한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제16권3호
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  • Pages.137-148
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  • 2006
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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롤러신발과 일반신발의 착용 후 보행 시 하지근의 근전도 비교

The Effects of Wearing Roller Shoes on Muscle Activity in The Lower Extremity During Walking

  • 발행 : 2006.09.30
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초록

The purpose of this study was to compare muscle activity in the lower extremity during walking wearing jogging and roller shoes. Twelve male middle school students (age: 15.0 yrs, height 173.7 cm, weight 587.7 N) who have no known musculoskeletal disorders were recruited as the subjects. Seven pairs of surface electrodes (QEMG8, Laxtha Korea, gain = 1,000, input impedance >$1012{\Omega}$, CMMR >100 dB) were attached to the right-hand side of the body to monitor the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), tibialis anterior (TA), and medial (GM) and lateral gastrocnemius (GL) while subjects walked wearing roller and jogging shoes in random order at a speed of 1.1 m/s. An event sync unit with a bright LED light was used to synchronize the video and EMG recordings. EMG data were filtered using a 10 Hz to 350 Hz Butterworth band-passdigital filter and further normalized to the respective maximum voluntary isometric contraction EMG levels. For each trial being analyzed, five critical instants and four phases were identified from the recording. Averaged IEMG and peak IEMG were determined for each trial. For each dependent variable, paired t-test was performed to test if significant difference existed between shoe conditions (p<.05). The VM, TA, BF, and GM activities during the initial double limb stance and the initial single limb stance reduced significantly when going from jogging shoe to roller shoe condition. The decrease in EMG levels in those muscles indicated that the subjects locked the ankle and knee joints in an awkward fashion to compensate for the imbalance. Muscle activity in the GM for the roller shoe condition was significantly greater than the corresponding value for the jogging shoe condition during the terminal double limb stance and the terminal single limb stance. Because the subjects tried to keep their upper body weight in front of the hip to prevent falling backward, the GM activity for the roller shoe condition increased. It seems that there are differences in muscle activity between roller shoe and jogging shoe conditions. The differences in EMG pattern may be caused primarily by the altered position of ankle, knee, and center of mass throughout the walking cycle. Future studies should examine joint kinematics during walking with roller shoes.

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피인용 문헌

  1. The Effect of Form and Hardness of Outsoles on the Motion of the Lower Extremity Joints and on Foot Pressure during Gait vol.21, pp.2, 2011, https://doi.org/10.5103/KJSB.2011.21.2.223
  2. EMG Power Spectrum Analysis of Wearing Roller Shoes on Muscle Fatigue in the Lower Extremity during Walking vol.17, pp.2, 2007, https://doi.org/10.5103/KJSB.2007.17.2.239
  3. The Effect of Form of Outsole on Lower Leg Electromyography during Gait vol.13, pp.1, 2012, https://doi.org/10.5762/KAIS.2012.13.1.227
  4. An Analysis of 500m Inline Skate Starting Motions vol.17, pp.2, 2007, https://doi.org/10.5103/KJSB.2007.17.2.023
  5. Medial Longitudinal Arch Balanced Analysis of the Calibration vol.8, pp.2, 2014, https://doi.org/10.7742/jksr.2014.8.2.51