Verification of the heart rate threshold.

Among the methods for determining anaerobic threshold (AT), the heart rate (HR) method seems to be the simplest. On the other hand, many conflicting results from comparing this method with others have been presented over the last 10 years. Therefore, the aim of this study was to compare the heart rate threshold (HRT) with the lactate turn point (LTP)-"second" break point of dependence of lactate (LA) to power output, ventilatory threshold (VT) and threshold determined by electromyography (EMGAT), all determined by the same exercise test and evaluated by the same computer algorithm.

Heart rate threshold related to lactate turn point and steady-state exercise on a cycle ergometer.

The aim of this study was to investigate heart rate threshold (HRT) related exercise intensities by means of two endurance cycle ergometer tests using blood lactate concentration [La], pulmonary ventilation (VE), oxygen uptake (VO2), heart rate (HR) and electromyogram (EMG) activity of working muscle. Firstly, 16 healthy female students [age, 21.4 (SD 2.

Heart Rate Determination of Anaerobic Threshold in Children.

Ethical and logistical limitations preclude the routine determination of anaerobic threshold in children by invasive measurement of blood lactate concentrations or ventilatory parameters. A noninvasive field test developed by Conconi can be used to determine anaerobic threshold through analysis of the heart rate curve during increased exercise workloads. Although this test was initially evaluated in adult athletes, recent data indicate that the Conconi test is applicable to children in both laboratory and field settings.

[Comparison of heart rate to lactate threshold and to Conconi's threshold in children].

The heart rate (HR) at the lactate threshold was determined on a treadmill in 59 children with an average age of 11.8 years. 45 minutes later, they had to go through a vita maxima test on a bicycle ergometer.

A noninvasive method of determining the anaerobic threshold in children.

In 72 11-year-old male and female children the anaerobic threshold (AT) was determined on a treadmill with the invasive method of the lactate test. After a break of 45 min an alternative method for determining AT on a bicycle ergometer was used. A loading method with an increment of 10 W/min was chosen.