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Presleep Protein Supplementation Does Not Improve Recovery During Consecutive Days of Intense Endurance Training: A Randomized Controlled Trial.
International Journal of Sport Nutrition and Exercise Metabolism ( IF 3.0 ) Pub Date : 2019-07-01 , DOI: 10.1123/ijsnem.2018-0286
Mads S Larsen 1, 2 , Dagmar Clausen 1 , Astrid Ank Jørgensen 1 , Ulla R Mikkelsen 2 , Mette Hansen 1
Affiliation  

Recent studies demonstrate that protein ingestion immediately before sleep improves muscle recovery during the night following resistance exercise. Whether this feeding strategy benefits recovery from endurance training has yet to be established. The aim of this study was to investigate the effects of whey protein isolate ingested every night before sleep on subsequent performance and circulatory markers of muscular recovery during a week of intensified endurance training mimicking a training camp. In a parallel design, 32 trained runners underwent a 1-week intervention with a rigorously controlled diet (carbohydrate = 7.2 g·kg-1·day-1, protein = 1.8 g·kg-1·day-1, and fat = 1.0 g·kg-1·day-1) and exercise program (11 sessions) while receiving either a protein (0.5 g·kg-1·day-1) or carbohydrate (0.5 g·kg-1·day-1) beverage every night before sleep. Blood samples were obtained on the morning of Days 1, 4, 7, and 8 and analyzed for markers of muscle damage (creatine kinase, lactate dehydrogenase, and myoglobin). The postintervention 5-km time-trial performance was significantly impaired in both groups (11 ± 24 s, p < .01). Plasma creatine kinase (227% ± 221%, p < .01), lactate dehydrogenase (18% ± 22%, p < .01), and myoglobin (72% ± 62%, p < .01) increased gradually throughout the week with no difference between the groups (p > .05). In conclusion, the presleep protein ingestion did not reduce the decline in performance or ameliorate the rise of circulatory markers of muscle damage during a week of intensified training when compared with the isocaloric carbohydrate ingestion.

中文翻译:

连续的强化耐力训练期间,补充睡前蛋白质不能改善恢复能力:一项随机对照试验。

最近的研究表明,睡眠前立即摄取蛋白质可改善抵抗运动后夜间的肌肉恢复。这种喂养策略是否能使耐力训练恢复健康尚待确定。这项研究的目的是研究在每晚模拟训练营的强化耐力训练期间,每晚睡前摄入的乳清蛋白分离物对随后的表现和肌肉恢复循环指标的影响。在平行设计中,对32名训练有素的跑步者进行了为期1周的干预,严格控制饮食(碳水化合物= 7.2 g·kg-1·day-1,蛋白质= 1.8 g·kg-1·day-1和脂肪= 1.0 g•kg-1•day-1)和运动计划(11节),同时每次接受蛋白质(0.5 g•kg-1•day-1)或碳水化合物(0.5 g•kg-1•day-1)饮料睡前一晚。在第1、4、7和8天的早晨采集血样,并分析肌肉损伤的标志物(肌酸激酶,乳酸脱氢酶和肌红蛋白)。两组的干预后5 km时间试验性能均显着受损(11±24 s,p <.01)。血浆肌酸激酶(227%±221%,p <.01),乳酸脱氢酶(18%±22%,p <.01)和肌红蛋白(72%±62%,p <.01)在整个星期逐渐增加两组之间无差异(p> .05)。总之,与等热量的碳水化合物摄入相比,在强化训练的一周内,摄入睡前蛋白质不会减少性能下降或改善肌肉损伤的循环指标。和8,并分析了肌肉损伤的标志物(肌酸激酶,乳酸脱氢酶和肌红蛋白)。两组的干预后5 km时间试验性能均显着受损(11±24 s,p <.01)。血浆肌酸激酶(227%±221%,p <.01),乳酸脱氢酶(18%±22%,p <.01)和肌红蛋白(72%±62%,p <.01)在整个星期逐渐增加两组之间无差异(p> .05)。总之,与等热量的碳水化合物摄入相比,在强化训练的一周内,摄入睡前蛋白质不会减少性能下降或改善肌肉损伤的循环指标。和8,并分析了肌肉损伤的标志物(肌酸激酶,乳酸脱氢酶和肌红蛋白)。两组的干预后5 km时间试验性能均显着受损(11±24 s,p <.01)。血浆肌酸激酶(227%±221%,p <.01),乳酸脱氢酶(18%±22%,p <.01)和肌红蛋白(72%±62%,p <.01)在整个星期逐渐增加两组之间无差异(p> .05)。总之,与等热量的碳水化合物摄入相比,在强化训练的一周内,摄入睡前蛋白质不会减少性能下降或改善肌肉损伤的循环指标。p <.01)。血浆肌酸激酶(227%±221%,p <.01),乳酸脱氢酶(18%±22%,p <.01)和肌红蛋白(72%±62%,p <.01)在整个星期逐渐增加两组之间无差异(p> .05)。总之,与等热量的碳水化合物摄入相比,在加强训练的一周内,摄入睡前蛋白质并不能减少性能下降或改善肌肉损伤的循环指标。p <.01)。血浆肌酸激酶(227%±221%,p <.01),乳酸脱氢酶(18%±22%,p <.01)和肌红蛋白(72%±62%,p <.01)在整个星期逐渐增加两组之间无差异(p> .05)。总之,与等热量的碳水化合物摄入相比,在强化训练的一周内,摄入睡前蛋白质不会减少性能下降或改善肌肉损伤的循环指标。
更新日期:2019-11-01
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