Fatigue and changes of ATP, creatine phosphate, and lactate during the 400-m sprint.
Fatigue and changes of ATP, creatine phosphate, and lactate during the 400-m sprint.
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400米冲刺期间的疲劳和ATP、磷酸肌酸、乳酸的变化。
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
M. Härkönen
中科院分区：
文献类型：
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作者：
J. Hirvonen;A. Nummela;H. Rusko;S. Rehunen;M. Härkönen
通过测量 6 名男性跑步者在四次实验性短跑（100、200、300 和 400 m）前后的肌肉 ATP、磷酸肌酸 (CP)、乳酸 (M-La) 和血乳酸 (B-La)，研究了 400 米短跑期间的疲劳情况。在前 100 m 期间，肌肉 CP 从 15.8 +/- 1.7 下降至 8.3 +/- 0.3 mmol/kg，而 M-La 增加至 3.6 +/- 0.4 mmol/kg。 200 m 后，CP 下降至 6.5 +/- 0.5 mmol/kg，M-La 上升至 8.3 +/- 1.1 mmol/kg。 400米结束时，ATP和CP浓度分别下降27%和89%，M-La增加至17.3+/-0.9mmol/kg。结论是，200 m 后，尽管 CP 未耗尽且乳酸浓度未达到最高水平，但跑步速度下降。当 CP 储存耗尽且 B-La 和 M-La 达到个体最大值时，就会发生完全疲劳。
Fatigue during the 400-m sprint was studied by measuring muscle ATP, creatine phosphate (CP), lactate (M-La), and blood lactate (B-La) in six male runners before and after four experimental sprints (100, 200, 300, and 400 m). During the first 100 m, muscle CP decreased from 15.8 +/- 1.7 to 8.3 +/- 0.3 mmol/kg while M-La increased to 3.6 +/- 0.4 mmol/kg. After 200 m the CP had decreased to 6.5 +/- 0.5 mmol/kg and M-La had increased to 8.3 +/- 1.1 mmol/kg. At the end of the 400 meters, ATP and CP concentrations had decreased by 27% and 89%, respectively, and M-La had increased to 17.3 +/- 0.9 mmol/kg. It was concluded that after 200 m the speed of running decreased, although CP was not depleted and lactate concentration was not at maximum level. Complete fatigue occurred when CP stores were depleted and B-La and M-La attained an individual maximum.