Zusammenfassung
In zwei formal identischen Laufbandstufentests, einmal nach normalen Ruheausgangsbedingungen (Test I), dann unter arbeitsinduzierter Laktatazidose, (Test II), wurden [K+], Hf, \(\dot{V}E, \dot{V}{{O}_{2}},\dot{V}C{{O}_{2}}\), Säuren-Basenstatus (SBS) und [Laktat] bestimmt. Während die Ventilationsparameter, Hf und [K+] in Test I und II weitgehend gleichartiges Verhalten und gute Reproduzierbarkeit zeigten, entwickelten sich [Laktat] und SBS in Test II völlig anders als in Test I. Schlußfolgerung:
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1)
Hf und \(\dot{V}E\) stehen offensichtlich in keinem direkten Zusammenhang mit dem SBS oder der [Laktat].
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2)
Gute Reproduzierbarkeit und enge Anlehnung an \(\dot{V}E\) und HF machen die Plasma-[K+] als Belastungskriterium denkbar.
Summary
Two incremental treadmill tests were performed: one after resting conditions, the second during exercise induced lactic acidosis. [K+], HR, \(\dot{V}E, \dot{V}{{O}_{2}},\dot{V}C{{O}_{2}}\), the acid base status (ABS) and [lac−] were measured. While [K+], \(\dot{V}E\) and HR showed a quite similar behaviour in both tests, the direction of change in [lac−] and ABS was different in test I and II. Conclusions:
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1)
There is obviously no direct response of HR and \(\dot{V}E\) to changes in [lac−] and ABS.
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2)
Because of a good reproducibility and a positive relationship with \(\dot{V}E\) and HR, [K+] might turn out to be a useful indicator of physiological strain.
Anschrift für die Verfasser: Prof. Dr. med. M. W. Busse, Medizinische Hochschule, Abt. Sport- und Arbeitsphysiologie, Konstanty-Gutschow-Straße, 3000 Hannover
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Busse, M.W., Maassen, N., Böning, D. (1985). Plasma-Kaliumkonzentration als Kriterium der Ausbelastungssituation?. In: Franz, IW., Mellerowicz, H., Noack, W. (eds) Training und Sport zur Prävention und Rehabilitation in der technisierten Umwelt / Training and Sport for Prevention and Rehabilitation in the Technicized Environment. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70301-0_45
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