Clients seek out personal trainers for a variety of reasons, from a quest for healthier bodies to building stronger, fuller muscles. Sometimes clients turn to fitness to manage stress, sleeplessness, or chronic pain. In this article, we introduce the relatively new concept of vibroacoustic technology, studies on which have demonstrated positive results in these areas, even when exercise, stretch classes, massage, and foam rollers have fallen short of expectations. Read on to learn how personal trainers can advise their clients on this next-level option to broaden their relaxation therapy while helping them cope with chronic pain and/or insomnia.
The Introduction of Low Frequency Sound Stimulation
Thalamocortical dysrhythmia (TCD), a model proposed to explain divergent neurological disorders, refers to a neurological framework in which disrupted sensory input forces neurons in the thalamus to enter abnormally slow, low-frequency rhythms. This “traps” brain circuits in a persistent loop. Many scientists have theorized that the resulting slower-paced brain activity might serve as the underlying cause of a wide variety of neurological conditions, including Parkinson’s disease, depression, and fibromyalgia.
Every so often, researchers run across a brilliant discovery that helps millions of patients who suffer from a variety of neurogenic/neuropsychiatric/general neuralgia symptoms, while still struggling to fully explain the mechanisms behind its success. As an ideal example of this scenario, scientists have found that using low-frequency sound stimulation (LFSS) can serve in a regulatory capacity when treating the aforementioned conditions by fostering and capitalizing on neural rhythmic oscillatory activity. While the public awaits further research trials, the evidence to date holds great promise.
Vibrotactile/Vibroacoustic Technology
After giving up on massage guns, Pilates poses, and compression therapies, athletes have recently turned to a new way to revive their bodies. Vibrotactile/vibroacoustic technology involves delivering low-frequency sound, typically in the range of ~30–120 Hz, to the body to stimulate mechanoreceptors and support relaxation. Research efforts have focused on its potential effects on the nervous system and the bodily perception of pain/discomfort.
Unlike a massage gun, which delivers percussion to a single area of the body at a time, this therapy enables low-frequency waves to essentially “wash over” the entire body simultaneously. This 20-minute treatment works best immediately after intense workouts, but some supporters also add it to their rest-day protocols.
Mixing in Music with Sound Vibrations
The combination of low-frequency sound vibration and therapeutic music has demonstrated the capacity to deliver two specific treatment modalities:
- Deep cellular stimulation: While the human ear cannot technically “hear” low-frequency waves, the acoustic vibrations still penetrate deep bodily tissues. We can think of this as sound waves “massaging” cells from the inside out.
- During periods of intense stress, the brainwaves emitted from the human pulsing brain intensify in terms of speed. In contrast, when the body resides in a more relaxed state, the brain pulses less. Vibroacoustic therapy attempts to synchronize our brainwaves to more closely align with a state of deeper relaxation.
Soundbed Therapy
Imagine lying down on a specialized bed, your every sense heightened and surrounded by soothing sounds. The brain interprets these sounds as having literally reached out and massaged the entire body. Such cutting-edge therapy melts away tension by combining sound and vibration. This innovative approach enables one to “hear” music not only with the ears but as a whole somatic experience. The technologically advanced bed, equipped with transducers, delivers calming sound waves to the body, aiming to shift the brain from “fight-or-flight” responsiveness into a place of deeper relaxation. Many users report profound stress relief and a sense of mental and physical renewal.
Soundbeds typically employ the same low frequencies as mentioned above, approximating 30–120 Hz. These low tones penetrate through the skin and muscles via mechanoreceptors – the same cells that resonate with the thump of a bass speaker. By sending targeted vibrations, the soundbed delivers an “internal massage” at the cellular level. Lying on these beds, users report a sensation akin to a soothing wave rolling from the feet to the top of the head, in time with the accompanying music. This combination of sound and vibrational wave therapy engages multiple senses at once, quieting mental chatter and loosening tight muscles. Within minutes, users experience a slowing of their breathing; muscle tension eases as they drift into a meditative state or light sleep, while stress and anxiety fade.
While soundbed therapy shares roots with other holistic modalities such as music therapy and traditional sound baths, it stands apart in both its delivery and effects. Unlike music therapy, which often involves such active participation as playing instruments, singing, or discussing emotions with a trained therapist, soundbed therapy stands alone as a passive, immersive experience. Traditional sound baths envelop participants in ambient sounds ranging from gentle gongs to singing bowls, but the vibrations remain external.
Vibroacoustic Stimulation Can Promote Better Sleep
In 2024, research studies revealed a direct association between vibroacoustic stimulation and positive changes in individuals’ sleep architecture and functional connectivity patterns. In that same year, scientists investigated an autonomic modulation method employing closed-loop vibration stimulation (CLVS) as a new approach for enhancing sleep quality. The study aimed to explore the effects of CLVS on sleep quality, autonomic regulation, and brain activity in individuals who reported long-term suffering from poor sleep quality.
Twenty-seven subjects participated in this study, which included 2 experimental sessions. During these sessions, they completed a questionnaire on sleep habits and underwent polysomnography. This test, used to diagnose sleep disorders, records one’s brain waves, blood oxygen levels, and heart and breathing rates during sleep. It also measures eye and leg movements. One of the sessions made use of CLVS; the other did not.
Sleep analysis initially showed that CLVS significantly reduced the total time, proportion, and average duration of waking after the subjects fell fully asleep. These beneficial effects directly paralleled the participants’ increased self-reported sleep quality. Moreover, self-reported feelings of coherence greatly increased following a better night’s sleep.
Researchers seemed encouraged by the results and confident that this study unequivocally demonstrated how CLVS may significantly improve sleep quality in individuals with previously poor sleep patterns. These findings further suggest that CLVS may serve as a practical, noninvasive tool for enhancing sleep quality in individuals with sleep disturbances, offering an effective alternative to commonly prescribed pharmaceutical treatments.
Studies of patients with insomnia also yielded promising findings. Subjects who underwent vibroacoustic stimulation reported major improvements in sleep minutes as well as improved scores on a rating scale known as the Insomnia Severity Index questionnaire. Another noteworthy result highlighted positive changes in functional connectivity associated with the subjects’ cerebellar hemispheres, thalamus, sensorimotor areas of the brain, and prefrontal cortex.
Sound Stimulation and its Effects on Mitigating Pain
In past articles, we have explored techniques to help clients offset the after-effects of tough workouts, most notably delayed-onset muscle soreness, or DOMS. Many clients also suffer from other syndromes that cause ongoing discomfort in the limbs, connective tissue, or musculature, making exercise a true challenge. Here we discuss a few of the more common ailments associated with chronic pain and how vibroacoustic stimulation provides relief: Fibromyalgia, Postherpetic neuralgia (PHN), and Ehlers-Danlos Syndrome.
Ehlers–Danlos syndrome (EDS), a connective tissue disorder characterized by joint hypermobility and skin extensibility, often causes chronic pain. Rhythmic sensory stimulation (RSS), defined as periodic stimulation of the senses within a low-frequency range, has demonstrated potential to mitigate chronic pain. The combination of music and sound delivered through a vibroacoustic device was studied as a potential intervention in 15 patients with hypermobile EDS. 11 of the 15 patients (73%) showed post-treatment improvements. Of the 14 patients who completed the experiment, 6 participants (43%) responded well to the device, demonstrating significant improvements in pain interference, sleep patterns, irritable bowel-related issues, and depression symptoms. Furthermore, analysis of comorbid medical conditions within the responder group seems to favor vibroacoustic applications as potentially helping mitigate the discomfort associated with fibromyalgia. Research conducted at the University of Toronto likewise found vibroacoustic therapy effective in treating symptoms of fibromyalgia. Further research will hopefully elucidate the exact mechanism behind these physiological benefits.
Postherpetic neuralgia (PHN), a common and severe chronic complication of herpes zoster (the virus responsible for shingles), involves prolonged pain that may last from a few weeks to several years. Primary treatments typically include oral medications, although only a very small proportion of patients experience a pain reduction greater than 50%. Due to limited effective treatments, patients often experience recurring symptoms and comorbidities, including physical disability and emotional distress, which very often interfere with daily activities and sleep.
In a research study, subjects found Low Frequency Sound Stimulation (LFSS) to be quite effective in reducing pain while also improving mood and sleep quality. LFSS, considered a component of musical therapy within complementary and alternative medicine, uses audible sound (40–120 Hz) to produce a physical effect via a transducer. When applied directly to the body, this transducer can activate an anti-pain effect in the brain, as evidenced by improvements in both the user’s mood and sleep structure.
Vibrational Analysis on Stress
Global stress has taken on widespread notoriety in today’s post-pandemic world, no surprise, considering this country’s share of political and economic uncertainty. Vibroacoustic technology seems to have a discernible impact on stress, but the reasoning behind its success continues to mystify scientists.
One research study assessed whether Vibroacoustic Sound Massage (VSM) technology could reduce psychological, physiological, and cognitive stress. The Perceived Stress Scale, electrocardiogram (ECG), and electroencephalogram (EEG) signals were used to quantify the results. Participants were split evenly between the Low-Stress and High-Stress groups. The ECG results revealed that VSM increased parasympathetic activity in all participants, with the Low-Stress group perceiving a greater effect than the High-Stress group. The EEG results indicated increased concentration, reduced arousal, and increased relaxation, although the subjects did not report overt feelings of increased well-being. Still, when taken together, these results sufficiently validated VSM as an effective support tool for stress management.
Professional Treatment May Lead to Self-Care Interventions
Spurred on by the successes of the aforementioned VSM study, another group of scientists pondered whether the benefits observed were specific to the professional delivering the therapeutic sessions, or whether individuals could achieve the same success using VSM on their own. Participants received biweekly practitioner-led vibroacoustic treatment sessions for 5 weeks, followed by a 1-month period without treatment. Then, participants conducted four self-care vibroacoustic sessions per week for five weeks, followed by another month-long rest period. Participants kept diaries of their experiences during this time.
Previously, participants had reported that chronic pain and comorbid mood disorders had negatively impacted their daily functioning and ability to work. As we might expect, participants derived the greatest improvements from the practitioner-led sessions, but self-care did offer some benefits for pain relief and relaxation. Participants reported heightened awareness of sensations in their bodies, along with grounding effects on their autonomic nervous system (the bodily system that regulates heart rate and blood pressure and contributes to feelings of stress and anxiety). Likewise, during rest periods without treatment, subjects reported being able to notice the healing effects more clearly when symptoms returned. Vibroacoustic treatment with a self-care phase could indeed prove beneficial for managing the symptoms of chronic pain, if implemented within a naturalistic multidisciplinary rehabilitation context.
We are professionals in the fitness field, knowledgeable and prepared to provide training protocols and workouts to help our clients reach their wellness goals. When our traditional tools of the trade fail to deliver acceptable results, we can share ideas like those in this article. While the technology herein may fall outside our scope of practice, clients will always appreciate information from a professional in whom they currently place their trust.
References
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mayoclinic.org/tests-procedures/polysomnography/about/pac-20394877
