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The effects of the angles of the knee and heel-off on the muscle activity during a bridge exercise

  • Kim, Byeong-jo ;
  • Lee, Su-kyoung ;
  • Lee, Jung-hoon ;
  • Kwon, Hae-yeon
  • Received : 2015.07.27
  • Accepted : 2015.08.17
  • Published : 2015.08.31

Abstract

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.

Keywords

Bridging exercise;Heel off;Knee angle;Muscle activity

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Cited by

  1. Changes in the activity of trunk and hip extensor muscles during bridge exercises with variations in unilateral knee joint angle vol.28, pp.9, 2016, https://doi.org/10.1589/jpts.28.2537

Acknowledgement

Supported by : Dong-Eui University