Effect of Changes in Knee Angle and Weight-Shifting of the Sole on the Lower Extremity Muscle Activity during the Bridge Exercise

CHO HYE JUNG (조혜정); Lee-Min-Woo (이민우); Se-Young Bak (박세영); Kim, Hyeong-Dong (김형동); Un Chul Shin (신운철)

Effect of Changes in Knee Angle and Weight-Shifting of the Sole on the Lower Extremity Muscle Activity during the Bridge Exercise

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2022, 17(2), pp.21-28
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
Received : February 8, 2022
Accepted : April 1, 2022
Published : May 31, 2022

CHO HYE JUNG ¹, Lee-Min-Woo ¹, Se-Young Bak ¹, Kim, Hyeong-Dong ¹, Un Chul Shin ¹

¹고려대학교

Accredited

ABSTRACT

PURPOSE: This study examined the effect of changes in the knee angle and weight shifting of the sole on the activity of the lower extremity muscles during bridge exercise. METHODS: The subjects of this study included 20 healthy adult women (mean age 29.8 ± 4.32). The subjects performed the bridge exercise under three weight-shifting conditions general bridge (GB), hindfoot press bridge (HPB), and fore-foot bridge (FPB) and at two knee angles (90° and 60°). During the bridge exercise, the activity of the quadriceps femoris (rectus femoris, vastus medialis oblique, and vastus lateralis) and biceps femoris muscles were measured using an electromyography sensor. RESULTS: In the quadriceps femoris, the muscle activity of HPB and FPB was significantly higher than that of the GB at knee angles of 90° and 60° (p < .05). In the biceps femoris, the muscle activity increased significantly in the order of GB< HPB < FPB, and the knee angle increased significantly at 60° rather than at 90° (p < .05). There was no significant difference according to the knee angle in all muscles except for the biceps femoris. CONCLUSION: These findings suggest that the weightshifting bridge of sole bridge exercise was more effective in increasing the activation of the lower extremity muscles than the GB.

KEYWORDS

Bridge exercise, EMG, Lower extremity muscle activity, Weight-shifting

Citation status

* References for papers published after 2023 are currently being built.

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