Marcel Młyńczak

  Ph.D. · D.Sc. · Biomedical Engineer · Data Scientist · Entrepreneur



About

Fields of interest and skills
  • 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
  • Advanced knowledge of R, MATLAB, Python and Latex programming
  • Coursera, Data Science Specialization (December 2014 - August 2015, with distinction)
  • Soft Skills and cooperation with the economy (University of Alberta, Edmonton, Canada, 2015)

Scientific bibliometry (last update on 25th January, 2024)
  • h-index: 15 (Google Scholar)
  • Sum of the Times Cited: 627 (Google Scholar)
  • Sum of JCR papers impact factors: 114.9

Current engagements



COO, CTO, Board Member, Co-founder

From December 2017




Assistant Professor (Research and Teaching)

From April 2018

Education

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

Journal papers and chapters

  • 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



Research software and data


I would be grateful for referring the papers once the data and the software are used for the non-commercial, research purposes. Informing about the use is not obligatory, but may be treated as a good practice.

Other information

Awards
Patents
Memberships