艾迪塔罗德雪橇犬比赛对血清甲状腺激素和身体成分的影响。
Effects of the Iditarod Sled Dog Race on serum thyroid hormones and body composition.
作者信息
Case S, Evans D S, Hesslink R L, Reed H L, Chapman R A, Tibbetts G, Mills W J
机构信息
Human Performance Laboratory, Western Maryland College, Westminister.
出版信息
Arctic Med Res. 1993 Jul;52(3):113-7.
Cold exposure, activity and energy deficit have been associated with changes in body composition and/or changes in serum thyroid hormones. Because these conditions are present during the Iditarod Sled Dog Race, 10 volunteer participants were studied before and after the race. Body composition, total thyroxine (TT4), free thyroxine (FT4), total triiodothyronine (TT3), and free triiodothyronine (FT) levels were determined. There was a significant decrease in body weight (p < 0.05) and a decrease in body fat (p < 0.01). There were no significant changes in TT4, FT4, TT3 or FT3. On the basis of this study, it can be concluded that the strenuous activity of the Iditarod mitigates against the classic perturbation in thyroid axis brought on by the hypocaloric state.
寒冷暴露、活动及能量缺乏与身体成分变化和/或血清甲状腺激素变化有关。由于在艾迪塔罗德狗拉雪橇比赛期间存在这些情况，对10名志愿者参与者在比赛前后进行了研究。测定了身体成分、总甲状腺素（TT4）、游离甲状腺素（FT4）、总三碘甲状腺原氨酸（TT3）和游离三碘甲状腺原氨酸（FT3）水平。体重显著下降（p<0.05），体脂减少（p<0.01）。TT4、FT4、TT3或FT3无显著变化。基于这项研究，可以得出结论，艾迪塔罗德比赛的剧烈活动减轻了低热量状态引起的甲状腺轴的典型紊乱。
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