首页> 外文期刊>Journal of the International Society of Sports Nutrition >Acute versus chronic supplementation of sodium citrate on 200?m performance in adolescent swimmers
【24h】

Acute versus chronic supplementation of sodium citrate on 200?m performance in adolescent swimmers

机译:急性和慢性补充柠檬酸钠对青少年游泳者200?m成绩的影响

获取原文
           

摘要

Background A double-blinded, placebo-controlled, cross-over design was used to investigate whether two different sodium citrate dihydrate (Na-CIT) supplementation protocols improve 200 m swimming performance in adolescent swimmers. Methods Ten, male swimmers (14.9?±?0.4 years of age; 63.5?±?4 kg) performed four 200 m time trials with the following treatments: acute (ACU) supplementation (0.5 g kg-1 administered 120 min pre-trial), acute placebo (PLC-A), chronic (CHR) supplementation (0.1 g?kg-1 for three days and 0.3 g kg-1 on the forth day 120 min pre-trial), and chronic placebo (PLC-C). The order of the trials was randomized, with at least a six-day wash-out period between trials. Blood samples were collected by finger prick pre-ingestion, 100 min post-ingestion, and 3 min post-trial. Performance time, rate of perceived exertion, pH, base excess, bicarbonate and lactate concentration were measured. Results Post-ingestion bicarbonate and base excess were higher (P?
机译:背景技术采用双盲,安慰剂对照,交叉设计来研究两种不同的柠檬酸钠二水合物(Na-CIT)补充方案是否能改善青少年游泳者200 m的游泳性能。方法十名男性游泳者(14.9岁±0.4岁; 63.5岁±4 kg)进行了四个200 m的时间试验,并采用以下治疗方法:急性(ACU)补充(0.5 g kg-1的试验前120分钟服用) ),急性安慰剂(PLC-A),慢性(CHR)补充剂(三天0.1 g?kg-1,预试验120分钟第四天补充0.3 g kg-1)和慢性安慰剂(PLC-C) 。试验顺序是随机的,两次试验之间至少有六天的清除期。采血前,采食后100分钟和试验后3分钟采血。测量运动时间,感觉的运动速度,pH,碱过量,碳酸氢根和乳酸浓度。结果与安慰剂显示出足够的运动前碱中毒相比,在ACU和CHR试验中,碳酸氢盐和碱的过量摄入均较高(P≤0.05)。但是,试验之间的执行时间,感觉的运动速度以及试验后的pH和乳酸浓度没有显着差异。进一步的分析表明,与ACL-PLC试验相比,ACU中的五名游泳者的表现时间提高了1.03%(P 0.05),并获得了更高的试验后乳酸浓度(P 0.05)。与ACU和CHR试验中的无反应者相比,他们的试验后乳酸浓度也明显更高。结论在200 m游泳运动之前急性补充Na-CIT导致适度的时间改善和仅一半的游泳者血液乳酸浓度升高,而慢性Na-CIT补充对这组青春期游泳者没有任何致畸作用。试用注册Clinicaltrials.gov NCT01835912。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号