Leistungsmessungen im Wasser mit einem neuen Kraftmess-Kurbelsystem

Zusammenfassung

Fragestellung:

Ziel der Studie war es, die Reliabilität der Einstellwerte eines neu entwickelten Arm-/Beindrehkurbelergometer (Reha-Aquabike) bei gestufter Belastungsführung im Wasser zu überprüfen.

Material und Methoden:

In wiederholten Messungen wurde bei Arm-/Beinarbeit (A+B) und Beinarbeit (B) in Wasser (W) und an Land (L) mit demselben Ergometer das Belastungsverhalten 12 gesunder männlicher Probanden anhand der Sauerstoffaufnahme (VO₂) bestimmt. Die Streuung der Wiederholungsmessungen wurde mit der Bland-Altman-Methode quantifiziert.

Ergebnisse:

Die Mittelwerte der Testwiederholungen unterschieden sich nicht (p>0,05). ­Innerhalb der Übereinstimmungsgrenzen 68,9±423 ml*min^− 1 (A+B) und 69,7±354 ml*min^− 1 (B) lagen 95% der Differenzen.

Diskussion:

Das Wiederholungsverfahren lieferte gleiche VO₂-Ergebnisreihen.

Schlussfolgerung:

Innerhalb der Übereinstimmungsgrenzen sind die Einstellwerte des Wasser­ergometers präzise und das Bremsverhalten ­beständig.

Abstract

Purpose:

Our objective was to investigate the reliability of a newly developed whole body water ergometer (Reha-Aquabike).

Materials and methods:

12 healthy subjects performed repeated exercise tests. There were 4 tests which included combined arm-leg-ergometry (A+B) and cycling alone (B) in water (W) and on land (L). A revolution and a step protocol were followed. Oxygen and carbon dioxide were measured to calculate gas exchange. The scatter of the oxygen consumption (VO₂) values was analyzed with the Bland-Altman method and ANOVA.

Results:

The results of the repeated tests showed no difference in the means (p>0.05). Limits of agreement were 68.9±423 ml*min^− 1 (A+B) and 69.7±354 ml*min^− 1 (B) and included 95% of the values.

Discussion:

The repeated measures of VO₂ were comparable and the step protocol was reproducible.

Conclusions:

The cut-off-points of the Reha-Aquabike are adequate and the control system is accurate.

Schlüsselwörter

Validität - Arm-Bein-Ergometrie - Ergebnismessung - Wiederholbarkeit

Key words

validity - arm-leg-exercise - outcome assessment - repeatability

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