ArticleJournal of human kinetics2013
Validity of the ithlete™ Smart Phone Application for Determining Ultra-Short-Term Heart Rate Variability.
Article in Journal of human kinetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.
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Who cites it
41 citing papers in PubMed, 1 synthesis or guideline pooled it, 113 citations in OpenAlex.
- The Accuracy of Acquiring Heart Rate Variability from Portable Devices: A Systematic Review and Meta-Analysis.Sports medicine (Auckland, N.Z.) · 2019Pooled it
- Heart Rate Variability-Guided Training for Improving Mortality Predictors in Patients with Coronary Artery Disease.International journal of environmental research and public health · 2022Trial
- Biostrap Kairos Wristband Versus Electrocardiography for Resting Heart Rate Variability Assessment.Sensors (Basel, Switzerland) · 2025Article
- Test-Retest Reliability and Concurrent Validity of Photoplethysmography Finger Sensor to Collect Measures of Heart Rate Variability.Sports (Basel, Switzerland) · 2025Article
- Mapping HRV in sports science: from monitoring to machine learning.Frontiers in sports and active living · 2025Review
- Validity of Ultra-Short-Term Heart Rate Variability Derived from Femoral Arterial Pulse Waveform in a British Military Cohort.Applied psychophysiology and biofeedback · 2024Article
- Heart Rate Variability in Individuals with Down Syndrome: A Scoping Review with Methodological Considerations.International journal of environmental research and public health · 2023Article
- Article
- Validity of a Smartphone Application in Calculating Measures of Heart Rate Variability.Sensors (Basel, Switzerland) · 2022Article
- Acute Effects of a Single-Session of Full-Body Foam Rolling on Heart Rate Variability.International journal of therapeutic massage & bodywork · 2022Article
- Different acquisition systems for heart rate variability analysis may lead to diverse outcomes.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2022Article
- Wrist-Based Photoplethysmography Assessment of Heart Rate and Heart Rate Variability: Validation of WHOOP.Sensors (Basel, Switzerland) · 2021Article
- Eligibility Classification as a Factor in Understanding Student-Athlete Responses to Collegiate Volleyball Competition.Sports (Basel, Switzerland) · 2021Article
- Evaluating the Clinical Utility of Daily Heart Rate Variability Assessment for Classifying Meaningful Change in Testosterone-to-Cortisol Ratio: A Preliminary Study.International journal of exercise science · 2021Article
- Is Ultra-Short-Term Heart Rate Variability Valid in Non-static Conditions?Frontiers in physiology · 2021Article
- Inter- and Intra-Day Comparisons of Smartphone-Derived Heart Rate Variability across Resistance Training Overload and Taper Microcycles.International journal of environmental research and public health · 2020Article
- A Pilot Study of the Reliability and Agreement of Heart Rate, Respiratory Rate and Short-Term Heart Rate Variability in Elite Modern Pentathlon Athletes.Diagnostics (Basel, Switzerland) · 2020Article
- Validity of Smartphone Heart Rate Variability Pre- and Post-Resistance Exercise.Sensors (Basel, Switzerland) · 2020Article
- Tai Chi training for attention deficit hyperactivity disorder: A feasibility trial in college students.Complementary therapies in medicine · 2020Article
- A Novel Smartphone App for the Measurement of Ultra-Short-Term and Short-Term Heart Rate Variability: Validity and Reliability Study.JMIR mHealth and uHealth · 2020Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of this investigation was to cross-validate the ithlete™ heart rate variability smart phone application with an electrocardiograph for determining ultra-short-term root mean square of successive R-R intervals. The root mean square of successive R-R intervals was simultaneously determined via electrocardiograph and ithlete™ at rest in twenty five healthy participants. There were no significant differences between the electrocardiograph and ithlete™ derived root mean square of successive R-R interval values (p > 0.05) and the correlation was near perfect (r = 0.99, p < 0.001). In addition, the ithlete™ revealed a Standard Error of the Estimate of 1.47 and Bland Altman plot showed that the limits of agreement ranged from 2.57 below to 2.63 above the constant error of -0.03. In conclusion, the ithlete™ appeared to provide a suitably accurate measure of root mean square of successive R-R intervals when compared to the electrocardiograph measures obtained in the laboratory within the current sample of healthy adult participants. The current study lays groundwork for future research determining the efficacy of ithlete™ for reflecting athletic training status over a chronic conditioning period.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.