스텝퍼의 운동 방향이 다리 근육 활성도에 미치는 영향

다국어 초록 (Multilingual Abstract)

Many people are unable to exercise due to time or space constraints. In addition, the number of people who do home workouts is increasing. This study aims to provide information on how to exercise efficiently and selectively strengthen muscles using exercise equipment.
This study aims to provide a variety of information about selectively strengthening lower extremity muscles using a stepper exercise machine with different drive directions. The data to be provided are changes in muscle activity and balance ability of the lower extremity muscles.
Thirty-six healthy males participated in this study. As a pre-exercise warm-up, they performed a 5-min flat walk. After a 2-minute rest period, a Y-balance test was performed to assess pre-exercise balance ability. Participants were randomized to one type of stepper for 3 minutes, followed by 2 minutes of flat walking as a cool down exercise. After a 2-minute rest period, post-exercise balance was assessed. During stepper exercise, EMG electrodes were attached to the Gluteus Maximus, Gluteus Medius, Vastus Lateralis, Vastus Medialis, Biceps Femoris, Tibialis Anterior, Gastrocnemius Medialis and Peroneus Longus to measure muscle activity.
The results of this study showed that all stepper exercises strengthened the lower extremity muscles and improved balance. When comparing muscle activity between groups, there was a significant difference between the Gluteus Medius, Gastrocnemius Medialis and Peroneus Longus when exercising on the side stepper. In balance ability, the group that exercised with the side stepper showed more gains in all directions of the Y-balance test compared to the other groups.

[Key words]
Stepper, Selective strengthening exercise, lower extremity muscle strengthening, Balance

목차 (Table of Contents)

• Ⅰ. 서 론 1
• 1. 연구의 필요성 1
• 2. 연구의 목적 4
• 3. 연구의 가설 5
• Ⅱ. 이론적 배경 6
• 1. 스텝퍼 운동 6
• 2. 선택적 강화 운동 8
• 3. 근전도(electromyogaphy : EMG) 10
• Ⅲ. 연구 방법 12
• 1. 연구 대상자 12
• 2. 실험 도구 13
• 1) 스텝퍼 13
• 2) 표면 근전도 15
• 3) 균형 능력 측정 20
• 3. 실험 절차 22
• 4. 자료 분석 24
• 5. 생명윤리위원회 승인 25
• Ⅳ. 연구 결과 26
• 1. 연구 대상자의 일반적 특성 26
• 2. 스텝퍼의 운동 방향에 따른 다리 근육의 근활성도 비교 28
• 1) 중간볼기근의 근활성도 비교 28
• 2) 큰볼기근의 근활성도 비교 30
• 3) 넙다리두갈래근의 근활성도 비교 32
• 4) 안쪽장딴지근의 근활성도 비교 34
• 5) 긴종아리근의 근활성도 비교 36
• 6) 앞정강근의 근활성도 비교 38
• 7) 안쪽넓은근의 근활성도 비교 40
• 8) 가쪽넓은근의 근활성도 비교 42
• 3. 균형 능력 비교 44
• 1) 운동 전·후 절대 도달거리 비교 44
• 2) 스텝퍼 운동 방향에 따른 운동 전·후 절대 도달거리 차이값 비교 46
• 3) 측정 방향 별 전·후 차이값 비교 48
• Ⅴ. 고찰 50
• Ⅵ. 결론 53
• 참고문헌 54
• ABSTRACT 60