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Effect of lower limb's support type on pectoralis major and erector spinae muscle activity during flat bench press

플랫 벤치 프레스 동작 시 하지의 지지유형이 대흉근과 척추기립근의 근 활성에 미치는 영향

  • Lee, Sengu-Young (Department of Physical Education, Graduate School of Konkuk Univ.) ;
  • Ryu, Jong-Wook (Division of Humanities and Liberal Arts, College of Humanities and Social Sciences, Hanbat National Univ.) ;
  • Kim, Jai-Jeong (Division of Humanities and Liberal Arts, College of Humanities and Social Sciences, Hanbat National Univ.)
  • 이승용 (건국대학교 체육학과) ;
  • 유종욱 (국립한밭대학교 인문교양학부) ;
  • 김재정 (국립한밭대학교 인문교양학부)
  • Received : 2018.08.20
  • Accepted : 2018.09.22
  • Published : 2018.09.30

Abstract

The purpose of this study was to obtain data to support applied motions of bench press and to provide basic data for the efficient execution of the exercise by analyzing muscular activation through measuring electromyogram of pectoralis major and erector spinae when flat bench pressing with feet on the ground versus feet on the bench. For this study, 4 amateur bodybuilders and 2 health trainers were chosen as subjects. Surface electrodes were attached on the measuring muscles; pectoralis major and erector spinae. Motion phases were defined for the flat bench press and each subject, with a 10RM load, performed a set with feet on the ground and another set with feet on the bench. Data was analyzed in SPSS 20.0 and the following results were obtained. The placement of the feet did not affect the muscular activation of the pectoralis major during the flat bench press. however, the muscular activation of the erector spinae was different between the two positions.

본 연구의 목적은 플랫 벤치 프레스에서 하지를 지면에 지지한 자세와 하지를 벤치에 지지한 자세에서의 동작 수행 시 대흉근 및 척추기립근의 근 활성 분석을 통해 벤치 프레스 응용동작에 뒷받침 할 만 한 근거자료를 찾고, 운동수행에 관한 효율적인 기초자료를 제시하는데 있다. 대상자는 아마추어 보디빌더 4명, 헬스 트레이너 2명으로 선정하였다. 측정을 위해 연구대상들의 대흉근과 척추기립근에 표면전극을 부착하였다. 벤치 프레스에 대한 동작구간을 설정하고 하지를 지면에 지지한 동작과 하지를 벤치에 지지한 동작으로 나눠 피험자별 10RM으로 각각 1세트씩 실시하는 방식으로 진행하였다. 데이터는 SPSS 20.0을 통하여 분석하였으며 다음과 같은 결과를 얻었다. 플랫 벤치 프레스 동작 시 하지의 지지 유형이 대흉근에는 영향을 미치지 않았지만, 척추기립근에서는 차이가 나타났다.

Keywords

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