1) 스위스볼을적용한교각자세변화에따른체간의근활성도비교 The Comparison of Trunk Muscles Activity During Bridging Stabilization Exercises on Swiss Ball According to Change of Position Sun-tae Son, Min-hye Kim, Hee-jin Kim, Ji-hye Yoon, Su-kyung Lee, Ju-young Jung, Sung-soo Bae Department of Physical Therapy College of Rehabilitation Science, Daegu University <Abstract> Purpose : The purpose of this study was to assess the effect of bridging stabilization exercises of trunk muscles activity on a Swiss ball according to change of position. Methods 30 healthy university students volunteered to participate in this study. Subjects were required to complete following three exercise positions. Exercise position 1; Supine bridge with Swiss ball, Exercise position 2; Side bridge with Swiss ball, Exercise position 3; Prone bridge with Swiss ball. Surface electromyography from selected trunk muscles was normalized to maximum voluntary isometric contraction. Results : A repeated measures of ANOVA with Duncan's correction was used to determine the influence of exercise type on muscle activity for rectus abdominis, external oblique, erector spinae. The erector spinae of exercise position 1 showed significantly higher muscle activity than exercise position 2, 3(p<.05). The external oblique of exercise position 2, 3 showed significantly higher muscle activity than exercise position 1(p<.05). The rectus abdominis of exercise position 3 showed significantly higher muscle activity than exercise position 1, 2(p<.05) Conclusion These results indicate that muscle activity can be influenced by addition of a Swiss ball in bridging exercises. It is recommend to use a Swiss ball for trunk stabilization exercise. Key Words Position, Bridging stabilization exercise, Electromyography, Trunk muscle Ⅰ., E-mail: ssbae@daegu.ac.kr 2009 10 3 / 2009 10 19 / 2009 11 6
80%, O'Sullivan (2003), (reposition sense)..(, 2001) Arokoski (2001) 1937 williams,,,,,,. (bridging exercise).,.(stevens, 2007). (lumbar stabilization). (2004),.,., (Maffey-ward, 1996). (2000),,,,. Marshall (2005). (mobility) (stretching), -,,,.., (, 2004)., (, 2001).,,. (McGill et al. 2003). ( 2007).,, (Hall Brody, 1999; Neumann, 2002).,
, ( 2004). (Richardson 2002).... (Richardson 2002). (global muscle) (local muscle).. (intrinsic muscle) (Bergmark 1989). (Marshall, Murphy 2005; Stevens 2007). 20,,.,. 15, 15. Table 1. Characteristics of subjects(man) characteristic average± standard deviation range age(years) 20-28 (n=15) Height(cm) Body weight(kg) Table 2. Characteristics of subjects(woman) (n=15) characteristic average± standard deviation range age(years) 23 ±1.25 20-28 Height(cm) 163.46 ±3.56 158-169 Body weight(kg) 50.2 ±3.82 44-57 2. (surface EMG) BioGraph Infiniti TM (Thought Technology Ltd, Canada) (Fig 1).,, 3 3 Ⅱ. 1. 30., 6 Fig 1. Surface EMG, BioGraph Infiniti TM (Thought Technology Ltd, Canada)
.. (1) (rectus abdominis) : 2cm. (2) (external oblique) : 15cm. (3) (erector spine) : L4 2cm. 20~500Hz 3 14 - (14 Bit Analog-Digital converter), TT-USB. 20 5 10. root mean square(rms). 3 RMS. 5 2, 1 3. Daniels Worthingham (Hislop, 1995). %MVIC.. 0 (Fig 2-1). (2) 2.. (Fig 2-2). Fig 2-2. Exercise position 2 (3) 3 (Fig 2-3). 3. 3.. (1) 1 15 Fig 2-3. Exercise position 3 Fig 2-1. Exercise position 1. 20 20. Table 2.
Table 2. Swissball size Height (cm/inch) Ball Size (cm/inch) Ball Color 140~150 / 55~66 45 / 17.7 yellow 155~165 / 61~66 55 / 21.6 red 170~180 / 67~71 65 / 25.6 green 183~190 / 72~75 77 / 29.5 blue 190 / 75 85 / 33.5 white Table 3. Comparison of one-way ANOVA test according to movement method with activities of trunk muscles (%MVIC) 1. (%MVIC) (%MVIC) Table 3.,, (p<.05). 2. 1 3, 2 3 (p<.05). RF EO ES Movement RF : Rectus femoris EO : External oblique ES : Erector spinae 4. average± standard deviation 1 17.98±16.88 2 22.72±16.60 3 60.49±42.75 1 15.15±9.70 2 39.96±26.85 3 55.53±33.15 1 31.63±10.92 2 31.75±17.62 3 9.32±10.08 F p 20.45.000* 19.50.000* 28.26.000* Table 4. Comparison of movement method with activities of trunk muscles RF Average difference(i-j) Standard error 1-2 -4.74 3.40.173 1-3 -42.51* 7.58.000* 2-3 -37.76* 6.60.000* EO Average difference(i-j) Standard error 1-2 -24.82* 4.44.000* 1-3 -40.39* 5.96.000* 2-3 -15.57* 5.79.012* ES Average difference(i-j) Standard error 1-2 -.117 2.62.965 1-3 -22.31* 2.43.000* 2-3 -22.43* 3.18.000* p p p SPSS 12.0., (repeated one-way ANOVA). Duncan's correction. α=.05. Ⅲ.
Fig 3. Comparison of movement method with activities of trunk muscles(*p<.05) 1 2 (p<.05). 1 3 (p<.05) (Table 4, Fig3). Ⅳ.,, (stevens, 2006),,,,,, thoracolumbar fascia(tfl) (Nouwen et al, 1987)., (Akuthota Nadler, 2004)., (Lehman, 2005). -,.. Vera-Garcia (2000),.,,.,,.,.,. 1 2 3. 1 2 3, 1. 1. 2, 3.
1 2, 3, 3 1 2. 1 3.. 3 1. 1. 3.. (co-contraction) (, 1997; Shumway -Cook Woollacotte, 1995).. (Hall Brody, 1999; Neumann, 2002). (, 1996; Shumway-Cook Woollacotte, 1995).. (Shumway-Cook Woollacotte, 1995)... (Shumway-Cook Woollacotte, 1995)..., (multifidus) (trans-verse abdominal) (fine-wire),.... Ⅴ.,,.. 1. 1. 2. 2. 3. 3..
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