Reliability and Validity of the Lactate Pro 2 Analyzer

This study evaluated the reliability of portable Lactate Pro 2 analyzer (LP2), and its validity compared to a laboratory-based analyzer, YSI 1500 Sport (YSI). Blood samples (n = 258) were collected during 44 graded incremental rowing tests, with data from 17 tests used quantify load, heart rate, oxygen consumption at lactate threshold. Inter-LP2 was high coefficient variation 3.3%; Bland Altman 95% limits agreement varied ± 0.3 mmol.L?1 for blood (BLa) ?4.0 ?1.6 +1.4 BLa >8.0 mmol.L?1, minimal systematic bias. Despite LP2 measurements being ~1.42 times higher than measurements, no significant differences (P > .05) detected when quantifying or The results support using different devices interchangeably, especially ? 8 identify training intensities