期刊名称：Journal of Nutritional Science and Vitaminology
印刷版ISSN：0301-4800
电子版ISSN：1881-7742
出版年度：2007
卷号：53
期号：6
页码：476-481
DOI：10.3177/jnsv.53.476
出版社：Center for Academic Publications Japan
摘要：The effect of Erabu sea snake ( Laticauda semifasciata ) lipids on the swimming endurance was investigated in aged mice. Fifty three-week-old male Crlj:CD-1 (ICR) mice were fed one of three experimental diets containing either 6% lard, 6% fish oil, or 6% sea snake lipids for 16 wk. The swimming exercise was carried out in an acrylic plastic tank filled with 25 cm of water maintained at 23oC. Swimming times to exhaustion were measured with a load of 2% of their body weights attached to the tails of the mice. The swimming times to exhaustion of the group that were fed the sea snake lipid diet tended to be longer than those of the lard diet group, and were significantly improved compared with the fish oil diet group ( p <0.05). The plasma and muscle lactate levels were significantly lower in the sea snake lipid diet group than in the lard and fish oil diet groups ( p <0.05). The liver glycogen and plasma glucose levels of the sea snake lipid diet group did not differ markedly from those of the lard diet group ( p >0.05), and were significantly higher than those of the fish oil diet group ( p <0.05). These results suggest that an intake of sea snake lipids but not the fish oil, which is also rich in n -3 polyunsaturated fatty acids ( n -3 PUFAs), is useful for improving the swimming endurance of aged mice by attenuating lactate production and/or enhancing lactate clearance during swimming exercise, and the n -3 PUFAs contained in the sea snake lipids did little or nothing for this improved endurance.
