Knechtle Beat, Knechtle Celina, Rosemann Thomas, Nikolaidis Pantelis T
Medbase St. Gallen Am Vadianplatz, St. Gallen, SWITZERLAND.
Institute of Primary Care, University of Zurich, SWITZERLAND.
Int J Exerc Sci. 2018 Jun 1;11(6):856-866. doi: 10.70252/SHCE2721. eCollection 2018.
Although there has been increased scientific interest for physiological responses to endurance running and pacing, limited information exists for adolescents participating in endurance events. We are reporting the case of an untrained 17-year-old female teenager (body mass 50.6 kg, height 167 cm and body mass index 18.1 kg/m) who intended to run a marathon within 6 hours without preparation. The young woman missed her goal by just 2 km. When the average running speed per hour was analysed, there was a major effect of race hour on running speed (p = 0.013, η = 0.320), where the running speed in the fifth hour (6.3 ± 0.2 km/h) was lower than in the second hour (6.9 ± 0.1 km/h). Despite a progressive decrease in running speed, she was still able to put on a final spurt, indicated by a 4 degree non-linear regression (R=0.55). Creatine-kinase reached the initial value again after 5 days and the fall of hemoglobin and hematocrit indicated expansion of plasma volume. Running a marathon as a teenager did not impair physical health, especially when a self-selected pace was adopted. Laboratory parameters during running showed similar changes as have been reported for teenagers and adults after running a marathon. Increased values returned to base line within a few days. In summary, a female teenager at the age of 17 years without specific running preparation is able to achieve nearly a marathon distance during 6 hours of continuous running without harmful effects on health.
尽管科学界对耐力跑和配速的生理反应的兴趣有所增加，但关于青少年参与耐力项目的信息却很有限。我们报告了一名未经训练的17岁女性青少年（体重50.6千克，身高167厘米，体重指数18.1千克/米²）的案例，她打算在没有准备的情况下6小时内跑完马拉松。这位年轻女性只差2公里就达到了目标。当分析每小时的平均跑步速度时，比赛小时数对跑步速度有显著影响（p = 0.013，η = 0.320），其中第五小时的跑步速度（6.3±0.2千米/小时）低于第二小时（6.9±0.1千米/小时）。尽管跑步速度逐渐下降，但她仍能进行最后的冲刺，这由4次非线性回归表示（R = 0.55）。肌酸激酶在5天后再次恢复到初始值，血红蛋白和血细胞比容的下降表明血浆量增加。青少年跑马拉松对身体健康没有损害，尤其是当采用自我选择的配速时。跑步过程中的实验室参数显示出与青少年和成年人跑完马拉松后所报告的类似变化。升高的值在几天内恢复到基线水平。总之，一名17岁未经过特殊跑步训练的女性青少年能够在连续6小时跑步中完成接近马拉松的距离，且对健康没有有害影响。
