Abstract
This study aimed to compare the performance of a new portable lactate analyser against other standard laboratory methods in three conditions, normal (20 ± 1.3 °C; 40 ± 5 % RH), hot (40 ± 2.5 °C; 40 ± 5 % RH), and humid (20 ± 1.1 °C; 82 ± 6 % RH) conditions. Seven healthy males, ([Mean ± SE]: age, 26.3 ± 1.3 yr; height, 177.7 ± 1.6 cm; weight, 77.4 ± 0.9 kg, V˙O2max, 56.1 ± 1.9 ml × kg × min-1) undertook a maximal cycle ergometry test to exhaustion in the three conditions. Blood was taken every 3 min at the end of each stage and was analysed using the Lactate Pro LT-1710®, the Accusport®, the Analox© GM7 and the Kodak© Ektachem™ systems. The MANOVA (Analyser Type × Condition × Workload) indicated no interaction effect (F(42,
660), = 0.45, p > 0.99, Power = 0.53). The data across all workloads indicated that the machines measured significantly differently to each other (F(4,743) = 14.652, p < 0.0001, Power = 1.00). The data were moderately to highly correlated. We conclude that the Lactate Pro is a simple and effective measurement device for taking blood lactate in a field or laboratory setting. However, we would caution against using this machine to compare data from other machines.
Key words
Lactate pro · lactate · enzymatic · testing · environmental · hot · humid
References
-
1
Altman D, Bland J M.
Measurement in medicine: the analysis method comparison studies.
Statistician.
1983;
32
307-317
-
2
American Diabetes Association .
Consensus statement on self monitoring of blood glucose.
Diabetes Care.
1995;
18
46-52
-
3
Atkinson G, Nevill A M.
Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine.
Sports Med.
1998;
26
217-238
-
4
Bland J M, Altman D G.
Statistical methods for assessing agreement between two methods of clinical measurement.
Lancet.
1986;
307-310
-
5
Bonifazi M, Martelli G, Marugo L, Sardella F, Carli G.
Blood lactate accumulation in top level swimmers following competition.
J Sports Med Phys Fit.
1993;
33
13-18
-
6 Coyle E F. Integration of the physiological factors determining endurance performance ability. In: Holloszy JO, (ed) Exercise and Sports Science Reviews. Baltimore; Williams and Wilkins 1995: 25-63
-
7
di Prampero P E.
Energetics of muscular exercise.
Rev Physiol Biochem Pharm.
1981;
89
144-122
-
8
Fell J W, Rayfield J M, Gulbin J P, Gaffney P T.
Evaluation of the Accusport® Lactate Analyser.
Int J Sports Med.
1998;
19
199-204
-
9
Green S, Dawson B.
Measurement of anaerobic capacities in humans. Definitions, limitations and unsolved problems.
Sports Med.
1993;
15
312-327
-
10
Hopkins W G.
Measures of reliability in sports medicine and sports science.
Sports Med.
2000;
30
1-5
-
11
Makita S, Satomi J.
Reliability of simplified blood lactate test meter (Lactate Pro).
J Clin Sports Med.
1997;
14
1-7
-
12
Medbo J I, Mohn A C, Tabata I, Bahr R, Vaage O, Sejersted O M.
Anaerobic capacity determined by maximal accumulated O2 deficit.
J Appl Physiol.
1988;
64
50-60
-
13
Nevill A, Atkinson G.
Assessing agreement between measurements recorded on a ratio scale in sports medicine and sports science.
Br J Sports Med.
1997;
31
314-318
-
14
Pyne D B, Boston T, Martin T, Logan A.
Evaluation of the lactate pro blood lactate analyser.
Eur J Appl Phys.
2000;
82
112-116
-
15
Pfitzinger P, Freedson P S.
The reliability of lactate measurements during exercise.
Int J Sports Med.
1998;
19
349-357
-
16
Sjodin B, Jacobs I.
Onset of blood lactate accumulation and marathon running performance.
Int J Sports Med.
1981;
2
23-26
-
17
Telford R.
Lactic acid measurements - are they useful.
Sports Sci Med Q.
1984;
1
2-7
-
18 Terashimi K, Katsuhiko T, Wakayoshi K. Development of a small and simple lactate test meter with minimum sample volume of 5 l. Kyoto, Japan; ArkrayKDK Corporation 1997
-
19
Yoshida T, Chida M, Ichioka M, Suda Y.
Blood lactate parameters related to aerobic capacity and endurance performance.
Eur J Appl Physiol.
1987;
56
7-11
-
20
Welsman J.
Methodological problems of lactate testing.
Coaching Focus.
1992;
21
14-15
Prof. L. Mc Naughton
University of Bath
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