The Concentrations and Loads of Pollutant in Wet Deposition in Cheongju

Oh, Suhk Kun; Oh, Kwang-Young; Lee, Jong-Jin; Kim, Sun‐Jong; Cho, Jae-Won; Khan, Jong-Bum; Jeong, Gu-Young

doi:10.3741/jkwra.2004.37.11.959

Cited by 1 publication

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“…The front leg moved forward quickly with less chance of vertical displacement in the center of mass was important during marche [11]. Kim and Oh (2009) argued that evenly distributing body mass to both legs enabled pushing vigorously with a stable posture and increase the step during the fente [24]. Therefore, the TA of the dominant leg was first activated to sustain the posture and take the dominant leg off [12].…”

Section: Discussionmentioning

confidence: 99%

Low Activation of Knee Extensors and High Activation of Knee Flexors in Female Fencing Athletes Is Related to the Response Time during the Marche-Fente

Kim

Lee

2022

IJERPH

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Reaction time is important to determine the performance of fencing. The purpose of this study was to investigate the reaction time and muscle activity and compare the movement among genders during Marche-fente. Fifteen Korean national Fleuret fencing athletes participated and were instructed to perform Marche-fente. Reaction time was measured with Plug & Play equipment and muscle activation was obtained by electromyography. The male athletes (0.94 ± 0.08 s) were faster than female athletes, who a performance of 1.03 ± 0.05 s. As the knee extensors activation was increased, the movement and response time was shorter (rectus femoris (RF); r = −0.526, p < 0.05, vastus lateralis oblique (VLO); r = −0.628, p < 0.05). In phase 1, men activated more knee extensors in the dominant leg, whereas the activation of knee flexors was increased to maintain a stable posture in women. Additionally, women used other muscles instead of large muscles such as RF and VLO in phase 2. In conclusion, female athletes activated knee flexors rather than knee extensors when moving the center of mass or generating a greater force. Less use of knee extensors is associated with knee injuries; therefore, exercise which activates knee extensors is required for females.

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