To investigate the relationships between race performance and parameters at the optimal power output for lactate removal, 10 male triathletes were examined. Exercise intensities for lactate removal were defined by calculating 50% of difference (DeltaT) between running velocity (V(r)) at individual anaerobic threshold (IAT) and at individual ventilatory threshold (IVT), then choosing 3 V(r): at ...

Background Early research with beta-alanine (b-ALA) supplementation has shown increases in muscle carnosine as well as improvements in body composition, exercise performance and blood lactate levels. Creatine monohydrate supplementation has been extensively researched for its effects on anaerobic exercise performance. Recently, studies have examined the combined effects b-ALA and creatine suppl...

Wireless Biosensors Article number 2201704 by Takeo Miyake and co-workers demonstrates a parity-time symmetric wireless biosensor that can detect small biological signals such as tear glucose level (0.1–0.6 mm) for diabetes diagnosis blood lactate (0.0–4.0 lactic acidosis diagnosis. The proposed system is compared with the conventional system, where it 2000× higher sensitivity linear detection ...

Blood lactate concentrations reflect the balance between lactate production and clearance. During glycolysis in resting state, most glucose is converted to pyruvate. Pyruvate is metabolized through the aerobic pathway, to acetyl-CoA by pyruvate dehydrogenase (PDH) to enter the tricarboxylic acid cycle that is the main source of energy for cellular metabolism. In times of stress, tissue oxygen (...

The effect of oral creatine supplementation on aerobic and anaerobic performance was investigated in 16 elite male rowers during 7-day endurance training. Before and after the daily ingestion of 20 g creatine monohydrate for 5 days (Cr-Group, n=8) or placebo (Pl-Group, n=8), subjects performed two exercise tests on a rowing ergometer: (a) incremental exercise consisting of 3-min stage durations...

BACKGROUND In this observational study near infrared spectroscopy (NIRS) was evaluated as a non-invasive monitor of impaired tissue oxygenation (StO2) after cardiac surgery. StO2, cardiac output, mixed venous oxygen saturation and mean arterial pressure were compared with lactate clearance as established measure for sufficient tissue perfusion and oxygen metabolism. METHODS Forty patients aft...

The aim of this study was to compare the oxygen cost of running in boys with and without Developmental Coordination Disorder (DCD). Fourteen boys with DCD (9.1 ± 1.4 yr) and 16 typically developing (TD) controls (9.4 ± 1.3 yr) were tested on two separate occasions at least a week apart. On the first visit, motor proficiency, body composition and maximal aerobic capacity were established. On the...

We have recently demonstrated that exercise training can induce important hemodynamic and metabolic adaptations in patients with chronic heart failure due to severe left ventricular dysfunction. This study examines the accompanying changes in submaximal exercise performance and the ventilatory response to exercise in these patients. Before and after 16-24 weeks of exercise training, subjects un...

'() To determine the diagnostic value of the lactate concentration in vaginal secretions in determining the premature rupture of membranes (PROM) in pregnant women at the Alavi Educational Treatment Center in Ardebil 2010. *+#,-.") This diagnostic clinical trial enrolled 100 pregnant women with a single pregnancy at the gestational age of 20–41 weeks. The women were divided to two groups of 50;...

OBJECTIVE The determination of postoperative course after cardiac surgery has always been a challenging issue. It is more sophisticated in the pediatric age group. The aim of this investigation was to identify whether increased concentrations of lactate in arterial blood has a predictive value for postoperative morbidity and mortality after heart surgery. METHODS From May 2002 to June 2003, 6...