PURPOSE: The purpose of this study is to investigate the effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise. METHODS: 15 healthy adult men and women with the balance ability and joint working range required for performing a bridge exercise participated in ...
PURPOSE: The purpose of this study is to investigate the effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise. METHODS: 15 healthy adult men and women with the balance ability and joint working range required for performing a bridge exercise participated in this study, in which $120^{\circ}$, $90^{\circ}$ and $60^{\circ}$ angles of the knee-flexion and heel-off were applied during the bridge exercise. RESULTS: Our data showed that there were significant differences in muscle activities of elector spinae and rectus abdominis when $120^{\circ}$ and $60^{\circ}$ angles of the knee were applied, of internal oblique when $120^{\circ}$ and $60^{\circ}$ were applied, and external oblique when $90^{\circ}$ and $60^{\circ}$ were applied. When heel-off was applied, there were significant differences in muscle activities of elector spinae and rectus abdominis when $120^{\circ}$ and $60^{\circ}$ were applied, of internal oblique when $120^{\circ}$ and $60^{\circ}$ were applied, and external oblique when $90^{\circ}$ and $60^{\circ}$ were applied. CONCLUSION: In this study on an application of heel-off to the bridge exercise, we showed that the effect of the angles of the knee on the muscle activities of elector spinae, rectus abdominis, internal oblique and external oblique were all similar to the regular bridge exercise, but overall muscle activities were increased with heel-off when compared with the regular bridge exercise.
PURPOSE: The purpose of this study is to investigate the effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise. METHODS: 15 healthy adult men and women with the balance ability and joint working range required for performing a bridge exercise participated in this study, in which $120^{\circ}$, $90^{\circ}$ and $60^{\circ}$ angles of the knee-flexion and heel-off were applied during the bridge exercise. RESULTS: Our data showed that there were significant differences in muscle activities of elector spinae and rectus abdominis when $120^{\circ}$ and $60^{\circ}$ angles of the knee were applied, of internal oblique when $120^{\circ}$ and $60^{\circ}$ were applied, and external oblique when $90^{\circ}$ and $60^{\circ}$ were applied. When heel-off was applied, there were significant differences in muscle activities of elector spinae and rectus abdominis when $120^{\circ}$ and $60^{\circ}$ were applied, of internal oblique when $120^{\circ}$ and $60^{\circ}$ were applied, and external oblique when $90^{\circ}$ and $60^{\circ}$ were applied. CONCLUSION: In this study on an application of heel-off to the bridge exercise, we showed that the effect of the angles of the knee on the muscle activities of elector spinae, rectus abdominis, internal oblique and external oblique were all similar to the regular bridge exercise, but overall muscle activities were increased with heel-off when compared with the regular bridge exercise.
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문제 정의
The study included 15 healthy male and female adults with the ability to balance and the range of joint motion required to complete the bridge exercise. The participants also understood the details of study and chose to participate.
This study was conducted to investigate the effects knee angle and heel raising during the bridge exercise have on trunk muscle activation. The erector spine, rectus abdominis, external oblique, and internal oblique muscle activations were measured at different knee angles (120°, 90°, 60°) without heel raising during a general bridge exercise.
제안 방법
They maintained this posture for five seconds (Jeon, 2010; Stevens et al, 2006). Before this experiment, each subject practiced the bridging position with their spine and pelvis maintained in the neutral position for 10 minutes and both their arms were positioned at specific angles so their lower limbs stayed parallel and at an appropriate angle. The subjects received continuous feedback to adjust their specified posture.
In this study, EMG electrodes were attached to the internal oblique, external oblique, rectus abdominis, and erector spine muscles to measure their activation during the bridge exercise. The ground electrode was attached to the dominant anterior superior iliac spine (ASIS) (Arokoski et al, 2001; Cram et al, 1998).
In this study, based on the bridge exercise that is generally used in clinical settings, the subjects lied down in the supine position with their feet parallel to each other, their soles in full contact with the floor, and both knees bent at 60°.
In this study, the bridge exercise was altered. The heel was raised and the knee angle was changed during the bridge exercise to provide gradual resistance using body weight while simultaneously applying the optimum knee angle at which trunk muscle stabilization increased.
대상 데이터
The study consisted of 15 normal male and female adult participants. Their ages ranged from 20 to 28, with a mean age of 22.
데이터처리
0 for Windows. The activation of each muscle measured during the bridge exercise was analyzed using one-way ANOVA. Each significant difference was tested post-hoc using Bonferroni's correction.
성능/효과
Significant differences in the erector spine and rectus abdominis muscle activations were found between 120°and 60°knee angles (p<0.05), but no significant differences were found between 120°and 90°knee angles and between 90°and 60°knee angles.
참고문헌 (14)
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