Activity of the Quadratus Lumborum and Trunk Muscles Relates to Pelvic Tilt Angle during Pelvic Tilt Exercises

Tomoki Oshikawa, Gen Adachi, Hiroshi Akuzawa, Yu Okubo, Koji Kaneoka

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Objective Pelvic tilt exercises are used clinically to correct lumbopelvic alignment. The anterior and posterior layers of the quadratus lumborum are important for pelvic motor control in the coronal plane. This study aimed to evaluate whether the anterior and posterior activity is related to the pelvic tilt angle during pelvic tilt exercises. Design The study design was single-occasion repeated measures in a randomized manner. Twelve healthy men performed the four directions of the pelvic tilt exercises (anterior or posterior pelvic tilt and lateral pelvic elevation on the ipsilateral or contralateral measurement side). The electromyographies of the anterior and posterior were recorded using intramuscular fine-wire electrodes and normalized to isometric peak electromyography. Results The activity of the anterior and posterior during lateral pelvic elevation on the ipsilateral measurement side (19.0 ± 16.0 percent of maximal voluntary isometric contraction) was significantly higher than that during other directions of the pelvic tilt exercises (P < 0.01). There was a significant positive correlation between the anterior activity and the maximum change angles of pelvic tilt during lateral pelvic elevation on the ipsilateral measurement side (r = 0.674, P = 0.016). Conclusions The anterior activity was related to a large lateral pelvic elevation angle on the ipsilateral side during pelvic tilt exercises.

Original languageEnglish
Pages (from-to)1109-1115
Number of pages7
JournalAmerican Journal of Physical Medicine and Rehabilitation
Volume99
Issue number12
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • Electromyography
  • Pelvic Tilt Exercise
  • Quadratus Lumborum
  • Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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