Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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Reliability and Validity of the Measurement of Pelvic Movement in Low Back Pain Patients using Cushion Sensor in Sitting Position

앉은 자세에서 방석센서를 이용한 요통환자 골반가동성 측정의 신뢰도와 타당도

  • Jung, Seung-Hwa (Department of Physical Therapy, The Graduate School of Medical Science, Konyang University) ;
  • Park, Dae-Sung (Department of Physical Therapy, Konyang University)
  • 정승화 (건양대학교 물리치료학과 일반대학원) ;
  • 박대성 (건양대학교 물리치료학과)
  • Received : 2020.01.14
  • Accepted : 2020.02.14
  • Published : 2020.05.31
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Abstract

PURPOSE: Postural and structural asymmetry due to muscle imbalances around the lower back and pelvis are the causes of back pain. Muscle imbalances in patients with chronic low back pain affect the pelvic tilt and movement, and it is necessary to assess the pelvic movement ability using the appropriate tools to determine the mediating effects of lower back pain. This paper reports the reliability and validity of the Sensbalance Therapy Cushion (STC) for pelvic movement and proprioception. METHODS: In this study, the Wii balance board (WBB) was used as a golden standard for pelvic movement measurements. FABQ, KODI, Myovision, and Pelvic movement were measured in 50 patients with chronic low back pain. The correlation between the lower-back muscle activity and pelvic movement was checked. The pelvic movement parameter was measured twice to determine the intra-rater reliability. RESULTS: The STC showed high test-retest reliability in the pelvic tilt measurements (ICC = .672 - .809). The test-retest reliability of proprioception measurements (ICC = .588 - .859) and reaction time measurements (ICC = .542 - .836) were also high. The relationship between the WBB and STC showed a significant positive correlation with the pelvic tilt test (p < .01). The posterior pelvic tilt and lower-back muscle activity showed a significant negative correlation (p < .01). The pelvic left tilt and lower-back muscle activity showed a significant negative correlation (p < .05). CONCLUSION: The results revealed the high reliability and validity of the STC. Therefore, the STC can be used as an objective measuring device for evaluating pelvic tilt, proprioception, and reaction time in low back pain patients.

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References

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