Ridwan Rasdin, Razak Hairil Rashmizal Abdul, Adenan Mohd Ilham, Saad Wan Mazlina Md
Centre of Medical Laboratory Technology, Faculty of Health Sciences, Universiti Teknologi MARA, Selangor 42300, Malaysia.
Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Selangor 43400, Malaysia.
Prev Nutr Food Sci. 2019 Mar;24(1):41-48. doi: 10.3746/pnf.2019.24.1.41. Epub 2019 Mar 31.
Nutritional intervention of fruit juice supplementation is able to maximize exercise performance. Watermelon [ (Thunb.) Matsum. and Nakai] contains high L-citrulline content and consumption of watermelon juice may promote ergogenic effects. The aim of the present study was to investigate the role of 100% flesh watermelon juice and 100% rind watermelon juice supplementation for 14 days on swimming performance in rats. Twenty four male Sprague-Dawley rats were randomly divided into four groups: Cx group of rats supplemented with filtered tap water (negative control), L-cit group of rats supplemented with L-citrulline (positive control), FR group of rats supplemented with 100% flesh watermelon juice, and RR group of rats supplemented with 100% rind watermelon juice. Each group was supplemented for 14 days prior to swimming exercise protocol. The rats were performed swimming exercise for 3 days and swimming time until exhaustion was measured. Plasma samples were collected to measure lactate concentration, ammonia concentration, and nitric oxide production. Rats supplemented with 100% flesh watermelon juice demonstrated significantly prolonged of swimming time until exhaustion, reduction of lactate and ammonia concentrations, and increased of nitric oxide production compared to Cx and L-cit groups (<0.05). These findings postulate that supplementation with 100% flesh watermelon juice improves endurance in swimming performance.
补充果汁的营养干预能够使运动表现最大化。西瓜[（松村和中井）]含有高含量的L-瓜氨酸，饮用西瓜汁可能会产生促力效应。本研究的目的是调查连续14天补充100%西瓜果肉汁和100%西瓜皮汁对大鼠游泳表现的作用。24只雄性Sprague-Dawley大鼠被随机分为四组：饮用过滤自来水的Cx组（阴性对照）、补充L-瓜氨酸的L-cit组（阳性对照）、补充100%西瓜果肉汁的FR组和补充100%西瓜皮汁的RR组。在进行游泳运动方案之前，每组补充14天。大鼠进行3天游泳运动，并测量直至疲劳的游泳时间。采集血浆样本以测量乳酸浓度、氨浓度和一氧化氮生成量。与Cx组和L-cit组相比，补充100%西瓜果肉汁的大鼠直至疲劳的游泳时间显著延长，乳酸和氨浓度降低，一氧化氮生成量增加（<0.05）。这些发现表明，补充100%西瓜果肉汁可提高游泳表现的耐力。
