Singers and SLPs listen up! If you have ever heard of Vocal Function Exercises (a staple in our field since Joe Stemple and team introduced the early concept in 1994) you may have someone recommend them to you. But have you wondered if you could modify them and still get a good warm up effect on your vocal cords? What if you wanted to do less SOVT? Would changing it to /a/ be harmful by causing hyperfunction of the voice box?
Joe Stemple, Richard Andreatta, Dan Croake, Vrushali Angadi, Megan Brown and Maria Bane for a 2019 study, rounded up some folks with no voice disorders and set out to answer these questions.
Original Vocal Function Exercises were completed as you see here:
Eeeeee, oooooo, ooooooo, oooooox5 starting on middle C for females and an octave below for males
SO WEIRD!
Why the weird mouth postures? Well, semi occluded vocal tract modifications actually occlude the vocal tract partially and keep the cords slightly separated due to the build up of positive intraoral pressure. Parallel vocal cords lessen the physical effort and improve vocal economy.
What happened when they looked at modifications to the SOVT component? They had the people practice VFE’s twice daily for 6 weeks. One group did traditional VFE’s, the second modified them to include no nasality and a less occluded /o/ and the third again did no nasality and a less occluded /a/.
THE MAGIC…
What is the magic bullet for VFE’s, or the thing that makes them so special? The Mechanism of change? It is semi occlusion and active ingredient of the VFE’s, so you should know this if you’re trying to improve voice box efficiency and economy for yourself or your patients.
The /a/ phoneme? Caused no swelling, lesions or redness. SWEET! It also resulted in the greatest maximum phonation time (or ability to hold out a single /a/ note) so if your patient’s goal is this, consider this modification with no fear for any hyperfunction.
What happens after you stop the regimen? The modified groups improved how long they could hold out a sound. And after they stopped the practice for 6 weeks, all groups declined in the ability to hold the sound out as long. If you don’t use it, you lose it.
What if people have trouble with SOVT /o/? Modified /o/ can be easier for people to complete, and might be the difference in confidence for them to complete the exercises at all. (singers versus non singers, introverts vs extroverts)
INTERPRETATION:
Remember, this study looked at people with non-disordered voices, so be careful when drawing general conclusions for the disordered population based on what they found. Researchers are awesome humans and we rely on them in the trenches of real life clinical practice.
WANT MORE?
I created a downloadable product with a PDF of Vocal Function Exercise handouts plus video models for original pitches and modified ones. You can find it here:
If you want more reading on this study, here is the reference:
Bane, M., Brown, M., Angadi, V., Croake, D. J., Andreatta, R. D., & Stemple, J. C. (2019). Vocal function exercises for normal voice: With and without semi-occlusion. International journal of speech-language pathology, 21(2), 175–181. https://doi.org/10.1080/17549507.2017.1416176
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About the Author: Kristie Knickerbocker, MS, CCC-SLP, is a speech-language pathologist and singing voice specialist in Fort Worth, Texas. She evaluates and rehabilitates voice, upper airway disorders and swallowing at her private practice, ATEMPO Voice Center, and lectures on voice science internationally. She is a classically trained mezzo soprano with a minor in vocal performance from Texas Christian University. She hhttps://www.passaggioeducation.comas collaborated on and authored multiple peer reviewed published research articles about her community-based voice specialty clinic. She continues to develop a line of instantly downloadable voice assessment and voice therapy materials on TPT or her ATEMPO voice center website. Follow her on Pinterest, on Instagram or like her on Facebook. Kristie mentors on voice, upper airway, business and private practice through www.atempovoicecenter.com and provides continuing education courses through www.passaggioeducation.com.
