Dr. med. Mathias Steinach

Center for Space Medicine Berlin

Charité Cross Over
Charitéplatz 1 
10117 Berlin

Email Me
+49 (0)30 450 528 517


Dr. Mathias Steinach has been a research assistant of the group of Space Medicine and Extreme Environments since 2006. He has studied Human Medicine at the Charité Berlin, received his license to practice medicine and briefly worked in Sports Medicine and Rehabilitation (PD Dimeo) before eventually joining Prof. Gunga’s research group. Besides this he has also studied film and took part in numerous film- and TV-productions.

Since 2007 he has been incorporated into the long-term physiological research of overwinterers of the German Research Station Neumayer II and then it’s successor Neumayer III. He has made this research the topic of his doctoral thesis “Physiological long term changes in overwinterers in the Antarctic with particular consideration of activity parameters” where he studied the respective changes in overwinterers of the campaigns 2008 – 2011. He completed the evaluation of these long-term studies in 2012 and received his doctoral degree in February 2013.

Meanwhile he has worked on the group’s numerous research topics and contributed to many publications (see list below).

In February 2013 he engaged in a new study regarding “Physiological Changes in Participants of an Ultramarathon in Subarctic Climate” where participants of the extreme Yukon Arctic Ultramarathon (YAU) in north-west Canada travel 430 miles (690 km) by foot whilst in extremely cold conditions. These measurements were continued during the YAU-2015 and currently 2017. See the Blog on how these measurements proceeded in 2015 and 2017.

In May 2014 he conducted a pilot-study regarding physiological changes in participants in a 24-hour long 100 km march where the participants walked with a relatively low speed of 4-5 km/h but for an extensive duration to cover the distance of 100 km. This has been developed into a full study in 2015.

His main interests are exercise physiology and extreme environments (and the combination thereof), circadian rhythm, isolation and thermo-physiology.

Privately, he engages in different kinds of sports such as strength and endurance training, sports climbing and various forms of martial arts (Jiu-Jitsu, Karate and Krav Maga). He also enjoys travelling and photography.


Rundfeldt LC, Maggioni MA, Coker RH, Gunga HC, Riveros-Rivera A, Schalt A, Steinach M, “Cardiac Autonomic Modulations and Psychological Correlates in the Yukon Arctic Ultra: The Longest and the Coldest Ultramarathon” in Front. Physiol., 2018

Stahn A, Werner A, Opatz O, Maggioni MA, Steinach M, Weller von Ahlefeld V, Moore A, Crucian BE, Smith SM, Zwart SR, Schlabs T, Mendt S, Trippel T, Koralewski E, Koch J, Choukèr A, Reitz G, Shang P, Röcker L, Kirsch KA, Gunga HC, “Increased core body temperature in astronauts during long-duration space missions” in Sci Rep., 2017

Boening D, Maassen N, Steinach M, “The Efficiency of Muscular Exercise” in Deut.Z.Sportmed., 2017

Mendt S, Maggioni MA, Nordine M, Steinach M, Opatz O, Belavý D, Felsenberg D, Koch J, Shang P, Gunga HC, Stahn A, “Circadian rhythms in bed rest: Monitoring core body temperature via heat-flux approach is superior to skin surface temperature” in Chronobiol.Int., 2016

Coker RH, Weaver AN, Coker MS, Murphy CJ, Gunga HC, Steinach M, “Metabolic Responses to the Yukon Arctic Ultra: Longest and Coldest in the World” in Med.Sci.Sports.Exerc., 2016

Steinach M, Kohlberg E, Maggioni MA, Mendt S, Opatz O, Stahn A, Gunga HC, “Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III: The Gender Factor” in PloS One, 2016

Steinach M, Kohlberg E, Maggioni MA, Mendt S, Opatz O, Stahn A, Tiedemann J, Gunga HC, “Changes of 25-OH-Vitamin D during Overwintering at the German Antarctic Stations Neumayer II and III” in PloS One, 2015

Mathias Steinach, “Yukon Arctic Ultra – Betrachtungen aus physiologischer Sicht” in “Medical Sports Network”, Succidia AG-Verlag, 2015

Mathias Steinach and Hanns-Christian Gunga, Chapter 6 “Cold Environments” in “Human Physiology in Extreme Environments”, Academic Press – Elsevier, 2015

Mathias Steinach and Hanns-Christian Gunga, Chapter 3 “Exercise Physiology” in “Human Physiology in Extreme Environments”, Academic Press – Elsevier, 2015

Opatz O, Trippel T, Lochner A, Werner A, Stahn A, Steinach M, Lenk J, Kuppe H, Gunga HC, “Temporal and spatial dispersion of human body temperature during deep hypothermia” in Br.J.Anaesth., 2013

Mathias Steinach, “Circadianer Rhythmus – ein Review” in “Jahrbuch 2012”, Österreichische Gesellschaft für Alpin- und Höhenmedizin, 2012

Mathias Steinach, Chapter 4.1 “Zirkadiane Rhythmik” in “Lichttherapie”, Springer-Verlag, 2012

Mathias Steinach and Hanns-Christian Gunga, Chapter 7 “Circadian Rhythm and Stress” in “Stress Challenges and Immunity in Space”, Springer-Verlag, 2012

Hanns-Christian Gunga, Mathias Steinach, Karl Kirsch, Alexander Stahn and Andreas Werner, Chapter 7.6 “Weltraummedizin und -biologie” in “Handbuch der Raumfahrttechnik”, Carl-Hanser-Verlag, 2011

Gunga HC, Werner A, Stahn A, Steinach M, Schlabs T, Koralewski E, Kunz D, Belavý DL, Felsenberg D, Sattler F, Koch J, “The Double Sensor-A non-invasive device to continuously monitor core temperature in humans on earth and in space” in Respir.Physiol.Neurobiol., 2009

Hanns-Christian Gunga, Mathias Steinach, Karl August Kirsch and Andreas Werner, Chapter 7.6 “Space Medicine and Biology” in “Handbook of Space Technology”, Wiley & Sons, 2009

Boldt LH, Fraszl W, Röcker L, Schefold JC, Steinach M, Noack T, Gunga HC, “Changes in the haemostatic system after thermoneutral and hyperthermic water immersion” in Eur.J.Appl.Physio., 2008

Gunga HC, Kirsch KA, Roecker L, Kohlberg E, Tiedemann J, Steinach M, Schobersberger W, “Erythropoietin regulations in humans under different environmental and experimental conditions” in Respir.Physiol.Neurobiol., 2007