Prof. Dr. Stephan Geisler

Stephan Geisler studierte an der Deutschen Sporthochschule Köln den Diplom-Studiengang Rehabilitation und Prävention und bekam nach seinem Diplom einen Lehrauftrag im Bereich Krafttraining. Seine Diplomarbeit schrieb er zum Thema "Verletzungen und Überlastungsschäden im Fitnesssport". Dort leitet er bis heute die Fitnesstrainer-Ausbildung. Seine Promotion im Bereich der molekularen Sportmedizin trägt den Titel: "Analyse molekularer Mechanismen trainingsbedingter Skelettmuskeladaptation". Die Arbeit beschäftigt sich schwerpunktmäßig mit dem Wachstumsfaktor Myostatin. 2013 wurde er bei Neugründung der IST-Hochschule für Management zum Professor (FH) ernannt. Dort entwickelte er den Studiengang "Fitnesswissenschaft und Fitnessökonomie", welcher aus einer Mischung von sportwissenschaftlichen und ökonomischen Inhalten besteht. In dem Bestreben, den Begriff der Fitnesswissenschaft als anerkannten Teilbereich der Sportwissenschaft zu etablieren, organisierte er im Februar 2018 den ersten deutschen Fitnesswissenschaftskongress in Düsseldorf. Mit seinem Team betreibt er vor allem Forschung im Bereich der angewandten Fitness-Wissenschaft. Er ist Autor verschiedener Lehrbücher und Publikationen und ist als Reviewer für diverse internationale Journals tätig. Zudem ist er Präsident der NSCA-Germany und Gründungsmitglied des Deutschen Fitnesswissenschaftsrates. Aktuell ist Prof Geisler Vizepräsident für Forschung.

Stephan Geisler studied rehabilitation and prevention at the German Sport University Cologne and was offered a teaching position in the field of strength training after graduating. He wrote his thesis on the subject of “Injuries and overuse injuries in fitness sport”. He is still in charge of fitness trainer training there today. His doctorate in the field of molecular sports medicine is entitled: “Analysis of molecular mechanisms of training-related skeletal muscle adaptation”. The thesis focuses on the growth factor myostatin. In 2013, he was appointed Professor (FH) at the newly founded IST University of Applied Sciences for Management. There he developed the degree program “Fitness Science and Fitness Economics”, which consists of a mixture of sports science and economics content. In an effort to establish the concept of fitness science as a recognized branch of sports science, he organized the first German Fitness Science Congress in Düsseldorf in February 2018. Together with his team, he primarily conducts research in the field of applied fitness science. He is the author of various textbooks and publications and acts as a reviewer for various international journals. He is also President of NSCA-Germany and a founding member of the German Fitness Science Council. Prof. Geisler is currently Vice President for Research.

Vorstellungsvideo
Orcid-Profil

Latest (peer reviewed) publications:

• Effects of Expertise on Muscle Activity during the Hang Power Clean and Hang Power Snatch Compared to Snatch and Clean Pulls - An Explorative Analysis
  Geisler S, Havers T, Isenmann E, Schulze J, Lourens LK, Nowak J, Held S, Haff GG. J Sports Sci Med. 2023 Dec 1;22(4):778-789. doi: 10.52082/jssm.2023.778. PMID: 38045750; PMCID: PMC10690512.

• Held S, Isenmann E, Rappelt L, Wiedenmann T, Kutschki D, Harbrecht J, Kirchner K, Geisler S, Donath L. Six weeks of polarized functional interval training with large training load reductions does not affect performance gains compared to traditional workouts. Front Physiol. 2024 Nov 15;15:1446837. doi: 10.3389/fphys.2024.1446837. PMID: 39619091; PMCID: PMC11604715. https://pubmed.ncbi.nlm.nih.gov/39619091/

• Isenmann E, Held S, Geisler S, Flenker U, Jeffreys I, Zinner C. The effect of the menstrual cycle phases on back squat performance, jumping ability and psychological state in women according to their level of performance -a randomized three-arm crossover study. BMC Sports Sci Med Rehabil. 2024 Nov 2;16(1):224. doi: 10.1186/s13102-024-01010-4. PMID: 39488680; PMCID: PMC11531699. https://pubmed.ncbi.nlm.nih.gov/39488680/

• Christine Eyre J, Weyer J, Geisler S, Gavanda S. Comparison of the effects of isokinetic and isotonic strength training in team sport athletes: A randomized controlled trial. J Biomech. 2024 Aug;173:112246. doi: 10.1016/j.jbiomech.2024.112246. Epub 2024 Jul 23. PMID: 39067184. https://pubmed.ncbi.nlm.nih.gov/39067184/

• Schalla J, Frommelt S, Geisler S, Isenmann E. Is there a beneficial effect of a high-protein diet on body composition and strength capacity in physical active middle-aged individuals?-An eight-week randomized controlled trial. Front Sports Act Living. 2024 Apr 30;6:1346637. doi: 10.3389/fspor.2024.1346637. PMID: 38746828; PMCID: PMC11091325. https://pubmed.ncbi.nlm.nih.gov/38746828/

• Isenmann E, Kaluza D, Havers T, Elbeshausen A, Geisler S, Hofmann K, Flenker U, Diel P, Gavanda S. Resistance training alters body composition in middle-aged women depending on menopause - A 20-week control trial. BMC Womens Health. 2023 Oct 6;23(1):526. doi: 10.1186/s12905-023-02671-y. PMID: 37803287; PMCID: PMC10559623. https://pubmed.ncbi.nlm.nih.gov/37803287/

• Differences in Consumption Behaviour of Dietary Supplements in Competitive Athletes Depends on Sports Discipline.
  Isenmann E, Tolle P, Geisler S, Flenker U, Diel P. Nutrients. 2024 Jan 27;16(3):374. doi: 10.3390/nu16030374. PMID: 38337659; PMCID: PMC10857381

• Muscle strength gains per week are higher in the lower-body than the upper-body in resistance training experienced healthy young women-A systematic review with meta-analysis.
  Jung R, Gehlert S, Geisler S, Isenmann E, Eyre J, Zinner C. PLoS One. 2023 Apr 13;18(4):e0284216. doi: 10.1371/journal.pone.0284216. eCollection 2023. PMID: 37053143 Free PMC article.

• Change to a Plant-Based Diet Has No Effect on Strength Performance in Trained Persons in the First 8 Weeks-A 16-Week Controlled Pilot Study.
  Isenmann E, Eggers L, Havers T, Schalla J, Lesch A, Geisler S. Int J Environ Res Public Health. 2023 Jan 19;20(3):1856. doi: 10.3390/ijerph20031856. PMID: 36767221 Free PMC article. Clinical Trial.

• Comparison of EMG Activity between Single-Leg Deadlift and Conventional Bilateral Deadlift in Trained Amateur Athletes - An Empirical Analysis.
  Diamant W, Geisler S, Havers T, Knicker A.Int J Exerc Sci. 2021 Apr 1;14(1):187-201. eCollection 2021.PMID: 34055137 Free PMC article.

• The Effects of a Macronutrient-Based Diet and Time-Restricted Feeding (16:8) on Body Composition in Physically Active Individuals-A 14-Week Randomised Controlled Trial.
  Isenmann E, Dissemond J, Geisler S.Nutrients. 2021 Sep 6;13(9):3122. doi: 10.3390/nu13093122.PMID: 34578999 Free PMC article. Clinical Trial. 

• Low-intensity blood flow restriction calf muscle training leads to similar functional and structural adaptations than conventional low-load strength training: A randomized controlled trial.
  Gavanda S, Isenmann E, Schlöder Y, Roth R, Freiwald J, Schiffer T, Geisler S, Behringer M.PLoS One. 2020 Jun 30;15(6):e0235377. doi: 10.1371/journal.pone.0235377. eCollection 2020.PMID: 32603351 Free PMC article. Clinical Trial.

• Salivary testosterone and cortisol concentrations after two different resistance training exercises.
  Geisler S, Aussieker T, Paldauf S, Scholz S, Kurz M, Jungs S, Rissmeyer M, Achtzehn S, Zinner C.J Sports Med Phys Fitness. 2019 Jun;59(6):1030-1035. doi: 10.23736/S0022-4707.18.08786-8.PMID: 31204454

• Three Weeks of Detraining Does Not Decrease Muscle Thickness, Strength or Sport Performance in Adolescent Athletes.
  Gavanda S, Geisler S, Quitmann OJ, Bauhaus H, Schiffer T.Int J Exerc Sci. 2020 May 1;13(6):633-644. eCollection 2020.PMID: 32509134 Free PMC article.

• The Effects of High-Intensity Functional Training Compared with Traditional Strength or Endurance Training on Physical Performance in Adolescents: A Randomized Controlled Trial
  Simon Gavanda, Eduard Isenmann, Stephan Geisler, Avery Faigenbaum, Christoph Zinner Randomized Controlled Trial J Strength Cond Res. 2022 Mar 1;36(3):624-632. doi: 10.1519/JSC.0000000000004221.