Relationship between Maximal Pulmonary Ventilation and Arterialized Venous Blood Potassium and Dopamine Concentrations Obtained at Exhaustion in Man.

• MIYAMURA Miharu

  Research Center of Health, Physical Fitness and Sports, Nagoya University

• ISHIDA Koji

  Department of Physical Education, Nagoya Technology Institute

• ITOH Hiroshi

  Department of Physical Education, Nagoya Technology Institute

• OHKUWA Tetsuo

  Department of Physical Education, Nagoya Technology Institute

Bibliographic Information

Other Title

• Relationship between Maximal Pulmonary

Abstract

This study was performed to test the hypothesis that potassium concentration in arterialized blood may be closely related to maximal pulmonary ventilation (VE_max) obtained at exhaustion during maximal exercise in man. Eleven healthy men performed bicycle exercise with incremental loading at 60 rpm until exhaustion. Pulmonary ventilation (VE), oxygen uptake (VO₂), and heart rate (HR) were determined continuously throughout the experiment. Arterialized venous blood samples were collected to measure potassium ([K⁺]), lactate ([La]), hydrogen ion (pH), catecholamine ([CA]), and dopamine ([DA]) concentrations. A significant correlation (r=0.98-0.88) between VE and [K₊], [La], and pH during exercise was observed in all subjects. Furthermore, a close relationship was found in this study between dopamine concentration measured at exhaustion ([DA]₀) and maximal pulmonary ventilation per kilogram of body weight (VE_max/W) (r=−0.668, p<0.05) or maximum oxygen uptake per kilogram of body weight (VO_2max/W) (r=0.720, p<0.05). However, no significant correlation was found between VE_max/W and [K⁺]₀ (r=0.202, NS), [La]₀ (r=−0.096, NS), and pH₀ (r=0.344, NS). These results suggest that dopamine may play a more important role in the determination of maximal pulmonary ventilation during exercise in man than K⁺ or pH.

Journal

• The Japanese Journal of Physiology

  The Japanese Journal of Physiology 48 (1), 17-23, 1998

  THE PHYSIOLOGICAL SOCIETY OF JAPAN

Keywords

• maximal pulmonary ventilation
• bicycle exercise
• dopamine
• potassium
• lactate

Details

• CRID: 1390282680018239744
• NII Article ID: 130004435653
• NII Article ID: 10008303872
• NII Book ID: AA00691224
• DOI: 10.2170/jjphysiol.48.17
• COI: 1:CAS:528:DyaK1cXivVKgsro%3D
• ISSN: 18811396
• ISSN: 0021521X
• NDL BIB ID: 4450306
• PubMed: 9538285
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4450306
• Web Site: https://search.jamas.or.jp/link/ui/1998214604
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed