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Eur J Appl Physiol (2010) 109:551559 DOI 10.1007/s00421-010-1379-9
SHORT COMMUNICATION
Evaluation of three portable blood lactate analysers: Lactate Pro, Lactate Scout and Lactate Plus
Rebecca K. Tanner Kate L. Fuller
Megan L. R. Ross
Accepted: 20 January 2010 / Published online: 10 February 2010 Springer-Verlag 2010
Abstract Three portable blood lactate analysers, Lactate Pro (LP), Lactate Scout (LS) and Lactate Plus (L?), were evaluated. Analyser reliability and accuracy was assessed. For reliability, intra- and inter-analyser comparisons demonstrated that the LP (intra-TE = 0.5 mM, inter-TE =0.4 mM) and L? (intra-TE = 0.4, inter-TE = 0.4 mM) displayed greater overall reliability than the LS (intra-TE = 1.0, inter-TE = 0.8 mM). At BLa \ 4.0 mM, the
LP (intra-TE = 0.1 mM) demonstrated greater reliability than the LS (intra-TE = 0.5 mM) and L? (intra-TE =0.4 mM). At BLa [ 8.0 mM, the LP (intra-TE = 0.5 mM, inter-TE = 0.4 mM) and L? (intra- and inter-TE =
0.4 mM) displayed greater reliability than the LS (intra-TE = 1.1 mM, inter-TE = 0.9 mM). For accuracy, the L? (SEE = 0.6 mM) compared more favourably to the LP than the LS (SEE = 1.1 mM). At BLa *1.018.0 mM, the
LS produced values that were up to 0.9 mM higher than the LP; the L? produced BLa that were within 0.1 mM. All portable analysers tended to under-read the ABL 700 analyser. The suitability of the LP and L? as accurate analysers is supported by strong correlations (r = 0.91 and r = 0.94) and limits of agreement B2.1 mM. This study showed that the LP and L?, compared well to each other, displayed good reliability and accuracy when compared to
a laboratory-based analyser. Although the LS also displayed relatively good reliability, it was not as reliable or accurate as the LP or L?.
Keywords Portable lactate analysers Lactate pro
Lactate scout Lactate plus Accuracy Reliability
Linearity
Introduction
Measurement of the blood lactate response to exercise is a common inclusion in the physiological assessment of high-performance endurance athletes. Many exercise physiology laboratories measure blood lactate response to incremental exercise in conjunction with measures of intensity, heart rate (HR) and oxygen uptake _
VO2: Lactate analysis is commonly performed as it can serve as an indicator of...