1. 1 Coordination during acute isobaric hypoxia without exercise corresponding to altitudes until 4500 m Marius Schwager (sports science student), Dr. Sonja Claus (medic), Dr. Hermann Claus (medic), Prof. i. R. Dr. H.-V. Ulmer (physiologist) Institute for sports science, Johannes Gutenberg-Universität, Mainz, Germany marius.schwager@gmx.de 4th international Symposium:“High altitude influence on human performance: science and praxis” – Bohinjska Bela (Slovenia) Sept. 8-13, 2009

2. 2 mountaineering in high altitude has lots of consequences for human body metabolic aspects/physical fatigue are analyzed well previous study (BURKHARDT 2007) underlines that: -motor aspects are not well analyzed for moderate altitudes -hypoxia might influence coordination high altitudes above ~4000 m: strong effect on body and central nervous system introduction, aims, methods, results, diskussion, conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 introduction

3. 3 show influence of hypoxia on motor aspects focus on „touristical height“ until 4500 m (europe, alps) show progress from low heights to medium heights (2500-4500 m) exclude metabolic aspects/physical fatigue use task-typical tests Introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 aims

4. 4 9 subjects 5 female, 4 male, (students with inconspicuous Hb-values) introduction, aims, methods, results, discussion, final conclusion sitting in a chair in front of table performing 2 tests after a pretest-training until plateau values use of breathing mask: simulating hypoxia via O 2 -reduction simulating practical-relevant tasks for mountaineering: 1) handling a rope 2) handling snap hooks ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 methods

5. 5 introduction, aims, methods, results, discussion, final conclusion 1) test: handling a rope ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009

6. 6 introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 2) test: handling snap hooks

7. 7 introduction, aims, methods, results, discussion, final conclusion isobaric hypoxia was generated (Hypoxico, USA), for 10 min, each 4 levels: low level: “0 m” (= niveau of Mainz), 2500 m, 3500 m and 4500 m systematically changing order one repetition and a control series (“0 m” low level). Measurements of: needed test-time (accuracy: 0.2 s) inspiratory O 2 -concentration heart rate (fingerclip oxymeter) Hb-saturation (fingerclip oxymeter) ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009

8. 8 introduction, aims, methods, results, discussion, final conclusion No principle problems during the alltogether 45 experiments with the 9 subjects ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 results

9. 9 introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 sDsD 1.21.71.82.41.5

10. 10 introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 sDsD 3.43.73.9 3.4

11. 11 introduction, aims, methods, results, discussion, final conclusion relative average difference of needed test-time in relation to averaged 0 m (pre- + posttest) 2500 m3500 m4500 m handling rope7 % 15 % handling snap hooks5 %7 %13 % ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 discussion

12. 12 introduction, aims, methods, results, discussion, final conclusion test: handling a rope median ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 median split

13. 13 introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 median split (2) relative average difference of needed test-time: 4500 m - average 0 m ropesnap hooks > median 22 % 17 % < median 7 % 9 % median 14 %

14. 14 introduction, aims, methods, results, discussion, final conclusion regarding means of test-times: no influence of training effects (continuous) increase from 2500 m – 4500 m effect of hypoxia measurable after 10 min of exposition, each level allover only a very light effect  the coordination is only lightly affected by hypoxia some individuals are higher affected then others  depending on personal disposition some subjects had problems with handling snap hooks and rope  add measurement: “movement quality” ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009

15. 15 only very light effect of hypoxia on coordination until 4500 m while rest (no physical action) some individuals more affected then others  coordinative influence depending distincly on personal disposition stronger negative effect on coordination might be possible  add intensive physical exercise introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 final conclusions

16. 16 introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009 Thanks for your attention

17. 17 Literature 1. BEITZEL, K. (2006): Auswirkungen hypobarer Hypoxie auf die Reaktionsfähigkeit im Alter, Dissertation, Hohe Medizinische Fakultät, Bonn, http://hss.ulb.uni-bonn.de/diss_online/med_fak/2006/beitzel_knut. 2. BURKHARDT, T. (2007): Der Einfluss des Sauerstoffmangels auf die Koordination bzw. Technik beim Bergsport. Diplomarbeit, Institut für Sportwissenschaft Mainz, abstract under: http://www.uni- mainz.de/FB/Sport/physio/pdffiles/BURKHARDT_DiplKurzf_XI-07.pdf. 3. ELSNER, D., HAASE, J. (2000): Bergsport-Handbuch, Reinbek bei Hamburg. 4. MEINEL, K., SCHNABEL, G. (2008). Bewegungslehre – Sportmotorik, Aachen.http://hss.ulb.uni-bonn.de/diss_online/med_fak/2006/beitzel_knuthttp://www.uni- mainz.de/FB/Sport/physio/pdffiles/BURKHARDT_DiplKurzf_XI-07.pdf introduction, aims, methods, results, discussion, final conclusion ________________________________________________________ Schwager et al.: Coordination under Hypoxia, 4th Symposium, 2009