I-PRO. Nope, it’s not a new app for the iPad. It stands for I
Isometric is a sustained movement. Wikipedia:
- “Isometric exercise, a form of resistance exercise in which one’s muscles are used in opposition with other muscle groups, to increase strength, for bodybuilding, physical fitness, or strength training.”
Our field has definitely moved in the direction of exercise-based dysphagia therapy investigating resistance, intensity, repetitions.
Evidence has shown us that resistance has a huge impact on our exercise. Look at sticking your tongue out 10 times, compared to pushing your tongue against a tongue depressor 10 times. Weight lifters don’t build muscle or strength by simply moving their arms up and down. They add weight and continue to increase that weight.
I’ve been reading articles by Dr. Joanne Robbins for a while. She has compared exercises using the Iowa Oral Performance Instrument
or (IOPI). Her research consistently looks at subjects given 8 weeks of therapy or exercise. She’s researched patients using the IOPI vs. no exercise and found that those patients given a regimen of exercise for the tongue using resistance increased tongue mass (as measured by MRI), tongue strength (as measured by the IOPI) and actually lowered Penetration/Aspiration
scores, meaning decreased penetration and/or aspiration.
In another study, she found that there was no difference in using the IOPI vs. using a standard tongue depressor, pushing the tongue against the depressor elevated, anterior and lateral (both sides).
Dr. Robbins has also created her own lingual strengthening device called the MOST (Madison Oral Strengthening Therapeutic) which is now called SwallowStrong
. This device works much like the IOPI, however provides various sensors, exercising different areas of the tongue (the IOPI utilizes a single bulb.)
I was excited to find this article:
Juan J, Hind J, Jones C, McCulloch T, Gangnon R, Robbins J. Case Study: Application of Isometric Progressive Resistance Oropharyngeal Therapy Using the Madison Oral Strengthening Therapeutic Device. Top Stroke Rehabil. 2013 Sep-Oct;20(5):450-70. doi: 10.1310/tsr2005-450
I-PRO is definitely a (new?) tool for your dysphagia toolbox!
This study looked at a single patient. A 56 year old female, 27 months s/p CVA. This patient had undergone behavioral interventions (“swallow-specific maneuvers (eg, supraglottic swallow), swallowing sensory stimulation/enhancement (eg, thermal stimulation), postural strategies (eg, head turn), and dietary modification”), UES dilatations and G-Tube with expectoration of saliva. She also had outpatient services including, as the authors state “traditional dysphagia therapy and an intensive, daily home practice program including swallowing-specific maneuvers (eg, Mendelsohn), range of movement exercises, and electrical stimulation (E-stim) during saliva swallowing tasks.”
Following traditional therapy: Video Fluorscopic Swallow Study (VFSS) was completed to see the anatomy and physiology of the swallow, looking at 12 swallows and 4 bolus consistencies. Patient was observed with liquid pooling on the vocal folds, liquid pooling in the pyriform sinus, minimal right-sided UES opening, aspiration of liquids and decreased lingual strength as measured by the IOPI.
The patient then was introduced to 8 weeks of I-PRO Therapy with a focus on the anterior and posterior tongue, followed by 5 weeks of detraining and 9 weeks of I-PRO maintenance with decreased frequency.
During the 8 weeks of I-PRO, the patient completed 10 lingual press exercises (anterior and posterior portions of the tongue) 3x/day, 3 days/week.
Detraining included 5 weeks of no lingual strengthening. After the detraining session, patient was found to have decreased isometric pressure with reduced UES oepning.
A 9 week program of I-PRO Therapy followed the detraining, which included a less intense I-PRO program. After the maintance program, anterior lingual pressure returned to the same level that it was after the 8 weeks of intervention.
Quality of Life was measured using the SWAL-QOL
, a diet inventory was completed, lingual pressures and volumes were measured pre and post therapy.
Post I-PRO therapy, the patient went from total NPO with expectoration of saliva to a full, unrestricted oral diet, lingual pressure and volume increased with transference to increased swallowing pressure, post-swallow residue was decreased per follow-up VFSS, UES and pharyngeal pressures increased with increased UES opening (as measured by manometry) and quality of life increased.
The patient had improved swallow safety, increased to oropharyngeal intake.
Exercise needs to count for our patients. According to exercise science literature, 10 reps, 3 times/day, 3 days/week for 8 weeks is what is recommended.
Can’t afford the devices ranging from roughly $900-$2500?? Invest in some tongue depressors to add to that toolbox! We all have those anyway, right??