EMG is a helpful tool to observe pelvic floor muscle activity and how it is influenced by everything from regional musculoskeletal factors and mucosal health, to client motor control, awareness, and comfort.
In this post I will discuss the case of one client who was referred for dyspareunia treatment, and whose SEMG findings are outlined in Figures 1-3. She had validated test item clusters for right hip labral tear as well as femoral acetabular impingement, in addition to right sided pelvic floor muscle overactivity and sensitivity with less than 3 ounces of palpation pressure.
The figures below demonstrate peri-anal SEMG response of pelvic floor muscles within a single treatment session, which included sacral unloading in supine as well as hip joint mobilization to demonstrate the relationship between her pelvic floor and her hips. Our focus for this SEMG downtraining treatment was to enable her to understand the connection between her pelvic floor muscle holding patterns and her body’s preferences to remain out of ranges of motion that impinged and irritated her hip.
At the peak of my racing career I won awards in all my races from 5k to marathon. While warming up I would scope out my competition, intimidated by muscular females wearing outfits to accentuate their physiques. Many times, appearance out-weighed running capacity. In a similar manner, one strong pelvic floor contraction produced by a female athlete does not always mean she has the endurance to stay dry in the long run.
Brennand et al. (2017) researched urinary leakage during exercise in Canadian women. A summary of their findings concluded that skipping, trampoline, jumping jacks, and running/jogging were most likely to cause leakage. To combat the problem, 93.2% emptied their bladder just before exercise, 62.7% required voiding breaks during exercise, and 37.3% actually restricted their fluid intake to minimize leakage. While 90.3% of women who reported leakage impacted their activity just decreased their intensity, 80.7% avoided the activity entirely. Many women used pads (49.2%). Interest in pelvic floor physiotherapy to improve their UI was high (84.6%), but 63.5% of women still sought pessary or surgical management. Unfortunately, 35.6% of the women had no idea treatment was even an option.
Nygaard & Shaw (2016) reviewed and summarized the cross-sectional studies regarding the association between physical activity and pelvic floor disorders. Trampolinists, especially those in the 3rd tertile of competition, even those who were nulliparous, experienced greater leakage. Competitive athletes in the highest quartile of time exercising were found to have 2.5 times the amount of urinary incontinence (UI) as the lowest inactive quartile; however, 2nd and 3rd quartile recreational athletes had no difference in UI compared to inactive women. Type and dosage of exercise were both factors in UI risk. Various studies showed habitual walking decreased UI in older women, moderate exercise decreased the risk of UI, and no exercise increased the risk of UI. The incidence of UI being related to having performed strenuous exercise early in life has been limited and variable, with one study of Norwegian athletes and US Olympians not having any greater UI later in life, while another showed middle-aged women who used to exercise 7.5 hours per week had a higher incidence of UI. This review also reported athletes had a 20% greater cross sectional area of the levator ani muscle and a greater pubovisceral muscle mean diameter; however, the pelvic floor strength recorded was lower than non-athletes.
Everyone experiences constipation, sometime! Maybe it was on vacation and you felt bloated and miserable; or when you were busy at work and had to rush to complete a task. In any event, you felt ‘awful’. Maybe you couldn’t zip your favorite jeans due to abdominal bloating, maybe you experienced lower abdominal discomfort or experienced a painful ‘movement’ once you went. There are many people who experience these symptoms and more on a daily basis. When someone finally gets the courage to see a specialist about this problem, they might be diagnosed with ‘pelvic floor dyssynergia’ or ‘muscle incoordination’.
Pelvic muscle dyssysnergia (incoordination) refers to the action that occurs in the pelvic floor musculature at the time of defecation. It can become a withholding pattern and in the case of vacation or a change in your work schedule, it can simply be tensing the muscle to avoid the bowel movement (due to inconvenience) rather than heeding the ‘call’. Over time, if this behavior is repeated, it becomes muscle memory; instead of relaxing the pelvic muscle to defecate, the patient tenses the muscle; thus the term dyssynergia or incoordination. The function of the pelvic floor for bowel function is to provide closure of the anal canal to maintain continence. The muscle should signal the rectum and the colon when to defecate and should provide opening of the anal canal by total relaxation to allow for complete and effortless elimination. A dyssynergic pattern shuts the opening of the canal by tensing the muscle to prevent elimination. Thus an incoordination.
The research by Heymen, Scarlett, Ringman, Drossman et al entitled “Randomized, Controlled Trial Shows Biofeedback to Be Superior to Alternative Treatments for Patients with Pelvic Floor Dyssynergia-Type Constipation” supports the value of biofeedback in the treatment of this withholding pattern associated with stool elimination. This study supports the benefit of biofeedback treatments using internal sensors to provide the feedback displayed on a computer screen for visualization. This study goes on to say, “We also have shown that the machines are necessary—instrumented biofeedback is an essential element of successful training; however, there is a shortage of practitioners who are trained to provide this form of biofeedback, and there are few clinics where biofeedback instruments are available and where this form of biofeedback can be obtained”.
Today's blog is a contribution from Kristen Digwood, DPT, CLT, of the Elite Pelvic Rehab clinic in Wilkes-Barre, PA.
Urgency urinary incontinence (UUI), which is the involuntary loss of urine associated with urgency, is a common health problem in the female population. The effects of UUI result in limitations to daily activity and quality of life.
Current guidelines recommend conservative management as a first-line therapy in urinary incontinence, defined as "interventions that do not involve treatment with drugs or surgery targeted to the type of incontinence".
Allison Ariail, PT, DPT, CLT-LANA, BCB-PMD, PRPC is a published researcher and practitioner who has worked in the realms of brain injury, lymphedema, and oncology. Now she's leading the charge to encourage rehabilitation practitioners to utilize ultrasound diagnostic imaging with their patients, and you can learn these techniques in her Rehabilitative Ultrasound Imaging - Women's Health and Orthopedic Topics course taking place May 1 - 3 in Dayton, OH. We've partnered with SonoSite to make the best ultrasound equipment available for participants in this course.
Most of us are treating patients who have back pain of some nature, and we know the importance of the local stabilizing muscles including the transverse abdominis, the lumbar multifidus, and the pelvic floor muscles. These muscles work together to provide tension and create a corset of stability throughout the trunk. A common goal is to rehabilitate these muscles in order to restore motor control and strength, but the muscle depth can make them difficult to assess and palpate.
I recently read a study that is looking at the development of a test to identify lumbar multifidus function. Herbert et al. found promising results when looking at this “multifidus lift test” for inter-rater reliability and concurrent validity to identify dysfunction in the multifidus. They compared the results of this test with real-time ultrasound imaging of the lumbar multifidus. Inter-rater reliability was excellent and free from errors of bias and prevalence. Concurrent validity was demonstrated through its relationship with the reference standard results at L4-L5, but not so much for L5-S1. This preliminary research supports the reliability and validity of the multifidus lift test to assess lumbar multifidus function at some spinal levels. If this test could be further validated for other spinal levels it would be very beneficial for therapists who are using a specific stabilization program to treat patients.
Faculty member Lila Bartkowski- Abbate PT, DPT, MS, OCS, WCS, PRPC teaches the Bowel Pathology, Function, Dysfunction and the Pelvic Floor course for Herman & Wallace. Join her in Tampa on April 2-3, or one of the other two events currently open for registration.
Constipation, an often under reported health issue, afflicts about 30% of Americans. ¹ The diagnosis of chronic constipation may seem like a simple concept, however the etiology of chronic constipation presents itself in many different forms. Dyssynergic defecation is one of many factors that can lead to a presentation of chronic constipation in a patient. Dyssynergic defecation or “paradoxical contraction” occurs when the muscles of the abdominals, puborectalis sling, and external anal sphincter function inappropriately while attempting a bowel movement. ² The lack of coordination of these muscles results in a contraction versus a lengthening of the pelvic floor muscles with baring down. Dyssynergic defecation is different than a structural issue such as a rectocele or hemorrhoids causing the inability to pass stool effectively or constipation due to slow colon transit time or pathological disease. Making the diagnosis of dyssynergic defecation by symptoms alone is often not reliable secondary to overlap of similar symptoms with chronic constipation due to factors such as a structural issue, irritable bowel syndrome (IBS), or irritable bowel disease (IBD). The diagnosis of dyssynergic defecation can be difficult and is often made through physiologic testing such as balloon expulsion testing or MRI with defecography. ² However, physical therapists can often manually feel that a paradoxical contraction is happening when asking a patient to bare down on evaluation.
Patients with dyssynergic defecation may present to pelvic floor physical therapy with complaints of: ¹ ²
As pelvic rehabilitation providers, it may be safe to assume a lot of us are treating adults with bladder and bowel dysfunction. Often we get questions from these patients about treatment for children with voiding dysfunction. How comfortable are we treating children for these problems and what would we do? Pediatric voiding dysfunction and bowel problems are common and can have significant consequences to quality of life for the child and the family, as well as negative health consequences to the lower urinary tract if left untreated. No clear gold standard of treatment for pediatric voiding dysfunction has been established and treatments range from behavioral therapy to medication and surgery.
A randomized controlled trial in 2013 that was published in European Journal of Pediatrics, explores treatment options for pediatric voiding dysfunction. Pediatric voiding dysfunction is defined as involuntary and intermittent contraction or failure to relax the urethral striated sphincter during voluntary voiding. The dysfunctional voiding can present with variable symptoms including urinary urgency, urinary frequency, incontinence, urinary tract infections, and abnormal flow of urine from bladder back up the ureters (vesicoureteral reflux).
The 2013 study compared 60 children over one year who were diagnosed with dysfunctional voiding into two treatment groups. One group received behavioral urotherapy combined with PFM (pelvic floor muscle) exercises while the other group received just behavioral urotherapy. The behavioral urotherapy consisted of hydration, scheduled voiding, toilet training, and high fiber diet. Voiding pattern, EMG (electromyography) activity during voids, urinary urgency, daytime wetting, and PVR (post-void residue) were assessed at the beginning and end of the one year study with parents completing a voiding and bowel habit chart as well as uroflowmetry with pelvic floor muscle sEMG (surface electromyography) was administered to the child for voiding metrics.
Sexual dysfunction is a common negative consequence of Multiple Sclerosis, and may be influenced by neurologic and physical changes, or by psychological changes associated with the disease progression. Because pelvic floor muscle health can contribute to sexual health, the relationship between the two has been the subject of research studies for patients with and without neurologic disease. Researchers in Brazil assessed the effects of treating sexual dysfunction with pelvic floor muscle training with or without electrical stimulation in women diagnosed with multiple sclerosis (MS.) Thirty women were allocated randomly into 3 treatment groups; 20 women completed the study. All participants were evaluated before and after treatment for pelvic floor muscle (PFM) function, PFM tone, flexibility of the vaginal opening, ability to relax the PFM’s, and with the Female Sexual Function Index (FSFI). Rehabilitation interventions included pelvic floor muscle training (PFMT) using surface electromyographic (EMG) biofeedback, neuromuscular electrostimulation (NMES), sham NMES, or transcutaneous tibial nerve stimulation (TTNS). The treatments offered to each group are shown below.sEMG biofeedbackSham NMESIntravaginal NMESTTNSGroup 1 (n=6)XX Group 2 (n=7)X X Group 3 (n=7)X X
The following factors made up the inclusion criteria for the study: age at least 18 years, diagnosis of relapsing-remitting MS, and a 4 month history of stable symptoms. All of the participants were sexually active and were found to be able to contract pelvic floor muscles correctly. Group 1 patients were treated with “sham” electrical stimulation using surface electrodes placed over the sacrum at a pulse width of 50 ms and a frequency of 2 Hz. Patients in Group 2 used an internal (vaginal) electrode at 200 ms at 10 Hz. Group 3 were given transcutaneous tibial nerve stimulation at 200 ms and 10 Hz. All groups followed these treatments with pelvic floor muscle exercises using a vaginal sensor and biofeedback.
Therapists are increasingly learning about and treating pediatric patients who have pelvic floor dysfunction, yet there are still not enough of them to meet the demand. Many therapists I have spoken to are understandably concerned about how to transfer what they have done for adult patients to a younger population. Here are some of the more common concerns therapists express or questions they ask in relation to the pediatric population:Can we use biofeedback with children?Do we complete internal assessments on kids?How do we change the way we talk to the children?How much do we have to teach the parents to get the information across?Why do we teach strengthening even if some of the kids mostly need relaxation or coordination?
Although each question deserves a longer answer, we can start with biofeedback, and the answer is a resounding “yes”. There is abundant research affirming the potential benefit of biofeedback training for children with pelvic floor dysfunction. And no, we do not typically complete an internal pelvic muscle assessment on children, as that would not be appropriate. Considering that pediatrics can refer to young adults up to age 18-21, there may be a reasonable clinical goal in mind for utilizing internal assessment or treatment. The words we use when we speak to children become very important. Herman & Wallace faculty member Dawn Sandalcidi (known as “Miss Dawn” to her younger patients) gives ample strategies for adapting our language in her continuing education course Pediatric Incontinence and Pelvic Floor Dysfunction. For example, Dawn emphasizes the importance of describing an episode of incontinence as a “bladder leak” and of pointing out to a child that his or her bladder leaked, rather than the child leaking. She also likes to encourage parents and school personnel to drop the term “accident” from vocabulary. In her 2-day course, Dawn also teaches therapists how to train children to become a “Bladder Boss”, and how to teach young patients about relevant anatomy.
The way we teach anatomy to kids is really important in making sure they “get” it. One study published in 2012Equit 2013 describes the results when children are asked to draw a urinary tract in a body diagram. Only half of the children drew a bladder and other organs, and nearly 43% of the children drew “anatomically incorrect pictures.” The authors point out that older children and the ones who had gone through group training for bowel and bladder were more likely to draw correct images. For the last question about teaching contract/relax exercises to children, I had an opportunity to ask Dawn this question recently when she was filming a pediatrics course for MedBridge Education. Her answer emphasized the importance of getting children to develop awareness of the pelvic muscles, and to improve their coordination as well as strength- concepts that participating in an exercise program can work toward.
What are you saying when giving directions to men during pelvic floor muscle training, and how do those instructions affect the effectiveness of a contraction? These questions are tackled in a study that is very interesting to therapists working in pelvic dysfunction. 15 healthy men ages 28-44 (with no prior training in pelvic floor training) were instructed to complete a submaximal effort pelvic muscle contraction. Tools utilized to acquire data in the study include those below:Assessment toolMeasuringTransperineal ultrasounddisplacement of pelvic floor landmarksSurface EMG (electromyography)abdominal, anal sphincter muscle activationNasogastric transducerintra-abdominal pressure (IAP)Fine wire electromyography (3 participants only)puborectalis, bulbocavernosus muscles
Participants sat upright on a plinth (backrest reclined at ~20 degrees with their knees extended). Directions for the submaximal efforts were given by telling the men to produce a level 3/10 effort with 10 being a maximal contraction. The men were instructed to hold the contraction for 3 seconds, and they were given 10 seconds rest between each of the 4 contractions using different verbal cues. (This series of 4 contractions was repeated with randomization for verbal cues, with a 2 minute rest in-between.) Verbal instructions were intended to target specific contractile tissues as described below- some of this theory could be validated via the fine wire EMG.Verbal cueTargeting"tighten around the anus"anal sphincter"elevate the bladder"puborectalis"shorten the penis"striated urethral sphincter"stop the flow of urine"striated urethral sphincter, puborectalis
Displacement, IAP, and abdominal/anal EMG were compared for the different verbal instructions. The greatest dorsal displacement of the mid-urethra and striated urethral sphincter activity was noted with the instruction to "shorten the penis." "Elevate the bladder" encouraged the greatest increase in abdominal EMG and IAP, while "tighten around the anus" induced the greatest anal sphincter activity. Displacement of pelvic landmarks correlated with EMG readings of the muscles thought to produce the targeted movement. The authors conclude that the therapist's choice of verbal instructions can influence the muscle activation and urethral movement in men. They suggest "shorten the penis" and "stop the flow of urine" for optimal activation of the striated urethral sphincter. They also point out the fact that by using the fine wire EMG and correlating muscle activation to observations with the transperineal ultrasound, the study validates the use of the less invasive method. If you are ready to jump into more education about male pelvic rehabilitation, join us in Denver in early August, or Seattle in November.