Fourth Frontier solutions have been deployed across clinical trials, academic research, and real-world monitoring studies. These deployments support a wide range of applications, including drug evaluation, chronic disease monitoring, sports cardiology, and AI-driven physiological analysis.
Compliance and Certifications
Fourth Frontier maintains adherence to global regulatory and quality standards to support clinical and research deployments.
Ongoing Research Collaborations
Fourth Frontier solutions are actively used across academic, clinical, and applied research environments.
Exercise-based ECG validation in sports cardiology
Jessa Hospital (Hartcentrum Hasselt), Belgium
Comparative validation of ECG monitoring approaches during exercise conditions, beginning with a pilot cohort and expanding into larger-scale validation.
How our devices are being used
ECG and heart rate data are recorded during structured exercise protocols to evaluate signal quality and performance under motion conditions.
AI-driven ECG risk prediction models
University of Rochester, United States
Integration of wearable ECG data with neural network models for arrhythmia classification and cardiovascular risk prediction.
How our devices are being used
ECG data is used as input for machine learning models to improve classification accuracy and predictive performance.
Ventricular arrhythmia monitoring in high-risk occupations
University of Rochester, United States
Analysis of ventricular arrhythmias in firefighters operating in high-stress environments.
How our devices are being used
Continuous ECG and heart rate data are captured during training and operational scenarios to evaluate arrhythmic risk.
NHS-integrated physiological monitoring pathways
University of Strathclyde, United Kingdom
Multi-phase research integrating physiological monitoring into NHS-linked clinical pathways.
How our devices are being used
Data supports development of alert frameworks and longitudinal monitoring strategies within healthcare systems.
Real-world COPD monitoring studies
University of Strathclyde, United Kingdom
Monitoring physiological variability and disease progression in COPD patients outside controlled environments.
How our devices are being used
Ambulatory ECG and heart rate data are collected in free-living conditions to assess real-world disease burden.
Heat stress and physiological response monitoring
University of Central Florida, United States
Evaluation of cardiovascular and thermal responses during exercise-induced heat stress.
How our devices are being used
Heart rate and ECG data are recorded alongside temperature metrics during controlled stress conditions.
Athlete cardiac screening and rehabilitation research
University of Padova, Italy
Research focused on cardiac screening and rehabilitation in athletic populations.
How our devices are being used
Physiological monitoring supports assessment of cardiac adaptation and rehabilitation progress.
Arrhythmia monitoring in athletic populations
Amsterdam UMC, Netherlands
Monitoring intermittent arrhythmia trends in athletes and clinical populations.
How our devices are being used
ECG data is used to evaluate rhythm patterns during training and recovery.
Functional capacity assessment using ECG monitoring
University of Rochester, United States
Evaluation of cardiac effort during functional exercise testing such as the 6-minute walk test.
How our devices are being used
ECG and heart rate data are correlated with exercise performance metrics.
Endurance athlete cardiac monitoring
Washington State University, United States
Monitoring cardiac responses during endurance training in triathletes.
How our devices are being used
Data is captured during long-duration training to assess cardiac stress and adaptation.
Cardiovascular adaptation in endurance athletes
University of Leicester, United Kingdom
Study of cardiovascular adaptation and risk in endurance athletes.
How our devices are being used
ECG and heart rate monitoring supports longitudinal assessment of adaptation.
High-stress occupational monitoring
HLZDG, Belgium
Monitoring cardiac and stress responses in firefighters during training and operations.
How our devices are being used
Physiological data is used to evaluate stress and recovery patterns.
Feasibility and usability of chest-strap ECG monitoring in active individuals
Mayo Clinic, United States
A prospective study evaluating the feasibility, usability, and signal interpretability of a chest-strap ambulatory ECG system in active individuals, compared with a traditional ambulatory ECG patch monitor during daily activities and exercise.
How our devices are being used
Simultaneous ECG recordings are obtained using a medical-grade, prescription-based, FDA 510(k) cleared long-term ECG monitor (Frontier X Plus) alongside a standard ambulatory ECG patch monitor. The data is used for comparison of arrhythmic events, ECG signal quality, and physician confidence in interpretation, while also assessing patient comfort and usability during real-world activity.
Ongoing Clinical Trials
Active clinical trials utilizing Fourth Frontier technology for patient monitoring and research outcomes.
Cardiac effort and biomarker evaluation in PAH therapy
Liquidia Technologies, Inc., United States
A prospective, multi-center study evaluating physiological responses, including cardiac effort and strain, in patients undergoing investigational therapy for pulmonary arterial hypertension.
Therapeutic area
Pulmonary arterial hypertension
Study design
Prospective, multi-center study
How our devices are being used
Wellness-grade systems are used to record ECG and heart rate during both real-world and supervised conditions, including 6-minute walk tests. Data contributes to longitudinal physiological assessment and supports biomarker analysis for regulatory submissions, including a New Drug Application to the U.S. Food and Drug Administration.
A prospective observational study evaluating physiological monitoring in patients with chronic obstructive pulmonary disease in real-world environments.
Therapeutic area
COPD
Study design
Prospective observational study
How our devices are being used
ECG and heart rate data are recorded in ambulatory conditions to support longitudinal monitoring and research into disease progression outside the clinic.
Peer-reviewed research and validated clinical outcomes demonstrating the efficacy of Fourth Frontier technology.
FDA-510K-CLEARANCE
ECG performance evaluation supporting FDA clearance submission
This study evaluated the performance of the medical-grade, prescription-based, FDA 510K cleared long-term ECG monitor (Frontier X Plus) in a cohort of 832 individuals, including those with and without atrial fibrillation, across both clinical and real-world settings.
How our devices are being used
ECG data recorded using Frontier X Plus was compared against a reference standard ECG system, with adjudication by three independent cardiologists. The study demonstrated high agreement in atrial fibrillation classification, with a sensitivity of 98.10% and specificity of 97.88%, supporting its use in capturing high-quality ECG data for physician-led interpretation and clinical assessment.
Results summary
Sensitivity
98.10%
Specificity
97.88%
Scientific presentation
832 individuals
URMC-AF-VALIDATION-2026
ECG validation against holter monitoring for atrial fibrillation
University of Rochester Medical Center, United States
A prospective validation study demonstrating high agreement with gold-standard Holter monitoring for atrial fibrillation classification and ECG interval analysis.
Therapeutic area
Atrial fibrillation
Study design
Prospective validation study with blinded adjudication
How our devices are being used
Simultaneous ECG recordings were obtained using a medical-grade, prescription-based, FDA 510K cleared long-term ECG monitor and standard Holter monitoring. Data was evaluated against cardiologist-adjudicated Holter ECG for rhythm classification and interval agreement.
Cardiac effort and functional capacity in pulmonary hypertension
Dr Ciara McCormack, Dublin City University, Ireland
Study evaluating the relationship between cardiac effort, functional capacity, and quality of life using wearable-derived physiological data.
Therapeutic area
Pulmonary hypertension
Study design
Prospective observational study
How our devices are being used
ECG and heart rate data were recorded during 6-minute walk tests to evaluate cardiac effort relative to physical performance and patient-reported outcomes.
Comparative Performance of Wearable ECG Devices During Exercise in Endurance Athletes
Jessa Hospital in collaboration with KU Leuven and international research partners, Belgium
A prospective observational cohort study embedded within a crossover trial evaluating the performance of multiple wearable ECG systems during both high-intensity exercise and extended ambulatory monitoring in endurance athletes. The study compared signal quality, recording duration, and user experience across different device types.
Prospective observational cohort study with crossover device comparison
How our devices are being used
Utilized as a single-lead chest-strap ECG system during both a supervised 3-hour high-intensity cycling session and extended ambulatory monitoring. The Frontier X2 demonstrated the highest proportion of interpretable ECG recordings during exercise, outperforming patch-based systems under high-motion conditions. It also captured a greater proportion of recordings during exercise sessions, supporting its use in evaluating exercise-associated cardiac rhythm patterns.
