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Accuracy, reliability, linearity of Accutrend and Lactate Pro versus EBIO plus analyzer
Carlo Baldari1, Valerio Bonavolontà, Gian Pietro Emerenziani
1Unit of Sport Sciences, Department of Health Sciences, University of Rome Foro Italico, Piazza Lauro De Bosis 15, Rome 00194, Italy. carlo.baldari@iusm.it
European Journal of Applied Physiology
|June 16, 2009
Summary
Two portable lactate analyzers, Accutrend Lactate (AL) and Lactate Pro (LP), show good accuracy and reliability for sports research. Both devices are suitable for measuring lactate levels in athletes.
Area of Science:
- Sports Science
- Biomedical Engineering
- Analytical Chemistry
Background:
- Accurate lactate measurement is crucial for monitoring athletic performance and training.
- Hand-portable lactate analyzers offer convenience for field-based assessments.
- Evaluating the performance of portable devices against established analyzers is essential.
Purpose of the Study:
- To assess the accuracy, reliability, and linearity of two hand-portable lactate analyzers: Accutrend Lactate (AL) and Lactate Pro (LP).
- To compare the performance of AL and LP against a reference analyzer, the EBIO plus (EP).
- To determine the suitability of AL and LP for sports research applications.
Main Methods:
- Comparative analysis of lactate measurements from AL and LP against the EP analyzer.
- Evaluation of accuracy using duplicate samples and calculating average differences and limits of agreement.
- Assessment of reliability through coefficient of variation at various lactate concentrations.
- Determination of linearity by comparing slope coefficients against the EP reference.
Main Results:
- Both AL and LP showed statistically significant average differences compared to EP (P < 0.05).
- Limits of agreement were -0.7 to +1.0 mM for AL vs. EP and -1.3 to +1.5 mM for LP vs. EP.
- Reliability was high for both devices (CVs 1.8-3.3% for AL, 2.8-5.0% for LP) with excellent intra-, inter-analyzer, and test strip consistency (ICC r = 0.999).
- The Accutrend Lactate analyzer demonstrated better linearity with a slope coefficient closer to 1 (1.0394) than Lactate Pro (1.1053).
Conclusions:
- Both Accutrend Lactate and Lactate Pro analyzers exhibit good reliability and can be considered suitable for sports research.
- The Accutrend Lactate analyzer shows a slight advantage in linearity compared to the Lactate Pro.
- These portable devices provide a viable option for on-field lactate monitoring in athletic contexts.
