When manual treatment, movement modification or exercise have not changed pain or sensitivity enough, I may use Dolphin Neurostim as another way to influence the pain system.
In my practice, selected clients have experienced meaningful and lasting changes in pain, sensitivity and movement tolerance after Microcurrent Point Stimulation, including cases where other approaches had not produced enough improvement. These are clinical observations, not a guarantee or a controlled trial. They are one reason I continue to use MPS when the presentation, screening and treatment goal make sense.
To understand why this approach is physiologically plausible, it helps to look at foundational research by neurophysiologist Dr. Bruce Pomeranz on low-frequency electrical stimulation, acupuncture analgesia and the body's own opioid pain-control system.
What kind of current does Dolphin Neurostim use?
Dolphin Neurostim delivers low-frequency, pulsed direct current through a focused probe placed against intact skin. Public device information describes a frequency range of approximately 2.4 to 3.0 hertz.
That means the current pulses only a few times per second. It is different from continuous direct current and from many conventional TENS applications that use different waveforms, frequencies and electrode arrangements.
The electrical input stimulates sensory tissue beneath the probe. What happens next can involve several levels of the nervous system. The most established explanation relevant to low-frequency stimulation is endogenous opioid modulation.
What did Pomeranz's research find?
In a 1976 animal study, Pomeranz and colleagues applied low-frequency electroacupuncture to awake mice. The stimulation increased the time it took the animals to respond to a noxious heat stimulus, which indicated an analgesic effect.
The important part came next. When the researchers administered naloxone, a medication that blocks opioid receptors, the analgesic response was abolished.
That result supported a biological explanation: low-frequency electrical stimulation was engaging the body's own opioid pain-control system rather than producing only distraction or a nonspecific sensory effect.
Follow-up animal research further implicated pituitary-related opioid activity. Other experiments recorded changes in pain-responsive spinal neurons and found that naloxone could reverse the inhibitory effect.
Together, this research helped establish that appropriately delivered low-frequency electrical stimulation can influence pain through endogenous opioids such as endorphins and related neurochemicals.
What are endorphins?
Endorphins are signalling molecules produced within the body. They bind to opioid receptors involved in pain modulation, stress responses and other physiological functions.
They do not simply switch pain off. Pain is influenced by tissue sensitivity, inflammation, nervous-system processing, previous experience, sleep, stress, health conditions and the demands placed on the body.
Endogenous opioid activity is one credible way electrical stimulation may reduce the intensity or threat of a painful input. It is part of the explanation, not necessarily the entire explanation for every response.
How does this research relate to Dolphin MPS?
Dolphin Neurostim also uses low-frequency electrical stimulation, delivered as pulsed direct current through a focused handheld probe. This creates a credible physiological rationale for pain modulation through sensory and endogenous opioid pathways.
However, the original Pomeranz experiments did not test the modern Dolphin device itself. They studied electroacupuncture in animal models. The research supports the mechanism as biologically plausible, but it does not prove that every Dolphin application creates an identical response or that every person will benefit.
That distinction matters. A treatment can have a reasonable physiological basis and produce useful clinical outcomes without every step of the mechanism having been proven for that exact device, point selection and patient population.
Does direct current have a unique proven pain mechanism?
The strongest evidence discussed here relates to low-frequency electrical stimulation and opioid-mediated analgesia. It does not establish that direct current alone is responsible for the entire clinical effect.
Waveform, frequency, intensity, stimulation location, treatment duration, tissue state and the person receiving treatment can all influence the response.
Direct current is an accurate description of the Dolphin output. It should not be turned into claims that the device mirrors healthy cellular electricity, permanently repolarizes scars or automatically resets the nervous system. Those more specific explanations require direct supporting evidence.
The practical point is simpler: Dolphin provides a focused, low-frequency electrical stimulus that may influence pain and sensitivity through known neurophysiological pathways.
How can an initial pain response become a lasting improvement?
Pain modulation does not have to be dismissed as temporary.
When a meaningful reduction in pain or sensitivity allows someone to move more comfortably, tolerate rehabilitation, sleep better, return to training or stop repeatedly guarding an area, the effect can support longer-term change.
A useful sequence may look like this:
- Treatment reduces pain or sensitivity enough to create a workable window.
- The person moves, loads or trains with greater tolerance.
- Repeated successful exposure improves confidence and physical capacity.
- The activity becomes less threatening and less likely to trigger the same response.
- The improvement may persist because the person's function and capacity have changed, not only because a device was applied.
Some clients in my practice have reported lasting improvement after MPS even when the immediate goal was symptom modulation. I measure that by what remains better over time, not only by how the person feels on the treatment table.
What do I measure before and after treatment?
I choose a target connected to the reason for the appointment. Depending on the presentation, that may include:
- pain during a particular movement
- sensitivity around a fully healed scar
- comfort reaching or lifting
- tolerance to an exercise
- walking, sitting or training tolerance
- the distribution or intensity of symptoms
- a functional task that matters to the client
I reassess the same target after treatment and, when appropriate, at later visits. An immediate change is useful information. A change that remains and improves function is more important.
If the response is absent, too small or does not help the larger goal, the plan should change.
How I use Dolphin MPS at Lee Strength
I use Dolphin as one option within an assessment-led plan. It is not automatic, and it is not the correct starting point for every person.
During a Registered Massage Therapy appointment, MPS may be discussed as an optional adjunct when it fits the agreed massage therapy plan and the client consents.
Standalone MPS appointments are a separate non-RMT service and do not receive an RMT insurance receipt.
Depending on the problem and goal, hands-on RMT care, strength and performance coaching, medical assessment or referral to another qualified professional may be more appropriate.
What the evidence supports
The evidence supports several careful conclusions:
- Low-frequency electrical stimulation can engage endogenous opioid pain-control pathways.
- Naloxone experiments provide strong evidence that opioid receptors contributed to the analgesic response in the foundational animal research.
- Dolphin Neurostim delivers low-frequency pulsed direct current, making this research relevant to its physiological rationale.
- The exact response to Dolphin MPS varies by person, application and clinical context.
- Pomeranz's research does not prove every manufacturer claim, point system or proposed mechanism.
- Clinical improvement should be judged by meaningful and durable changes in symptoms and function.
The practical takeaway
Dolphin MPS is not simply a device that distracts someone from pain. Low-frequency electrical stimulation has a credible neurophysiological basis involving the body's own pain-modulating systems.
In my practice, I use it because selected clients have experienced meaningful improvements, including lasting changes in pain, sensitivity and movement tolerance when other approaches had not been sufficient.
The treatment still has to earn its place. I screen for suitability, choose a specific target, reassess the response and connect any improvement to movement, rehabilitation or training whenever that supports the person's goal.
The aim is not to sell a mechanism. It is to use a reasonable tool carefully and determine whether it helps you do more.