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The respiratory system as an exercise limiting factor in normal trained subjects

  • Urs Boutellier
  • Ramon Büchel
  • Andreas Kundert
  • Christina Spengler
Article

Summary

Recently, we have shown that an untrained respiratory system does limit the endurance of submaximal exercise (64% peak oxygen consumption) in normal sedentary subjects. These subjects were able to increase breathing endurance by almost 300% and cycle endurance by 50% after isolated respiratory training. The aim of the present study was to find out if normal, endurance trained subjects would also benefit from respiratory training. Breathing and cycle endurance as well as maximal oxygen consumption (\(\dot VO_{2 max} \)) and anaerobic threshold were measured in eight subjects. Subsequently, the subjects trained their respiratory muscles for 4 weeks by breathing 85-1601 · min−1 for 30 min daily. Otherwise they continued their habitual endurance training. After respiratory training, the performance tests made at the beginning of the study were repeated. Respiratory training increased breathing endurance from 6.1 (SD 1.8) min to about 40 min. Cycle endurance at the anaerobic threshold [77 (SD 6) %\(\dot VO_{2 max} \)] was improved from 22.8 (SD 8.3) min to 31.5 (SD 12.6) min while\(\dot VO_{2 max} \) and the anaerobic threshold remained essentially the same. Therefore, the endurance of respiratory muscles can be improved remarkably even in trained subjects. Respiratory muscle fatigue induced hyperventilation which limited cycle performance at the anaerobic threshold. After respiratory training, minute ventilation for a given exercise intensity was reduced and cycle performance at the anaerobic threshold was prolonged. These results would indicate the respiratory system to be an exercise limiting factor in normal, endurance trained subjects.

Key words

Respiratory muscle training Breathing endurance Cycle endurance Maximal oxygen consumption Anaerobic threshold 

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References

  1. Allen WK, Seals DR, Hurley BF, Ehsani AE, Hagberg JM (1985) Lactate threshold and distance-running performance in young and older endurance athletes. J Appl Physiol 58:1281–1284Google Scholar
  2. Anholm JD, Stray-Gundersen J, Ramanathan M, Johnson RL Jr (1989) Sustained maximal ventilation after endurance exercise in athletes. J Appl Physiol 67:1759–1763Google Scholar
  3. Belman MJ, Gaesser GA (1988) Ventilatory muscle training in the elderly. J Appl Physiol 64:899–905Google Scholar
  4. Boutellier U, Farhi LE (1986) Influence of breathing frequency and tidal volume on cardiac output. Respir Physiol 66:123–133Google Scholar
  5. Boutellier U, Piwko P (1992) The respiratory system as an exercise limiting factor in normal sedentary subjects. Eur J Appl Physiol 64:145–152Google Scholar
  6. Buess C, Pietsch P, Guggenbühl W, Koller EA (1986) A pulsed diagonal-beam ultrasonic airflow meter. J Appl Physiol 61:1195–1199Google Scholar
  7. Casaburi R, Storer TW, Wasserman K (1987) Mediation of reduced ventilatory response to exercise after endurance training. J Appl Physiol 63:1533–1538Google Scholar
  8. Conconi F, Ferrari M, Ziglio PG, Droghetti P, Codeca L (1982) Determination of the anaerobic threshold by a noninvasive field test in runners. J Appl Physiol 52:869–873Google Scholar
  9. Dodd SL, Powers SK, Thompson D, Landry G, Lawler J (1989) Exercise performance following intense, short-term ventilatory work. Int J Sports Med 10:48–52Google Scholar
  10. Fairbarn MS, Coutts KC, Pardy RL, McKenzie DC (1991) Improved respiratory muscle endurance of highly trained cyclists and the effects on maximal exercise performance. Int J Sports Med 12:66–70Google Scholar
  11. Gimenez M, Cereceda V, Teculescu D, Aug F, Laxenaire MC (1982) Square-wave endurance exercise test (SWEET) for training and assessment in trained and untrained subjects, III. Effect on VO2max and maximal ventilation. Eur J Appl Physiol 49:379–387Google Scholar
  12. Gleser MA, Vogel JA (1973) Endurance capacity for prolonged exercise on the bicycle ergometer. J Appl Physiol 34:438–442Google Scholar
  13. Joyner M (1991) Modeling: optimal marathon performance on the basis of physiological factors. J Appl Physiol 70:683–687Google Scholar
  14. Keens TG, Krastins IRB, Wannamaker EM, Levison H, Crozier DN, Bryan AC (1977) Ventilatory muscle endurance training in normal subjects and patients with cystic fibrosis. Am Rev Respir Dis 116:853–860Google Scholar
  15. Leith DE, Bradley M (1976) Ventilatory muscle strength and endurance training. J Appl Physiol 41:508–516Google Scholar
  16. Mador MJ, Acevedo FA (1991a) Effect of respiratory muscle fatigue on breathing pattern during incremental exercise. Am Rev Respir Dis 143:462–468Google Scholar
  17. Mador MJ, Acevedo FA (1991b) Effect of respiratory muscle fatigue on subsequent exercise performance. J Appl Physiol 70:2059–2065Google Scholar
  18. Martin B, Heintzelman M, Chen H-I (1982) Exercise performance after ventilatory work. J Appl Physiol 52:1581–1585Google Scholar
  19. Morgan DW, Kohrt WM, Bates BJ, Skinner JS (1987) Effects of respiratory muscle endurance training on ventilatory and endurance performance of moderately trained cyclists. Int J Sports Med 8:88–93Google Scholar
  20. Norton KI, Delp MD, Prusaczyk WK, Armstrong RB (1989) A comparison of methods used to determine VO2 of exercising humans and animals. Med Sci Sports Exerc 21:480–486Google Scholar
  21. Sachs L (1984) Angewandte Statistik, 6th edn. Springer, Berlin Heidelberg New YorkGoogle Scholar
  22. Stegemann J (1984) Leistungsphysiologie, 3rd edn. Thieme, Stuttgart, New YorkGoogle Scholar
  23. Wasserman K, McIlroy MB (1964) Detecting the threshold of anaerobic metabolism. Am J Cardiol 14:844–852Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Urs Boutellier
    • 1
  • Ramon Büchel
    • 2
  • Andreas Kundert
    • 2
  • Christina Spengler
    • 1
  1. 1.Department of PhysiologyUniversity of ZürichZürichSwitzerland
  2. 2.Exercise Physiology Research UnitSwiss Federal Institute of TechnologyZürichSwitzerland

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