Marcel Młyńczak
Ph.D. · D.Sc. · Biomedical Engineer · Data Scientist · Entrepreneur
About
- Biomedical Engineering
- Data science & Machine learning
- Medical Technology
- Physiological measurements
- Cardiorespiratory activity
- Impedance pneumography
- Impedance spectroscopy
- Sports medicine
- Sleep medicine
- Clinical investigations
- Biostatistics
- Signal and image processing
- Causality
- R, MATLAB and Python programming
Scientific bibliometry (last update on 4th April, 2025)
- h-index: 17 (Google Scholar)
- Sum of the Times Cited: 937 (Google Scholar)
- Sum of JCR papers impact factors: 128.1
Current engagements
COO, CTO, Board Member, Co-founder
From December 2017
Associate Professor
From June 2024
Assistant Professor (earlier)
From April 2018
Education and courses
Habilitation (D.Sc.)
Warsaw University of Technology, Faculty of Mechatronics
Impedance pneumography and causal analysis for the development of cardiorespiratory assessment in healthy people
October 2022
Doctoral studies
Warsaw University of Technology, Faculty of Mechatronics
Electroimpedance method for quantitative assessment of respiratory system activity
October 2014 - January 2018
with honors
Ph.D. defense slides
Master studies
Warsaw University of Technology, Faculty of Mechatronics
Pneumotachometric verification of respiratory parameters derived from impedance pneumography
February 2013 - June 2014
with honors
Bachelor studies
Warsaw University of Technology, Faculty of Mechatronics
Development and execution of a rheograph allowing detection of the breathing phase
October 2009 - January 2013
with honors
Healthcare Leadership Programme
University of Oxford, Saïd Business School
October 2024
Entrepreneurship and soft skills workshops
University of Alberta, Edmonton, Canada
November 2015
Data Science Specialization
Coursera
August 2015
Journal papers and chapters
- K. Borycka, M. Młyńczak, M. Rosoł, K. Korzeniewski, P. Iwanowski, H. Heřman, P. Janku, M. Uchman-Musielak, E. Dosedla, E. Gonzalez Diaz, I. Sudoł-Szopińska, M. Mik, C. Ratto, A. Spinelli
Detection of obstetric anal sphincter injuries using machine learning-assisted impedance spectroscopy: a prospective, comparative, multicentre clinical study
Scientific Reports 2025 (Impact Factor = 3.8; Open Access; DOI: 10.1038/s41598-025-92392-z)
Publisher website, Full-text and .bib file - M. Mikielewicz, J.S. Gąsior, M. Młyńczak
CoRRection – an open source software tool for RR intervals processing
Polish Journal of Medical Physics and Engineering 2025 (Impact Factor = 0.7; Open Access; DOI: 10.2478/pjmpe-2025-0002)
Publisher website, Full-text and .bib file - M. Rosoł, J.S. Gąsior, K. Korzeniewski, J. Łaba, R. Makuch, B. Werner, M. Młyńczak
Machine Learning Classification of Pediatric Health Status Based on Cardiorespiratory Signals with Causal and Information Domain Features Applied—An Exploratory Study
Journal of Clinical Medicine 2024 (Impact Factor = 3.0; Open Access; DOI: 10.3390/jcm13237353)
Publisher website, Full-text and .bib file - J.S. Gąsior, M. Młyńczak, M. Rosoł, P. Wieniawski, R. Pietrzak, B. Werner
Validity of the Pneumonitor for Analysis of Short-Term Heart Rate Asymmetry Extended with Respiratory Data in Pediatric Cardiac Patients
Journal of Clinical Medicine 2024 (Impact Factor = 3.0; Open Access; DOI: 10.3390/jcm13164654)
Publisher website, Full-text and .bib file - J.S. Gąsior, M. Gąsienica-Józkowy, M. Młyńczak, M. Rosoł, R. Makuch, R. Baranowski, B. Werner
Heart rate dynamics and asymmetry during sympathetic activity stimulation and post-stimulation recovery in ski mountaineers — a pilot exploratory study
Frontiers in Sports and Active Living 2024 (Impact Factor = 2.7; Open Access; DOI: 10.3389/fspor.2024.1336034)
Publisher website, Full-text and .bib file - M. Rosoł, M. Petelczyc, J.S. Gąsior, M. Młyńczak
Prediction of peak oxygen consumption using cardiorespiratory parameters from warmup and submaximal stage of treadmill cardiopulmonary exercise test
PLOS One 2024 (Impact Factor = 3.7; Open Access; DOI: 10.1371/journal.pone.0291706)
Publisher website, Full-text and .bib file - J.S. Gąsior*, M. Młyńczak*, C.A. Williams, A. Popłonyk, D. Kowalska, P. Giezek, B. Werner
The discovery of a data-driven causal diagram of sport participation in children and adolescents with heart disease: a pilot study
Frontiers in Cardiovascular Medicine 2023 (Impact Factor = 3.6; Open Access; DOI: 10.3389/fcvm.2023.1247122)
Publisher website, Full-text and .bib file - M. Rosoł, J.S. Gąsior, J. Łaba, K. Korzeniewski, M. Młyńczak
Evaluation of the performance of GPT-3.5 and GPT-4 on the Polish Medical Final Examination
Scientific Reports 2023 (Impact Factor = 4.6; Open Access; DOI: 10.1038/s41598-023-46995-z)
Publisher website, Full-text and .bib file - J.Z. Tomaszewska, M. Młyńczak, A. Georgakis, C. Chousidis, M. Ładogórska, W. Kukwa
Automatic Heart Rate Detection during Sleep Using Tracheal Audio Recordings from Wireless Acoustic Sensor
MDPI Diagnostics 2023 (Impact Factor = 3.6; Open Access; DOI: 10.3390/diagnostics13182914)
Publisher website, Full-text and .bib file - J.S. Gąsior*, M. Młyńczak*, M. Rosoł, P. Wieniawski, I. Walecka, G. Cybulski, B. Werner
Validity of the Pneumonitor for RR intervals acquisition for short-term heart rate variability analysis extended with respiratory data in pediatric cardiac patients
Polish Heart Journal 2023 (Impact Factor = 3.710; Open Access; DOI: 10.33963/KP.a2023.0070)
Publisher website, Full-text and .bib file - J. Krzywański, T. Mikulski, H. Krysztofiak, A. Pokrywka, T. Sobierajski, M. Młyńczak, A. Piechuta, E. Kuchar
Response to the letter to the Editor regarding the article "Vaccine versus infection - COVID-19-related loss of training time in elite athletes"
Journal of Science and Medicine in Sport 2023 (Impact Factor = 4.597; DOI: 10.1016/j.jsams.2023.02.007)
Publisher website - J. Krzywański, T. Mikulski, H. Krysztofiak, A. Pokrywka, T. Sobierajski, M. Młyńczak, A. Piechuta, E. Kuchar
Vaccine versus infection – COVID-19-related loss of training time in elite athletes
Journal of Science and Medicine in Sport 2022 (Impact Factor = 4.597; Open Access; DOI: 10.1016/j.jsams.2022.10.004)
Publisher website - W. Kukwa, T. Lis, J. Łaba, R.B. Mitchell, M. Młyńczak
Sleep Position Detection with a Wireless Audio-Motion Sensor—A Validation Study
MDPI Diagnostics 2022 (Impact Factor = 3.706; Open Access; DOI: 10.3390/diagnostics12051195)
Publisher website, Full-text and .bib file - M. Rosoł, M. Młyńczak, G. Cybulski
Granger causality test with nonlinear neural-network-based methods: Python package and simulation study
Computer Methods and Programs in Biomedicine 2022 (Impact Factor = 5.428; Open Access; DOI: 10.1016/j.cmpb.2022.106669)
Publisher website, Full-text and .bib file - J.S. Gąsior, M. Rosoł, M. Młyńczak, A.A. Flatt, B. Hoffmann, R. Baranowski, B. Werner
Reliability of Symbolic Analysis of Heart Rate Variability and Its Changes During Sympathetic Stimulation in Elite Modern Pentathlon Athletes: A Pilot Study
Frontiers in Physiology 2022 (Impact Factor = 4.566; Open Access; DOI: 10.3389/fphys.2022.829887)
Publisher website, Full-text and .bib file - W. Kukwa, J. Łaba, T. Lis, K. Sobczyk, R.B. Mitchell, M. Młyńczak
Supine sleep patterns as a part of phenotyping patients with sleep apnea - a pilot study
Sleep and Breathing 2022 (Impact Factor = 2.816; Open Access; DOI: 10.1007/s11325-022-02567-5)
Publisher website, Full-text and .bib file - M. Młyńczak, H. Krysztofiak
Respiratory Activity during Exercise: A Feasibility Study on Transition Point Estimation Using Impedance Pneumography
MDPI Sensors 2021 (Impact Factor = 3.576; Open Access; DOI: 10.3390/s21186233)
Publisher website, Full-text and .bib file - J. Krzywański, T. Mikulski, H. Krysztofiak, A. Pokrywka, M. Młyńczak, Ł.A. Małek, D. Kwiatkowska, E. Kuchar
Elite athletes with COVID-19 — Predictors of the course of disease
Journal of Science and Medicine in Sport 2021 (Impact Factor = 4.319; Open Access; DOI: 10.1016/j.jsams.2021.07.003)
Publisher website, Full-text and .bib file - M. Młyńczak
Physiological Measurements of Cardio-Respiratory Activity with Impedance Pneumography
Chapter (10) in the book "Bioimpedance and Spectroscopy" (1st Edition, 2021) Edited by Dr. Paul Annus and Prof. Mart Min (Elsevier, ISBN: 9780128186145, eISBN: 9780128197004)
Publisher website - R.G. Kashani, M. Młyńczak, D. Zarabanda, P. Solis-Pazmino, D.M. Huland, I.N. Ahmad, S.P. Singh, T.A. Valdez
Shortwave infrared otoscopy for diagnosis of middle ear effusions: a machine-learning-based approach
Scientific Reports 2021 (Impact Factor = 4.1; Open Access; DOI: 10.1038/s41598-021-91736-9)
Publisher website, Full-text and .bib file - M. Młyńczak, T.A. Valdez, W. Kukwa
Comparing sleep studies in terms of the apnea-hypopnea index using the dedicated Shiny web application
Biomedical Signal Processing and Control 2021 (Impact Factor = 3.137; DOI: 10.1016/j.bspc.2021.1026147)
Publisher website, .bib file and a ArXiV pre-print - M. Młyńczak, M. Rosoł, A. Spinelli, A. Dziki, E. Wlaźlak, G. Surkont, M. Krzycka, P. Pająk, Ł. Dziki, M. Mik, K. Borycka-Kiciak
Obstetric Anal Sphincter Injury Detection Using Impedance Spectroscopy with the ONIRY Probe
MDPI Applied Sciences 2021 (Impact Factor = 2.474; Open Access; DOI: 10.3390/app11020637)
Publisher website, Full-text and .bib file - B. Hoffmann, A.A. Flatt, L.E.V. Silva, M. Młyńczak, R. Baranowski, E. Dziedzic, B. Werner, J.S. Gąsior
A Pilot Study of the Reliability and Agreement of Heart Rate, Respiratory Rate and Short-Term Heart Rate Variability in Elite Modern Pentathlon Athletes
MDPI Diagnostics 2020 (Impact Factor = 3.110; Open Access; DOI: 10.3390/diagnostics10100833)
Publisher website, Full-text and .bib file - M. Młyńczak, T.A. Valdez, W. Kukwa
Joint Apnea and Body Position Analysis for Home Sleep Studies Using a Wireless Audio and Motion Sensor
IEEE Access 2020 (Impact Factor = 3.745; Open Access; DOI: 10.1109/ACCESS.2020.3024122)
Publisher website, Full-text and .bib file - H. Krysztofiak, M. Młyńczak, Ł. A. Małek, A. Folga, W. Braksator
Left ventricular mass normalization in child and adolescent athletes must account for sex differences
PLOS One 2020 (Impact Factor = 2.740; Open Access; DOI: 10.1371/journal.pone.0236632)
Publisher website, Full-text and .bib file - J. Krzywański, A. Pokrywka, M. Młyńczak, T. Mikulski
Is vitamin D status reflected by testosterone concentration in elite athletes?
Biology of Sport (Impact Factor = 2.202; Open Access; DOI: 10.5114/biolsport.2020.95633)
Publisher website, Full-text and .bib file - J. Krzywański, T. Mikulski, A. Pokrywka, M. Młyńczak, H. Krysztofiak, B. Frączek, A. Ziemba
Vitamin B12 Status and Optimal Range for Hemoglobin Formation in Elite Athletes
MDPI Nutrients (Impact Factor = 4.546; Open Access; DOI: 10.3390/nu12041038)
Publisher website, Full-text and .bib file - J. Krzywański, E. Kuchar, A. Pokrywka, T. Mikulski, I. Pilchowska, M. Młyńczak, H. Krysztofiak, J. Jurczyk, A. Ziemba, A. Nitsch-Osuch
Safety and Impact on Training of the Influenza Vaccines in Elite Athletes Participating in the Rio 2016 Olympics
Clinical Journal of Sport Medicine 2020 (Impact Factor = 2.224; DOI: 10.1097/JSM.0000000000000808)
Publisher website and .bib file - H. Krysztofiak, M. Młyńczak, Ł. A. Małek, A. Folga, W. Braksator
Left ventricular mass normalization for body size in children based on an allometrically adjusted ratio is as accurate as normalization based on the centile curves method
PLOS One 2019 (Impact Factor = 2.766; Open Access; DOI: 10.1371/journal.pone.0225287)
Publisher website, Full-text and .bib file - H. Krysztofiak, M. Młyńczak, Ł. A. Małek, A. Folga, W. Braksator
Left ventricular mass is underestimated in overweight children because of incorrect body size variable chosen for normalization
PLOS One 2019 (Impact Factor = 2.766; Open Access; DOI: 10.1371/journal.pone.0217637)
Publisher website, Full-text and .bib file - K. Borycka-Kiciak, M. Młyńczak, A. Kiciak, P. Pietrzak, A. Dziki
Non-invasive obstetric anal sphincter injury diagnostics using impedance spectroscopy
Scientific Reports 2019 (Impact Factor = 4.122; Open Access; DOI: 10.1038/s41598-019-43637-1)
Publisher website, Full-text and .bib file - M. Młyńczak, A. Kołodziejczyk, H. Krysztofiak, G. Ambroszkiewicz, M. Żyliński, G. Cybulski
Cardiorespiratory profiling during simulated lunar mission using impedance pneumography
Biomedical Signal Processing and Control 2019 (Impact Factor = 2.783; DOI: 10.1016/j.bspc.2019.02.015)
Publisher website and .bib file - M. Młyńczak, H. Krysztofiak
Cardiorespiratory temporal causal links and the differences by sport or lack thereof
Frontiers in Physiology 2019 (Impact Factor = 3.394; Open Access; DOI: 10.3389/fphys.2019.00045)
Publisher website, Full-text, .bib file and Supplementary Materials - M. Młyńczak, H. Krysztofiak
Discovery of causal paths in cardiorespiratory parameters: a time-independent approach in elite athletes
Frontiers in Physiology 2018 (Impact Factor = 3.394; Open Access; DOI: 10.3389/fphys.2018.01455)
Publisher website, Full-text, .bib file and Supplementary Materials - H. Krysztofiak, Ł. A. Małek, M. Młyńczak, A. Folga, W. Braksator
Comparison of echocardiographic linear dimensions for male and female child and adolescent athletes with published pediatric normative data
PLOS One 2018 (Impact Factor = 2.766; Open Access; DOI: 10.1371/journal.pone.0205459)
Publisher website, Full-text and .bib file - H. Krysztofiak, M. Młyńczak, A. Folga, W. Braksator, Ł. A. Małek
Normal Values for Left Ventricular Mass in Relation to Lean Body Mass in Child and Adolescent Athletes
Pediatric Cardiology 2018 (Impact Factor = 1.540; Open Access; DOI: 10.1007/s00246-018-1982-9)
Publisher website, Full-text and .bib file - M. Młyńczak, E. Migacz, M. Migacz, W. Kukwa
Detecting breathing and snoring episodes using a wireless tracheal sensor - a feasibility study
IEEE Journal of Biomedical and Health Informatics 2017 (Impact Factor = 3.451; DOI: 10.1109/JBHI.2016.2632976)
Publisher website, Post-print version and .bib file - J. Krzywański, T. Mikulski, H. Krysztofiak, M. Młyńczak, E. Gaczyńska, A. Ziemba
Seasonal Vitamin D Status in Polish Elite Athletes in Relation to Sun Exposure and Oral Supplementation
PLOS One 2016 (Impact Factor = 2.806; Open Access; DOI: 10.1371/journal.pone.0101659)
Publisher website, Full-text and .bib file - M. Młyńczak, W. Niewiadomski, M. Żyliński, G. Cybulski
Assessment of calibration methods on impedance pneumography accuracy
Biomedical Engineering/Biomedizinische Technik 2016 (Impact Factor = 0.915; DOI: 10.1515/bmt-2015-0125)
Publisher website, Full-text and .bib file
