무릎운동훈련들이 안쪽빗넓은근과 가쪽넓은근의 수축 개시시간에 미치는 효과
The Effect of Knee Exercises on the Onset Time of Vastus Medialis Oblique and Vastus Lateralis Muscle.
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The purpose of this study was to investigate the effect of knee exercises on the onset timesof vastus medialis oblique muscle (VMO) and vastus lateralis muscle (VL) and in healthy subjects. Fifteen subjects (7 men, 8 women) in a mean age of 26.4 years participated in the study. Electromyographic (EMG) signals were recorded from the VMO and VL under four exercises. Kneeexercises consisted of open kinematic terminal knee extension, straight leg raising, isometrichip adduction exercise, and closed kinematic terminal knee extension. No significant differenceswere found in the onset times of EMG activities of VMO and VL in the four exercises. There werealso no significant differences among the exercises. These results coincided with previous studiesthat found no difference between onset of VMO and VL . However, it is difficult to say that thereis no difference between onset of VMO and VL in healthy subjects. To confirm this results, furtherresearches that follow same onset determination metod and exercises are needed. Not only is thestudy of onset time of muscle needed, but also the studies of the amount of activation and therate of increase of muscle activation are needed.
Abstract
The purpose of this study was to investigate the effect of knee exercises on the onset timesof vastus medialis oblique muscle (VMO) and vastus lateralis muscle (VL) and in healthy subjects. Fifteen subjects (7 men, 8 women) in a mean age of 26.4 years participated in the study. Electromyographic (EMG) signals were recorded from the VMO and VL under four exercises. Kneeexercises consisted of open kinematic terminal knee extension, straight leg raising, isometrichip adduction exercise, and closed kinematic terminal knee extension. No significant differenceswere found in the onset times of EMG activities of VMO and VL in the four exercises. There werealso no significant differences among the exercises. These results coincided with previous studiesthat found no difference between onset of VMO and VL . However, it is difficult to say that thereis no difference between onset of VMO and VL in healthy subjects. To confirm this results, furtherresearches that follow same onset determination metod and exercises are needed. Not only is thestudy of onset time of muscle needed, but also the studies of the amount of activation and therate of increase of muscle activation are needed.