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Comparative Study
. 2014 Aug;15(3):162-8.
doi: 10.1016/j.ptsp.2013.09.003. Epub 2013 Sep 27.

Abdominal Muscle EMG-activity During Bridge Exercises on Stable and Unstable Surfaces

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Comparative Study

Abdominal Muscle EMG-activity During Bridge Exercises on Stable and Unstable Surfaces

Dariusz Czaprowski et al. Phys Ther Sport. .

Abstract

Objectives: To assess abdominal muscles (AM) activity during prone, side, and supine bridge on stable and unstable surfaces (BOSU, Swiss Ball).

Design: Prospective comparison study.

Setting: Research laboratory.

Participants: Thirty-three healthy volunteers from a university population.

Main outcome measures: Surface electromyography of the rectus abdominis (RA), the external oblique (EO) and the internal oblique with the transversus abdominis (IO-TA).

Results: The AM exhibited the highest activity during prone bridge on a Swiss Ball (RA, EO, IO-TA 44.7 ± 19.2, 54.7 ± 22.9, 36.8 ± 18.6 in % of MVC, respectively). The lowest activity was observed during supine bridge on a stable surface and a BOSU (under 5.0). The lowest ratio analyzed on the basis of the relation of EO and IO-TA activity to RA was obtained during prone bridge on the Swiss Ball (1.4 ± 0.7 for EO, 0.9 ± 0.5 for IO-TA). The highest ratio was obtained during prone bridge on stable surface and supine bridges.

Conclusions: The highest level of activity in the abdominal muscles is achieved during prone bridge on a Swiss Ball. However, this exercise provided the lowest activity of the EO and IO-TA in relation to RA. It is essential to conduct further studies verifying the usefulness of using Swiss Ball during core stability training.

Keywords: BOSU; Core stability; Electromyography; Sport training; Swiss Ball.

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