Using a lancet and needle, 12 blood samples were taken from the athletes, including once before the shuttle run test and 11 times (3-min intervals for 30 min) after the shuttle run test (at the resting state). The blood samples were analyzed using the Arkray Lactate Pro2 device (Arkray, Kyoto, Japan) and the appropriate strips. The lactate measurement interval, measurement time, and lactate elimination were established according to Fleming et al. [36 (link)]. The time elapsed during a 50% reduction of the peak lactate concentration was calculated in seconds [36 (link)].
Lactate pro2 device
Manufactured by Arkray
Sourced in Japan
The Lactate Pro2 is a portable blood lactate measurement device. It is designed to measure lactate levels in whole blood samples. The device provides quantitative results to assist in monitoring and evaluating athletic performance and training.
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Lab products found in correlation
5 protocols using lactate pro2 device
1
Lactate Kinetics in Athletes
2
Maternal and Neonatal Lactate Levels
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The primary outcomes were maternal venous blood at one hour after administration of the study drug and neonatal umbilical artery blood lactate at birth, both measured at the bedside using a hand-held Lactate Pro2 device (Arkray Factory, Japan). The maternal blood lactate was measured both at enrollment and at one hour after administration of the study drug package. We further categorized the baseline maternal blood lactate levels into normal, preacidemia and acidemia using cut offs in the NICE guidelines for fetal scalp blood lactate because we could not find any published or widely used values of lactate levels among women with obstructed labour [25 ]. The secondary maternal outcomes of interest were; myometrial capillary blood lactate at cesarean section, primary postpartum hemorrhage (based on clinical diagnosis and treatment), puerperal sepsis, obstetric fistulae, and maternal death up to 14 days postpartum. The secondary perinatal outcomes were; neonatal umbilical vein blood lactate, Apgar score, admission to the neonatal care unit for any reason and perinatal death up to 7 days postnatal.
3
Submaximal Treadmill Incremental Protocol
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After a warm-up (5 min at 8-10 km•h -1 ), participants completed two 4-min submaximal incremental stages on a motorized treadmill (HP cosmos Saturn, Traunstein, Germany), which was set at a speed equivalent to 100% and 120% of the GET, which was determined in the familiarization testing session. The treadmill belt was also set at 1% gradient to reflect the energetic cost of running overground at these speeds ( 17 ). The two stages were briefly interrupted by a 30-s rest period to allow earlobe blood sampling for the determination of blood lactate concentration ([La]b) with a Lactate Pro 2 device (Arkray Inc., Japan). Pulmonary gas exchange was measured on a breath-by-breath basis throughout each stage using a calibrated metabolic system (Cosmed Quark b 2 , Rome, Italy).
4
Maternal and Fetal Lactate Levels
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We measured lactate levels in both umbilical and maternal venous blood at the bedside using a hand-held Lactate Pro2 device (Arkray, Japan Shiga). Maternal blood lactate was measured at enrollment, at one hour after administration of study drug, and from the myometrium at cesarean section (this was the case in 90% of the participants). The myometrial sample was collected using a 2 ml syringe from the initial incision on the lower segment of the uterus before entry into the endometrial cavity. At birth, two samples were obtained from a doubly clamped segment of the umbilical cord.
5
Lactate and Heart Rate Monitoring in Exercise
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Blood lactate concentration (Lac) was assessed before and immediately following the training session, at minutes 3, 5, 10 and 30 using a Lactate Pro 2 device (Arkray, Japan). Basic cardiovascular response was quantified from a heart rate (HR) cardiotachometer (Polar s610i; Polar Electro Oy, Kempele, Finlandia) during all training sessions and over the course of the immediate 30 min post-exercise period. The mean value of HR recorded was classified as working HR (work-HR), rest time between sets HR (rest-HR) and HR along the post-exercise recovery period (HR30).
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