Zhang Guihua, Higuchi Tomoyuki, Shirai Nobuya, Suzuki Hiramitsu, Shimizu Eiji
United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu City, Japan.
Ann Nutr Metab. 2007;51(3):281-7. doi: 10.1159/000105450. Epub 2007 Jul 9.
BACKGROUND/AIM: This study was designed to investigate the effect of Erabu sea snake (Laticauda semifasciata) lipids on the swimming endurance of mice.
Twelve-week-old male Crlj: CD-1 (ICR) mice were fed one of three experimental diets containing 6% lard, fish oil or sea snake lipids for 16 weeks. Swimming exercise was conducted in an acrylic plastic tank filled with 25 cm of water maintained at 23 degrees C. Every 4 weeks, the mice were made to perform swimming exercises with loads attached to their tails, corresponding to approximately 1 or 2% of their body weights.
The group fed the sea snake lipid diet exhibited significantly improved swimming endurance compared with the lard diet group (p < 0.05); however, this result was not observed in the fish oil diet group. In the sea snake lipid diet group, plasma and muscle lactates were significantly lower, and plasma glucose and muscle glycogen were significantly higher than in the lard diet group (p < 0.05).
These results suggest that the intake of sea snake lipids enhanced the swimming endurance of the mice by delaying the accumulation of lactate during swimming exercise.
背景/目的：本研究旨在探究海蛇（半环扁尾海蛇）脂质对小鼠游泳耐力的影响。
将12周龄的雄性Crlj:CD-1（ICR）小鼠分为三组，分别喂食含6%猪油、鱼油或海蛇脂质的三种实验饮食，持续16周。在一个装有25厘米深、温度保持在23摄氏度水的丙烯酸塑料水箱中进行游泳训练。每4周，让小鼠拖着相当于其体重约1%或2%的重物进行游泳训练。
与猪油饮食组相比，喂食海蛇脂质饮食的组游泳耐力显著提高（p<0.05）；然而，鱼油饮食组未观察到这一结果。与猪油饮食组相比，海蛇脂质饮食组的血浆和肌肉乳酸含量显著降低，血浆葡萄糖和肌肉糖原含量显著升高（p<0.05）。
这些结果表明，摄入海蛇脂质可通过延缓游泳运动中乳酸的积累来增强小鼠的游泳耐力。
