EMST150 Clinical

EMST (Expiratory Muscle Strength Training) and specifically the EMST150 have been the subject of more than 70 clinical studies for a diverse set of participants, needs, and objectives.


Review the Clinical Studies

Respiratory Solutions

Proven By Science

Twenty Years of Validation

From its origins in 1998, when the EMST150 was tested by high school band members playing wind instruments, we have been research-focused in terms of providing validation of its benefits. That first study and dozens of subsequent studies covering diverse patient groups and respiratory-focused objectives are available on this website. As you will discover in reading these studies, the effectiveness of the EMST150 has been repeatedly and demonstrably proven in addressing diverse respiratory needs.

Effective for the Healthy and People with Health Conditions

The studies that have been conducted on the EMST150 have been remarkably diverse in terms of participants and circumstances. Studies proving the device’s effectiveness have included vocalists, athletes, musicians, and healthy seniors to enhance and maintain respiratory strength. Alternatively, studies have proven the EMST150 effectively addresses the needs of people with a wide range of health conditions including, ALS, COPD, Head and Neck Cancer, MS, Parkinson’s, and stroke recovery. It has also been proven effective in assisting those with Obstructive Sleep Apnea wean themselves from a CPAP machine.

A Never-Ending Commitment to Continuing Research & Validation

Aspire Respiratory Products is committed to future research and validation of the EMST150 and its other products. Only through continuing to study the effects and benefits of our products can we share these empirical results with healthcare professionals and individual consumers.

Note: The EMST150 is a pressure threshold trainer. Other types of devices, such as incentive spirometers and resistance trainers, are offered as an equal substitute in the marketplace. Do not accept such devices as a substitute for a pressure threshold trainer as they are not the same, and they are not supported by extensive empirical evidence.

Our Product

The EMST150


The EMST150 is the Most Clinically Validated Expiratory Muscle Strength Training Device Available.  Whether you have Health Challenges or Specific Health Issues to address, or if you are an Athlete, Musician or Senior focused on Staying Active, the EMST150 can provide you with easy and simple exercises to strengthen your expiratory muscles, helping you address your need or achieve your objectives.

Note: The EMST150 is a calibrated pressure threshold trainer.  There are other types of devices such as incentive spirometers and breathing resistance trainers that are offered in the marketplace as an equal substitute.  Do not accept such devices as a substitute for a calibrated pressure threshold trainer as they are not the same.

EMST150 History

The EMST150 training system was originally tested on high school band students, both boys, and girls, nearly 20 years ago. The objective was to see if young people playing musical instruments that required strong expiratory power could increase their exhaled air pressure by power training with the EMST150. All the students that received training with the EMST150 experienced increased exhaled strength.

From this simple beginning, the EMST150 research team went on to apply the training to a diverse range of people and found the EMST150 trainer increased exhaled air pressure, or strength, in all who participated in the training. The EMST150 team recognized that various basic breathing-related functions such as coughing, swallowing, and speech were also improved by increasing expiratory power. Some of the most rewarding results came from working with individuals suffering from chronic neurological conditions and those seeking to stay healthy as they age. Today, the EMST150 and the IA150 adapter for inspiratory strengthening are used to strengthen the most important muscles in the human body – those involved in breathing and airway protection.

Our experience, working hand in hand with doctors and clinicians around the globe, verifies EMST150’s nearly immediate and straightforward results and its ability to maintain its positive benefits with continued use. Simply put, the EMST150 is the only device of its kind that has been rigorously tested, is accurately calibrated, with countless reports of verifiable patient outcomes.