The effect of muscle activity according to pelvic angle in different positions: Randomized crossover trial

The purpose of this study was to investigate the most effective pelvic tilt exercise in different posture.

This study included twenty healthy adults. All subjects performed an different pelvic tilt during sitting and standing in static posture, the experiment was performed three times each, respectively. The angle of the pelvis was measured using a 3D motion analysis system, and muscle activation was measured by EMG. For the data analysis, one way repeated ANOVA was used to compare the muscle activity with changes in pelvic tilt angle, and bonferroni was used for posttest for differences between variables.

As a result, in the anterior pelvic tilt, the activity of the erector spine muscle was the highest, while the posterior pelvic tilt, transverse abdominis muscle was the most active, when comparing the standing and sitting posture, both erector spinae muscles and both semitendinosus muscles were dominant in a static anterior pelvic tilt, and posterior pelvic tilt posture, for the posterior pelvic tilt in sitting posture, both transverse abdominis muscles were dominant.

It is recommended to perform a pelvic tilt exercise in the correct posture to strengthen muscles. These results may be helpful in selecting more effective exercise methods for clinical treatment.