Abdominal muscle EMG-activity during bridge exercises on stable and unstable surfaces
- a Department of Physiotherapy, Józef Rusiecki University College in Olsztyn, 10-243 Olsztyn, Bydgoska 33, Poland
- b Department of Posture Correction, Faculty of Physical Education and Sport in Biala Podlaska, Józef Piłsudski University of Physical Education in Warsaw, Poland
- c Physical Therapy and Exercise Center, Valencia, Spain
- d Institute for Research on Musculoskeletal Disorders, School of Medicine, Valencia Catholic University, Valencia, Spain
- e Fizjo-Sport, Rzeszów, Poland
To assess abdominal muscles (AM) activity during prone, side, and supine bridge on stable and unstable surfaces (BOSU, Swiss Ball).
Prospective comparison study.
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).
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.
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.
- Swiss Ball;
- Core stability;
- Sport training