidence: 96%

The preferential contraction ratios of transversus abdominis on the variations of knee angles during abdominal drawing-in maneuver in wall support standing

Hwang¹,

Kim²,

Park³

2014

J Exerc Rehabil

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The objective of this study was to determine appropriate knee angles for the abdominal drawing-in maneuver (ADIM) through evaluation of changes in contraction ratios of the abdominal muscles and activity of quadriceps muscle in relation to changes in knee angles occurring while the ADIM is performed in the wall support standing (WSS). 20 subjects performed the ADIM at different knee angles (0°, 20°, 40°, 60°) in random order, standing at a point 6 inches away from the wall with the spine maintained in the neutral position. The WSS with knee flexion at 20° showed significantly higher preferential contraction ratio (PCR) of transversus abdominis (TrA) compared to other positions (0°, 40°, 60°). Therefore, performing the ADIM in the WSS with knee flexion at 20° appears to be the most appropriate position for TrA PCR.

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Activation of Abdominal Muscles during Abdominal Hollowing in Four Different Positions

Cited by 11 publications

References 28 publications

The Use of Rehabilitative Ultrasound Imaging for Feedback from the Abdominal Muscles during Abdominal Hollowing in Different Positions

The Use of Rehabilitative Ultrasound Imaging for Feedback from the Abdominal Muscles during Abdominal Hollowing in Different Positions

Comparison of abdominal muscle thickness according to feedback method used during abdominal hollowing exercise

The preferential contraction ratios of transversus abdominis on the variations of knee angles during abdominal drawing-in maneuver in wall support standing

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