Most trees have their diameter measured at breast height, which is considered to be four and a half feet above the ground on the uphill side of the tree. Sierra redwoods however, are measured at six feet above the ground. This is because of the major increase in circumference at the lower end of the tree.
With a higher exercise intensity the lactate level in the blood reaches the anaerobic threshold (AT), or the onset of blood lactate accumulation (OBLA).ccurately measuring the lactate threshold involves taking blood samples (normally a pinprick to the finger, earlobe or thumb) during a ramp test where the exercise intensity is progressively increased.
It is important to remember that lactate itself does not cause fatigue, and is actually used as a fuel within aerobic metabolism, where it can be oxidized directly or converted to pyruvate or glucose for oxidation (Philip et al., 2005).he lactate threshold/maximum lactate steady state (MLSS) corresponds to the exercise intensity at which there is a measurable increase in blood lactate levels above baseline values. During relatively low level aerobic activity, blood lactate levels remain low and will not differ significantly from resting values.