Many chiropractors notice that women under their care seem to have easier labours with less complications, fewer issues with incontinence and better core stability.

Pelvic floor muscle function is incredibly important for many reasons. Having coordinated, synchronous muscle function is important in labour (particularly in the pushing stage) in maintaining continence and in maintaining core stability along with activation of the abdominal muscles.

This study will investigate whether adjusting lumbopelvic vertebral subluxations changes pelvic muscle function. The study is designed in three stages. Study 1, which this grant relates to, aims to develop and test a new multi-sensor intravaginal surface electrode probe and test the validity and reliability of the probe. If the device is shown to be valid and reliable Study 2 will test the synchronicity of the pelvic muscle contractions of 90 women. Women who show asynchronous activity will be recruited for Study 3 where the investigators will test immediate pre and post adjustment measurements of pelvic muscle activity.

Grant Value:$65,600
Chief Investigators:
 Dr Heidi Haavik, Dr Stanley Flavel – New Zealand College of Chiropractic
Status: Complete



  • 39th World Congress of Chiropractic Students Annual General Meeting at Life West Chiropractic College, August 2017, San Francisco, USA
    Jenna Duehr. 3rd equal research poster award. The effects of Chiropractic Care on the onset of contractions of the female pelvic floor muscles. 
  • World Federation of Chiropractic’s Congress in conjunction with the Association of Chiropractic Colleges and the American Chiropractic Association March 2017, Washington, USA
    Duehr, J. New Investigator Research Poster Award