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.
February 10, 2016 By Dr. Andrew Coggan, Ph.D. For more than 30 years, exercise physiologists have known that the exercise intensity at which lactate begins to accumulate in a personâs blood, lactate threshold (LT), is a powerful predictor of their endurance performance ability.