caa a22 4500 467942358 CHVBK 20180406153016.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s00421-006-0156-2 doi (NATIONALLICENCE)springer-10.1007/s00421-006-0156-2 Influence of lung volume, glossopharyngeal inhalation and P ETO2 and P ETCO2 on apnea performance in trained breath-hold divers [Elektronische Daten] [Kristian Overgaard, Søren Friis, Rasmus Pedersen, Gunnar Lykkeboe] Breath-hold divers train and compete in maximal apnea performance. Glossopharyngeal inhalation (GI) is commonly used to increase lung volume above vital capacity (VC) prior to apnea. We investigated the hypothesis that this practice would increase apnea performance and relaxed airway pressure. Seven well-trained breath-hold divers performed maximal bouts of apnea at three different lung volumes (85% VC, VC and VC + GI) both at rest (dry static apnea) and during underwater swimming (dynamic apnea). Heart rate, apnea time and end tidal PCO2 and PO2 (P ETCO2 and P ETO2) were recorded. In addition, relaxed airway pressure was measured after GI. Maximal GI increased lung volume by 1.59±0.57l above VC and increased relaxed airway pressure to from 3.5±0.5 to 8.7±1.7kPa. Dry static apnea time was higher at VC + GI (346±46s) than at VC (309±38s, P<0.05) and 85% VC (297±48s, P<0.01). Likewise, dynamic apnea time was higher at VC + GI (97±27s) than at VC (78±14s, P<0.05) and 85% VC (71±17s, P<0.05). P ETO2 values reached 3.5±0.6kPa at the end of dry static apnea bouts and this was not different from dynamic apnea when taking hydrostatic pressure at swimming depth into account (3.7±0.6kPa, P=0.48). In conclusion, GI increases lung volume, relaxed airway pressure and apnea performance in well-trained breath-hold divers. Springer-Verlag, 2006 Lung packing nationallicence Lung compliance nationallicence Hypoxia nationallicence Overgaard Kristian Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut Friis Søren Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut Pedersen Rasmus Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut Lykkeboe Gunnar Department of Zoophysiology, University of Aarhus, C.F. Møllers Allé 131, Universitetsparken, 8000, Aarhus C, Denmark aut European Journal of Applied Physiology Springer-Verlag 97/2(2006-05-01), 158-164 1439-6319 97:2<158 2006 97 421 https://doi.org/10.1007/s00421-006-0156-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-006-0156-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Overgaard Kristian Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut NATIONALLICENCE 700 1- Friis Søren Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut NATIONALLICENCE 700 1- Pedersen Rasmus Department of Sport Science, University of Aarhus, Katrinebjergvej 89C, 8200, Aarhus N, Denmark aut NATIONALLICENCE 700 1- Lykkeboe Gunnar Department of Zoophysiology, University of Aarhus, C.F. Møllers Allé 131, Universitetsparken, 8000, Aarhus C, Denmark aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 97/2(2006-05-01), 158-164 1439-6319 97:2<158 2006 97 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer