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Electromyographic Analysis of Thoracic and Lumbar Erector Spinae Activity Using the Abdominal Drawing-in Maneuver and Chin Tuck During Prone Thoracic Extension Exercises

한국전문물리치료학회지 2012년 19권 4호 p.1 ~ 7
김기송, 최동준, 신헌석, 권오윤, 이규완,
소속 상세정보
김기송 ( Kim Ki-Song ) - Yonsei University College of Medicine Department of Physical Therapy
최동준 ( Choi Dong-Joon ) - Yonsei University Graduate Shool of Health Science Department of Ergonomic Therapy
신헌석 ( Cynn Heon-seock ) - Yonsei University College of Health Science Department of Physical Therapy
권오윤 ( Kwon Oh-Yun ) - Yonsei University College of Health Science Department of Physical Therapy
이규완 ( Lee Gyu-Wan ) - Yonsei University College of Medicine Department of Physical Therapy

Abstract


This present study investigated the effects of the abdominal drawing-in maneuver (ADIM) and chin tuck (CT) on middle thoracic erector spinae, lower thoracic erector spinae, and lumbar erector spinae muscle activity during three prone thoracic extension (PTE) exercises. Twelve healthy subjects performed preferred PTE, ADIM PTE, and ADIM-CT PTE. Surface electromyography was used to collect data on the muscle activity of dominant middle and lower thoracic erector spinae muscles and the lumbar erector spinae. Middle and lower thoracic erector spinae muscle activity significantly increased when ADIM and CT was performed (p<.05). However, lumbar erector spinae muscle activity significantly decreased in ADIM PTE compared to preferred PTE (p=.017) and significantly increased in ADIM-CT PTE compared to ADIM PTE (p=.004). In conclusion, ADIM-CT PTE effectively increased middle and lower thoracic erector spinae muscle activity, and ADIM PTE decreased lumbar erector spinae muscle activity. Hence, ADIM PTE could be a recommended exercise maneuver to strengthen thoracic erector spinae without over activation of lumbar erector spinae.

키워드

Abdominal drawing-in Maneuver;Chin tuck;prone thoracic extension;Surface electromyography

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