• 제목/요약/키워드: climbing

검색결과 622건 처리시간 0.037초

The Effects of Stair Climbing Using Wearable Robot Bot Fit's Resistance

  • Jang-hoon Shin;Hwang-Jae Lee;Dokwan Lee;Wan-hee Lee
    • Physical Therapy Rehabilitation Science
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    • 제13권2호
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    • pp.205-212
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    • 2024
  • Objective: The purpose of this study is to confirm the exercise effect when combining wearable exercise assist robot, Bot fit's resist mode (Samsung Electronics) and stair climbing. Design: Cross-section study Methods: Targeting 53 adults and seniors, foot pressure and muscle activity were measured when climbing 3-story stairs using foot pressure measurement equipment (W-insole Science System) and surface muscle activity measurement equipment (sEMG; FreeEMG, BTS Bioengineering, Italy) using Bot Fit's resist mode. All subjects were measured without wearing Bot Fit, and the data between the two conditions were compared and analyzed. Results: The front area(p<0.01) and middle area(p<0.05) foot pressures of adults significantly increased when wearing the Bot fit. Frontal area foot pressure significantly increased in elderly people with knee arthritis and obesity(p<0.05). The gastrocnemius activity in all subjects significantly decreased after wearing Bot Fit(p<0.01). In elderly people with knee arthritis, the muscle activity of the rectus femoris was significantly reduced(p<0.05)., and in obese elderly people, the muscle activity of the gastrocnemius muscle was significantly reduced(p<0.05). Conclusions: Based on the results of this study, it is possible to induce correct stair climbing posture when climbing stairs using Bot fit resistance mode. In particular, it is expected to be an effective exercise for strengthening muscle endurance by increasing the activity of the rectus femoris muscle.

Why Does Only Contact the Half Area of the High Heel during Ascending Stairs?

  • Bo-Ram Choi
    • 대한통합의학회지
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    • 제12권3호
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    • pp.155-161
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    • 2024
  • Purpose : Wearing high-heeled shoes leads to foot and ankle instability, which requires leg muscles to remain in constant contraction. In order to adapt to the instability of the feet and ankles caused by wearing high heels, the muscles of the legs continuously repeat contraction and relaxation. Previous studies of the impact of stair climbing in high-heeled shoes have involved placing the entire stepping area of the shoe on the stair. However, high-heeled shoe wearers sometimes unconsciously contact the stair using only half of the stepping area. Therefore, the objective of this study was to examine differences in leg and ankle muscle activation according to stepping area during stair climbing in high-heeled shoes. Methods : Twenty young women in their early 20s voluntarily agreed to participate in this study. We used surface electromyography to measure gastrocnemius and tibialis anterior activation in the right leg during stair climbing under three conditions: barefoot, using half of high-heeled shoe stepping area, and using the total of high-heeled shoe stepping area. Barefoot, half of high heeled shoe, and total of high-heeled shoe were used to evaluate the effects of different areas of the foot or high heels touching the stairs. Results : Both muscles showed significant activity differences among the three stair climbing conditions. Gastrocnemius activity was significantly different between the high-heeled shoe conditions (p= .032), and tibialis anterior activity was significantly different between barefoot stair climbing and climbing with half of the high-heeled shoe stepping area (p= .021). Conclusion : The stepping area increased as heel size increased, thus increasing excessive gastrocnemius and tibialis anterior activity to control excessive ankle joint movement. We infer that using half of the high-heeled shoe stepping area prevents muscle fatigue by reducing excessive leg and ankle muscle activation.

수학적 창의성과 태도 및 학업에 미치는 등산학습법의 적용과 효과 (The Effect of Climbing Learning Method on Mathematical Creativity and Attitude toward Mathematical Creativity)

  • 이동희;김판수
    • 한국초등수학교육학회지
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    • 제14권1호
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    • pp.23-41
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    • 2010
  • 본 연구는 일본의 제등승(齊藤昇)(Saito Noboru) 교수에 의해 실천 연구되었던 등산학습법을 초등학교 4, 6학년 학생들에게 적용하여 수학적 창의성과 수학적 창의성 태도, 수학 학업성취도에 미치는 효과를 분석함으로써 수학적 창의성을 신장시킬 수 있는 방안을 모색하는데 그 목적을 두었다. 본 논문에서는 실험집단과 비교집단을 형성하여 t-검증한 결과, 등산학습법이 수학적 창의성 및 수학적 창의성 태도에는 긍정적인 영향을 주었으나 학업성취에서는 유의미한 차이를 나타내지 못했다는 결과와 함께 이러한 결과에 대한 논의와 수업전략을 언급한다.

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견인 및 등판 성능을 통한 고소작업기계의 모터 주행장치 설계 (Design of Motor-driven Traveling System for High Clearance Working Machinery based on Tractive Performance and Hill Climbing Ability)

  • 이상식;장세윤;김태수;남규철;박원엽
    • 한국정보전자통신기술학회논문지
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    • 제9권3호
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    • pp.257-265
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    • 2016
  • 이 연구는 과수원에 높은 통관 작업 기계에 적용되는 전동식 트럭 주행 시스템을 적용한 최적 설계가 제안되어 있습니다. 견인 성능과 언덕 등반 능력은 예측 및 기계 작업이 높은 틈새를 이용하여 과수원의 토양 특성을 고려하여 최적의 모터 주행 시스템을 평가 하였다. 견인 성능을 위한 설계 기준은 운동 저항을 뺀 견인력으로부터 산출 된 견인능력에 기초를 두었다. 등판 능력은 20%의 경사면을 3km/h의 속도로 수행되도록 하는 설계기준을 가지고 있다. 견인 및 등판 능력의 평가 결과에 따라 두 개의 DV48V, 4500rpm, 16kW AC 모터는 좌우 양쪽에서 독립적인 괘도를 갖는 것으로 적용된다. 각각의 모터는 50:1 감속기어 비율을 통하여 트랙형 주행 시스템의 구동 스프로켓에 동력을 전달하도록 설계되었다. 본 연구의 전동 트랙형 주행 시스템은 충분한 견인성능 및 등판 능력을 충분히 입증하고 20%의 경사지면을 갖는 과수원의 토양에서의 등반저항보다 12.5%가 더 높은 396kgf의 견인능력을 가지고 있는 것으로 밝혀졌습니다.