Dr Ryan Stafford
School of Health and Rehabilitation Sciences
+61 7 334 67751
+61 7 336 52275
Journal Articles
Biswokarma, Yvonne, Brandon, Karen, Lohman, Everett, Stafford, Ryan, Daher, Noha, Petrofsky, Jerold, Thapa, Uma, Berk, Lee, Hitchcock, Robert and Hodges, Paul W. (2024). Potential role of physical labor and cultural views of menstruation in high incidence of pelvic organ prolapse in Nepalese women: a comparative study across the menstrual cycle. Frontiers in Medicine, 11 1265067, 1-9. doi: 10.3389/fmed.2024.1265067
Worman, Rachel, Stafford, Ryan E., Cowley, David and Hodges, Paul W. (2024). The relationship between estimates of puborectalis muscle shear modulus made with shear wave elastography and electromyography in healthy men. Continence, 9 101216, 101216. doi: 10.1016/j.cont.2024.101216
Cowley, David, Stafford, Ryan E., Worman, Rachel S. and Hodges, Paul W. (2024). Differences in activation of pelvic floor muscles in response to electrical stimulation in men using different electrode montages. Continence, 9 101215, 101215. doi: 10.1016/j.cont.2024.101215
Cowley, David, Stafford, Ryan E., Worman, Rachel S. and Hodges, Paul W. (2023). Pelvic floor muscle length changes with breathing in males: a preliminary report. Respiratory Physiology & Neurobiology, 316 104117, 1-12. doi: 10.1016/j.resp.2023.104117
Worman, Rachel, Stafford, Ryan E., Cowley, David and Hodges, Paul W. (2023). Methods used to investigate tone of pelvic floor muscles in pelvic health conditions: a systematic review. Continence, 6 100593. doi: 10.1016/j.cont.2023.100593
Stafford, Ryan E., Doorbar‐Baptist, Stuart and Hodges, Paul W. (2022). The relationship between pre‐ and postprostatectomy measures of pelvic floor muscle function and development of early incontinence after surgery. Neurourology and Urodynamics, 41 (8), 1722-1730. doi: 10.1002/nau.25034
Worman, Rachel S., Stafford, Ryan E., Cowley, David, Prudencio, Caroline Baldini and Hodges, Paul W. (2022). Evidence for increased tone or overactivity of pelvic floor muscles in pelvic health conditions: a systematic review. American Journal of Obstetrics and Gynecology, 228 (6), 657-674.e91. doi: 10.1016/j.ajog.2022.10.027
Morin, Mélanie, Salomoni, Sauro E., Stafford, Ryan E., Hall, Leanne M. and Hodges, Paul W. (2022). Validation of shear wave elastography as a noninvasive measure of pelvic floor muscle stiffness. Neurourology and Urodynamics, 41 (7), 1620-1628. doi: 10.1002/nau.25010
Cowley, David, Stafford, Ryan E. and Hodges, Paul W. (2022). The influence of prostatectomy and body position on location and displacement of pelvic landmarks with pelvic floor muscle contraction. Neurourology and Urodynamics, 41 (1), 203-210. doi: 10.1002/nau.24794
Cowley, David, Stafford, Ryan E. and Hodges, Paul W. (2021). The repeatability of measurements of male pelvic floor anatomy and function made from transperineal ultrasound images of healthy men and those before and after prostatectomy. Neurourology and Urodynamics, 40 (6) nau.24701, 1539-1549. doi: 10.1002/nau.24701
Cowley, David, Stafford, Ryan E. and Hodges, Paul W. (2020). Influence of body position on dynamics of the pelvic floor measured with transperineal ultrasound imaging in men. Neurourology and Urodynamics, 39 (3), 1-8. doi: 10.1002/nau.24301
Stafford, Ryan E., Arkwright, John, Dinning, Phil G., van den Hoorn, Wolbert and Hodges, Paul W. (2020). Novel insight into pressurization of the male and female urethra through application of a multi-channel fibre-optic pressure transducer: proof of concept and validation. Investigative and Clinical Urology, 61 (5), 528-537. doi: 10.4111/icu.20200059
Hodges, Paul W., Stafford, Ryan E., Hall, Leanne, Neumann, Patricia, Morrison, Shan, Frawley, Helena, Doorbar-Baptist, Stuart, Nahon, Irmina, Crow, Jason, Thompson, Judith and Cameron, Anne P. (2019). Reconsideration of pelvic floor muscle training to prevent and treat incontinence after radical prostatectomy. Urologic Oncology, 38 (5), 354-371. doi: 10.1016/j.urolonc.2019.12.007
Stafford, Ryan E., Coughlin, Geoff and Hodges, Paul W. (2019). Comparison of dynamic features of pelvic floor muscle contraction between men with and without incontinence after prostatectomy and men with no history of prostate cancer. Neurourology and Urodynamics, 39 (1) nau.24213, 170-180. doi: 10.1002/nau.24213
Aljuraifani, Rafeef, Stafford, Ryan E., Hall, Leanne M., van den Hoorn, Wolbert and Hodges, Paul W. (2019). Task-specific differences in respiration-related activation of deep and superficial pelvic floor muscles. Journal of Applied Physiology, 126 (5), 1343-1351. doi: 10.1152/japplphysiol.00704.2018
Hodges, Paul, Stafford, Ryan, Coughlin, Geoff D., Kasza, Jessica, Ashton-Miller, James, Cameron, Anne P., Connelly, Luke and Hall, Leanne M. (2019). Efficacy of a personalised pelvic floor muscle training programme on urinary incontinence after radical prostatectomy (MaTchUP): protocol for a randomised controlled trial. BMJ Open, 9 (5) e028288, e028288. doi: 10.1136/bmjopen-2018-028288
Aljuraifani, Rafeef, Stafford, Ryan E., Hall, Leanne M. and Hodges, Paul W. (2019). Activity of deep and superficial pelvic floor muscles in women in response to different verbal instructions: a preliminary investigation using a novel electromyography electrode. Journal of Sexual Medicine, 16 (5), 673-679. doi: 10.1016/j.jsxm.2019.02.008
Wyndow, Narelle, Crossley, Kay M., Stafford, Ryan, Vicenzino, Bill, Collins, Natalie J. and Tucker, Kylie (2019). Neuromotor control during stair ambulation in individuals with patellofemoral osteoarthritis compared to asymptomatic controls. Gait and Posture, 71, 92-97. doi: 10.1016/j.gaitpost.2019.03.029
Stafford, Ryan E., van den Hoorn, Wolbert, Coughlin, Geoff and Hodges, Paul W. (2018). Postprostatectomy incontinence is related to pelvic floor displacements observed with trans-perineal ultrasound imaging. Neurourology and Urodynamics, 37 (2), 658-665. doi: 10.1002/nau.23371
Aljuraifani, Rafeef, Stafford, Ryan E., Hug, Francois and Hodges, Paul W. (2018). Female striated urogenital sphincter contraction measured by shear wave elastography during pelvic floor muscle activation: proof of concept and validation. Neurourology and Urodynamics, 37 (1), 206-212. doi: 10.1002/nau.23275
Stafford, Ryan E., Aljuraifani, Rafeef, Hug, Francois and Hodges, Paul W. (2017). Application of shear-wave elastography to estimate the stiffness of the male striated urethral sphincter during voluntary contractions. BJU International, 119 (4), 619-625. doi: 10.1111/bju.13688
Stafford, Ryan E., Ashton-Miller, James A., Constantinou, Constantinou, Coughlin, Geoff, Lutton, Nicholas J. and Hodges, Paul W. (2016). Pattern of activation of pelvic floor muscles in men differs with verbal instructions. Neurourology and Urodynamics, 35 (4), 457-463. doi: 10.1002/nau.22745
Stafford, Ryan E., Coughlin, Geoff, Lutton, Nicholas J. and Hodges, Paul W. (2015). Validity of estimation of pelvic floor muscle activity from transperineal ultrasound imaging in men. PLoS One, 10 (12) A526, e0144342.1-e0144342.12. doi: 10.1371/journal.pone.0144342
Macedo, Luciana Gazzi, Maher, Christopher G., Hancock, Mark J., Kamper, Steve J., McAuley, James H., Stanton, Tasha R., Stafford, Ryan and Hodges, Paul W. (2014). Predicting response to motor control exercises and graded activity for patients with low back pain: preplanned secondary analysis of a randomized controlled trial. Physical Therapy, 94 (11), 1543-1554. doi: 10.2522/ptj.20140014
Stafford, Ryan E., Mazzone, Stuart, Ashton-Miller, James A., Constantinou, Christos and Hodges, Paul W. (2014). Dynamics of male pelvic floor muscle contraction observed with transperineal ultrasound imaging differ between voluntary and evoked coughs. Journal of Applied Physiology, 116 (8), 953-960. doi: 10.1152/japplphysiol.01225.2013
Massery, M., Hagins, M., Stafford, R., Moerchen, V. and Hodges, P. W. (2013). Effect of airway control by glottal structures on postural stability. Journal of Applied Physiology, 115 (4), 483-490. doi: 10.1152/japplphysiol.01226.2012
Stafford, Ryan E., Ashton-Miller, James A., Constantinou, Christos E. and Hodges, Paul W. (2013). A new method to quantify male pelvic floor displacement from 2D transperineal ultrasound images. Urology, 81 (3), 685-689. doi: 10.1016/j.urology.2012.11.034
Stafford, Ryan E., Ashton-Miller, James A., Constantinou, Christos E. and Hodges, Paul W. (2012). Novel insight into the dynamics of male pelvic floor contractions through transperineal ultrasound imaging. Journal of Urology, 188 (4), 1224-1230. doi: 10.1016/j.juro.2012.06.028
Macedo, Luciana Gazzi, Latimer, Jane, Maher, Christopher G., Hodges, Paul W., McAuley, James H., Nicholas, Michael K., Tonkin, Lois, Stanton, Chris J., Stanton, Tasha R. and Stafford, Ryan (2012). Effect of motor control exercises versus graded activity in patients with chronic nonspecific low back pain: A randomized controlled trial. Physical Therapy, 92 (3), 363-377. doi: 10.2522/ptj.20110290
Stafford, Ryan E., Ashton-Miller, James A., Sapsford, Ruth and Hodges, Paul W. (2012). Activation of the striated urethral sphincter to maintain continence during dynamic tasks in healthy men. Neurourology and Urodynamics, 31 (1), 36-43. doi: 10.1002/nau.21178
Schabrun, Siobhan M., Stafford, Ryan E. and Hodges, Paul W. (2011). Anal sphincter fatigue: Is the mechanism peripheral or central?. Neurourology and Urodynamics, 30 (8), 1550-1556. doi: 10.1002/nau.21162
Stafford, Ryan E., Sapsford, Ruth, Ashton-Miller, James and Hodges, Paul W. (2010). A novel transurethral surface electrode to record male striated urethral sphincter electromyographic activity. Journal of Urology, 183 (1), 378-385. doi: 10.1016/j.juro.2009.08.105
Macedo, Luciana G., Latimer, Jane, Maher, Chris G., Hodges, Paul W., Nicholas, Michael, Tonkin, Lois, McAuley, James H. and Stafford, Ryan (2008). Motor control or graded activity exercises for chronic low back pain?; A randomised controlled trial. BMC Musculoskeletal Disorders, 9 (1) 65, x-x. doi: 10.1186/1471-2474-9-65
Stafford, R. J., Schluter, P., Kirk, M., Wilson, A., Unicomb, L., Ashbolt, R. and Gregory, J. (2007). A Multi-Centre Prospective Case-Control Study of Campylobacter Infection in Persons Aged 5 Years and Older in Australia. Epidemiology and Infection, 135 (6), 978-988. doi: 10.1017/S0950268806007576
McCall, B., McCormack, J. G., Stafford, R. and Towner, C. (1999). An Outbreak of Salmonella typhimurium at a teaching hospital. Infection Control and Hospital Epidemiology, 20 (1), 55-56. doi: 10.1086/501551
Conference Papers
Hodges, P., Stafford, R. and Coughlin, G. (2019). Dynamic features pelvic floor muscle contraction differ between men with and without incontinence after prostatectomy and men with no history of prostate cancer. 49th Annual Meeting of the International Continence Society (ICS), Gothenburg, Sweden, 3-6 September, 2019. Hoboken, NJ United States: Wiley-Blackwell Publishing. doi: 10.1002/nau.24118
Hodges, P., Stafford, R., van den Hoorn, W., Papageorgiou, A. and Arkwright, J. (2019). Novel insight into pressurization of the male and female urethra through application of a multi-channel fibre-optic pressure transducer: proof of concept and validation. 49th Annual Meeting of the International Continence Society (ICS), Gothenburg, Sweden, 3-6 September, 2019. Hoboken, NJ, United States: John Wiley & Sons. doi: 10.1002/nau.24118
Morin, M., Salomoni, S., Stafford, R., Hall, L. and Hodges, P. (2019). Validation of shear-wave elastography for evaluating pelvic floor muscle stiffness. 49th Annual Meeting of the International Continence Society (ICS), Gothenburg, Sweden, 3-6 September, 2019. Hoboken, NJ United States: Wiley-Blackwell Publishing.
Hodges, Paul W. and Stafford, R. (2016). Differences in activation of the urethral muscles between men with and without urinary incontinence after radical prostatectomy revealed by transperineal ultrasound imaging. ANZUP Annual Scientific Meeting, GU Cancer: Expanding our Horizons, Brisbane, QLD, Australia, 10-12 July 2016. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing. doi: 10.1111/ajco.12558
AlJuraifani, R., Stafford, R. and Hodges, P. (2016). Superficial and Deep Pelvic Floor Muscles Activation Is Influenced by Different Verbal Instructions to Achieve a Voluntary Contraction. Annual Meeting of the International Continence Society (ICS), Tokyo Japan, 13-16 September 2016. Hoboken, NJ United States: John Wiley & Sons.
Hodges, Paul, Stafford, Ryan and Hug, Francois (2015). Interpretation of transperineal ultrasound imaging of pelvic floor muscle contraction in men. 2nd Prostate Cancer World Congress (PCWC), Cairns, Australia, 17-21 August 2015. HOBOKEN: WILEY-BLACKWELL.
Hodges, Paul, Stafford, Ryan and Salomoni, Sauro (2015). Diverse function of the pelvic floor muscles in men: investigation of the speech-related activation of the striated urethral sphincter and puborectalis muscles. 2nd Prostate Cancer World Congress (PCWC), Cairns Australia, Aug 17-21, 2015. Chichester, West Sussex, United Kingdom: Wiley-Blackwell Publishing. doi: 10.1111/bju.13197
Stafford, R. and Hodges, P. (2013). Dynamics of Male Pelvic Floor Contraction Observed with Transperineal Ultrasound Imaging Differ Between Voluntary and Evoked Coughs. 43rd Annual Meeting of the International-Continence-Society (ICS), Barcelona Spain, Aug 26-30, 2013. Hoboken, United States: Jossey Bass, Ed. & Pub.. doi: 10.1002/nau.22472
Schabrun, S., Stafford, R. and Hodges, P. (2011). Voluntary activation declines rapidly during pelvic floor muscle fatigue. World congress on Physical Therapy, Amsterdam, The Netherlands, 20 - 23rd June 2011. Oxford, England, U. K.: Elseiver. doi: 10.1016/j.physio.2011.04.002
Hodges, P., Schabrun, S. and Stafford, R. (2010). Pelvic floor muscles have greater central fatigue during voluntary contractions than muscles of the limbs. Joint Meeting of the International Continence Society and the International Urogynecological Association (ICS-IUGA 2010), Toronto, Canada, 23-27 August 2010. Hoboken, NJ, United States: John Wiley & Sons. doi: 10.1002/nau.20973
Hodges, P., Schabrun, S. and Stafford, R. (2010). Pelvic floor muscles have greater central fatigue during voluntary contractions than muscles of the limbs. Joint Meeting of the International Continence Society and the International Urogynecological Association (ICS-IUGA 2010), Toronto, Canada, 23-27 August 2010. Guildford, Surrey, United Kingdom: Springer UK.
Hodges, P, Stafford, R and Sapsford, R (2008). Viability of a novel electrode to record activity of the male rhabdosphincter. 38th Annual Meeting of the International-Continence-Society, Cairo Egypt, Oct 20-24, 2008. MALDEN: WILEY-BLACKWELL.
Data Collection
Stafford, Ryan, Hodges, Paul, Lutton, Nicholas and Coughlin, Geoff (2015). Validity of estimation of pelvic floor muscle activity from transperineal ultrasound imaging in men. The University of Queensland. (Collection) doi: 10.14264/uql.2015.1104
Thesis
Stafford, Ryan (2013). The function of the male pelvic floor: Old questions investigated through new methods. PhD Thesis, School of Health & Rehabilitation Sciences, The University of Queensland.