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Let’s Begin with Music (the good)!
Music has always been a part of my life. My parents were both musically talented, and so were my three siblings. With my sisters, I sang every popular song of the day. I played piano, clarinet, and flute. I have performed in musical theatre, sung solos at recitals, and participated in two adult women’s choirs. During my 32-year teaching career, I directed several extracurricular choirs (long before Glee was popular).
The music in my fitness class is chosen to keep participants interested, even to keep their minds off the sometimes boring or monotonous “work” of exercise. Trying to reach everyone’s particular interests in music, I play a mix of pop, jazz, oldies, country, rock, and classical. To me, music is a very important component of the class — both for one’s mood and for one’s health and well-being. Research also indicates that it can help in balance training. For more information about this see also: Music and Exercise Class: Inspirational or Soothing.
Music Therapy: Does it work?
Music therapy has been used to help those afflicted with stroke, epilepsy, depression, or autism — to name just a few. Relaxing music has been used with meditation and stretching as well. There have been studies as to the effectiveness of these things, with some mixed results, but there is an overall acceptance that music can be healing.
Researchers found that music may have benefits for our health and specifically for our balance. This research with the long title recently caught my eye: The Effect of Music-Based Multitask Training on Gait, Balance, and Fall Risk in Elderly People.
The researchers of this study already knew that “falls occur mainly while walking or performing concurrent tasks.” They wondered “if a music-based multitask exercise program could improve gait and balance and reduce fall risk in elderly individuals.”
They conducted a 12-month study involving 134 individuals older than 65 years, who were at increased risk of falling, partly because they were living in a care facility. They were divided into two groups: One group was involved in a “six-month multitask exercise program performed to the rhythm of piano music.” The other group received no special instruction or training for six months, and then were given the same instructions as the first group. Participants were tested for their gait and balance stability at the beginning and the end of the programme.
At the end of the six months, they discovered that there were fewer falls in the intervention group and a lower risk of falling. Similar changes occurred in the delayed intervention control group during the second six-month period with intervention. And even more important: “The benefit of the intervention on gait variability persisted 6 months later.”
The researchers concluded that “a 6-month music-based multitask exercise program improved gait under dual-task condition, improved balance, and reduced both the rate of falls and the risk of falling,” particularly in older people.
This was a small study, but an interesting one. And, if music — in this case, piano music — helps older adults to improve their balance, might it also be helpful to younger people? And if piano music works, why not other kinds of music? There’s no clear answer to those questions without further research, but logic suggests that we can extrapolate from this that there may be many benefits from moving to music. It’s worth keeping in mind.
And now the bad: Can music be too loud in fitness class?
The short answer is: Yes!
In fitness class, your ears can suffer from two sources: the music played by the instructor, or the mike the instructor uses. If you are in an aerobics class, it is assumed that you wish to maintain or improve your health. But while you are exercising your heart, are you harming your hearing? It is possible!
In the U.S., the Environmental Protection Agency has safety guidelines for what is dangerous sound, so the American Council on Exercise (ACE) — the professional organization for aerobics instructors in the States — was concerned about noise levels in aerobics classes. They decided to study it and recommend guidelines for safe music volume in fitness classes. Three fitness clubs in northern Virginia were used for the research.
According to the researchers, “It is almost impossible to find a class that does not involve dangerously high sound intensity. Typically the instructor revs up the music, sets the neck mike above the music and overloads the amplifier. As a result, exercise commands are delivered with lots of high frequency static destroying the consonants.”
This study discovered that the sound levels in most aerobics classes was close to that of a jackhammer!
And the ugly: What is too loud and how much damage can be done?
Sound intensity is measured in decibels (dB). Normal conversation is about 50-65 dB, busy traffic noise is 70 -80 dB, and a jackhammer is 90 -120 dB. Sound is too loud (and can damage your hearing) when you cannot carry on a conversation with someone beside you.
How long you are exposed to the sound is just as important as how loud it is. The researchers stated: “At 85 db the EPA standard for safe sound is 45 minutes. ACE's certification guidelines for aerobics instructors and their teaching facilities state that sound levels for aerobics classes should be in the range of 70-80 db.”
An explosion can cause damage instantly. Regular exposure to loud music, such as in an aerobics class or a rock concert, will happen more slowly but 30 minutes to an hour of daily exposure will cause long-term damage. Because the first loss of hearing is in the high frequencies, static sounds are more damaging than low frequency sounds — so, the researchers suggested that you should add 5 db to get the equivalent hazard level.
As sound enters the ear, it vibrates the eardrum and moves on to three delicate bones in the middle ear. The deepest of those three bones has a membrane that vibrates, sending waves to the fluid-filled portion of the inner ear. It is there — at the inner ear — that the loudness and frequency information is processed and sent to the brain by way of delicate hair cells. If sounds are too loud, hair cells can break, fuse, or even disintegrate; if that happens, information is lost on its way to the brain.
If this has happened to you, your hearing may already be at risk:
- Unable to converse with others while in class.
- Ringing in your ears after class.
- Unable to hear well after class.
- A threshold shift after class: If you listen to the radio after an aerobics class and find yourself turning it up, then surprised the next morning at how loud the volume is, this is a temporary threshold shift. It means you are on your way to permanent damage.
How can you protect yourself?
- Wear earplugs. These are sold in drug stores. Manufacturers claim they will reduce the sound by 30 dB. Roll them tightly and then insert so they expand to fill the ear canal.
- Buy a dB meter. This is a small investment compared to the cost of hearing aids. And guess what? There are Apps for this; take a look at the App Store.
- Educate your instructor...diplomatically: If the music is too loud, the instructor may not realize how damaging it is. Ask them, diplomatically, to lower the music, as well as their mike.
During the study mentioned above, the researchers found fitness personnel were very unaware of the dangers of loud music or improperly used instructor mikes. “At one national club the membership staff ... were unable to find any guidelines for sound levels.” The researchers concluded that “Teaching aerobics at high sound levels is a learned behaviour and most instructors are unwilling to change. [They] cannot distinguish dangerous sound levels without a meter.”
We don't have to engage in unhealthy practices
Just because everyone seems to be enjoying the music doesn’t mean it’s not harming them. However, you can protect your ears, and still take aerobics class. Fitness participants will not hesitate to turn on a fan or open a window to adjust the ventilation of the room, complain about someone else wearing perfume which makes them dizzy or ill, or not attend class if the building smells of paint. Why, then, do we allow our ears to be bombarded with unnecessary sound? Music can be a great motivator and soother; it doesn’t have to destroy our hearing.
There is another issue here as well: Age. Younger people tend to tell older people that they just don’t appreciate the “enjoyment” of loud music. But hearing damage happens at any age: no one is immune.
As a fitness instructor, I am aware of the dangers of loud music. I do not use a mike — although there’s another personal reason for not using them — and I use a Bose speaker and my iPhone which is not nearly as loud as the sound systems provided in the rooms. I have measured the sound levels in my fitness class and they are well within the guidelines.
The Final Word
Environmental Protection Agency Standards in the United States state that:
- At 85 db, do not exceed 45 minutes of exposure.
- At 88 db, do not exceed 23 minutes of exposure.
- At 91 DB, do not exceed 11 minutes of exposure.
- The European Union has set the maximum legal limit for recreational sound at 85 dB.
- At 180 dB, permanent hearing loss can occur.
- At 120 db the bones of the middle ear vibrate and create an echo chamber inside the ear, increasing the vibration 15 times.
- Hearing loss which occurs due to prolonged exposure to loud sounds cannot be corrected; it is permanent.
- Canada’s regulations say: “In the interest of health and safety, it is suggested that employers should carry out hazard investigations where there are identifiable sources of noise which produce sound levels of at least 80 to 90 dBA on a regular basis, and to which employees might be exposed.”
Music can be a great joy and useful in fitness class to soothe or motivate, but if it is too loud, all its benefits can be lost.
- After a Fall
- Fitness Principles
- Singing Enhances Life Quality
- Exercise and Lifestyle and Older Adults: Recent Research
- Scents and Fitness: They Don't Mix
- Music and Exercise Class: Inspirational or Soothing
Resources for this article:
- From George Mason University: Physics and Astronomy page titled "Is your Aerobics Class Making you Deaf?"
- American Speech-Language-Hearing Association Information on preventing hearing loss and tinnitus
- Noise Pollution Clearing House Lists the standards set by the EPA
- National Institute on Deafness and other Communication Disorders — there are links for parents and musicians
- Hearing Education and Awareness for Rockers H.E.A.R. A non-profit hearing information source for musicians and music lovers
- Deafness Research Foundation — A non-profit foundation sponsoring education and research in hearing science.
- American Council on Exercise — A non-profit fitness certification and education provider
- Canada’s Occupational Health and Safety Regulations Canada’s guidelines for sound levels in the work place
- Test Equipment Depot
I am a BCRPA-certified fitness instructor in Vancouver, BC. I teach four classes at the West End Community Centre in Vancouver, BC, mostly designed for the older adult. The Inevitable Disclaimer: Everything published here expresses only my opinion, based on my training and research. What you do with the information is entirely your own responsibility. I am not liable for any injury you suffer that seems to be related to anything you read here. Always consult your doctor before beginning an exercise program. For other articles, return to the table of contents.
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