Relationship between maximal pulmonary ventilation and arterialized venous blood potassium and dopamine concentrations obtained at exhaustion in man

The Japanese Journal of Physiology
M MiyamuraT Ohkuwa

Abstract

This study was performed to test the hypothesis that potassium concentration in arterialized blood may be closely related to maximal pulmonary ventilation (V.Emax) obtained at exhaustion during maximal exercise in man. Eleven healthy men performed bicycle exercise with incremental loading at 60 rpm until exhaustion. Pulmonary ventilation (V.E), oxygen uptake (V.O2), 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 V.E 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 (V.Emax/W) (r = -0.668, p < 0.05) or maximum oxygen uptake per kilogram of body weight (VO2MAX/W) (r = 0.720, p < 0.05). However, no significant correlation was found between V. Emax/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 rol...Continue Reading

References

Sep 1, 1975·Journal of Applied Physiology·K WassermanM G Cleary
Jan 1, 1978·The Journal of Physiology·F Llados, P Zapata
Jun 1, 1978·The Journal of Physiology·R J Docherty, D S McQueen
Jun 1, 1975·Journal of Applied Physiology·C A HirshmanJ V Weil
Oct 1, 1992·Journal of Applied Physiology·M McCoy, M Hargreaves
Jan 1, 1990·European Journal of Applied Physiology and Occupational Physiology·T YoshidaM Udo
May 1, 1990·Respiration Physiology·P E di Prampero, G Ferretti
Apr 1, 1990·Journal of Applied Physiology·J M HagbergS L Heller
Feb 1, 1990·The Journal of Physiology·J I Medbø, O M Sejersted
Jul 1, 1989·Journal of Applied Physiology·R A WachG R Barer
Dec 1, 1989·Respiration Physiology·D J PatersonJ Conway
Jun 1, 1989·Journal of Applied Physiology·S K PowersG Landry
Dec 1, 1986·Journal of Applied Physiology·C L Boetger, D S Ward
Jan 1, 1987·Sports Medicine·S K Powers, J Williams
Jan 1, 1985·Respiration Physiology·R A Linton, D M Band
Jun 1, 1971·Respiration Physiology·R S Fitzgerald, D C Parks
Nov 11, 1972·The American Journal of Physiology·A M BlackL Jacobs
Jan 1, 1972·Journal of Applied Physiology·H V ForsterG A DoPico
Jan 1, 1983·Annual Review of Physiology·P T ByeC Roussos
Nov 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·D S Ward, J W Bellville
Nov 1, 1994·International Journal of Sports Medicine·B B YaspelkisJ L Ivy
Oct 1, 1994·Physiological Reviews·C GonzalezR Rigual
Mar 1, 1994·The Journal of Physiology·N K VøllestadO M Sejersted
Feb 1, 1994·Respiration Physiology·P McLoughlinD M Band

❮ Previous
Next ❯

Citations

Aug 20, 2014·Medicine and Science in Sports and Exercise·Hidehiro NakaharaTadayoshi Miyamoto
Sep 13, 2008·Journal of Applied Physiology·Naoto FujiiTakeshi Nishiyasu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.