The EMST150 is the most clinically validated expiratory muscle strength trainer available today. Backed by nearly two decades of research and developed by leading respiratory and neurological experts, this compact, handheld device is scientifically proven to strengthen the muscles involved in breathing, coughing, swallowing, and speaking. Used by healthy individuals and those with neurological or neurogenic conditions, including Parkinson‚ disease, stroke, MS, ALS, spinal cord injury, and head and neck cancer. The EMST150 also shows promising results for sleep apnea (OSA), snoring, and other disorders such as Pompe disease and Huntington‚ chorea.