Tanaka H, Shindo M
Int J Sports Med. 1985 Apr;6(2):90-4. doi: 10.1055/s-2008-1025820.
Running velocities at the blood lactate threshold, which was estimated by the velocity just below 2 mmol X l-1 of blood lactate, were measured in sixty-six 6- to 15-year-old boys during a graded exercise stress test on the track and compared with those of twenty-three 16- to 18-year-old young males and eighteen 18- to 23-year-old untrained young males. The boys were divided into five age groups: 6-7, 8-9, 10-11, 12-13, and 14-15. The mean velocity at the lactate threshold of all age groups was significantly higher than that of untrained young males and not different from that of trained young males. There was no significant difference between boys of all age groups, but a significant negative correlation between the velocity at the lactate threshold and bone maturity score (RUS score) of more than 200 was found in boys. Heart rates and percent maximal heart rate at the lactate threshold were dependent on age. These were significantly inversely related to the chronological age and RUS score. These results suggest that maturation is one of the factors influencing lactate threshold.
在跑道上进行的分级运动应激试验中，测量了66名6至15岁男孩的血乳酸阈值时的跑步速度（通过略低于2 mmol X l-1血乳酸的速度估算），并与23名16至18岁年轻男性和18名18至23岁未受过训练的年轻男性的速度进行了比较。这些男孩被分为五个年龄组：6 - 7岁、8 - 9岁、10 - 11岁、12 - 13岁和14 - 15岁。所有年龄组在乳酸阈值时的平均速度显著高于未受过训练的年轻男性，且与受过训练的年轻男性无差异。所有年龄组男孩之间无显著差异，但发现男孩的乳酸阈值时的速度与骨成熟度评分（RUS评分）超过200之间存在显著负相关。乳酸阈值时的心率和最大心率百分比取决于年龄。这些与实际年龄和RUS评分显著负相关。这些结果表明成熟度是影响乳酸阈值的因素之一。
