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Estimated Sweat Loss, Fluid and Carbohydrate Intake, and Sodium Balance of Male Major Junior, AHL, and NHL Players During On-Ice Practices.
International Journal of Sport Nutrition and Exercise Metabolism ( IF 3.0 ) Pub Date : 2019-11-01 , DOI: 10.1123/ijsnem.2019-0029
Alexander S D Gamble 1 , Jessica L Bigg 1 , Tyler F Vermeulen 1 , Stephanie M Boville 1 , Greg S Eskedjian 1 , Sebastian Jannas-Vela 2 , Jamie Whitfield 3 , Matthew S Palmer 4 , Lawrence L Spriet 1
Affiliation  

Several previous studies have reported performance decrements in team sport athletes who dehydrated approximately 1.5-2% of their body mass (BM) through sweating. This study measured on-ice sweat loss, fluid intake, sodium balance, and carbohydrate (CHO) intake of 77 major junior (JR; 19 ± 1 years), 60 American Hockey League (AHL; 24 ± 4 years), and 77 National Hockey League (NHL; 27 ± 5 years) players. Sweat loss was calculated from pre- to post-exercise BM plus fluid intake minus urine loss. AHL (2.03 ± 0.62 L/hr) and NHL (2.02 ± 0.74 L/hr) players had higher sweat rates (p < .05) than JR players (1.63 ± 0.58 L/hr). AHL (1.23 ± 0.69%; p = .006) and NHL (1.29% ± 0.63%; p < .001) players had ∼30% greater BM losses than JR players (0.89% ± 0.57%). There was no difference in fluid intake between groups (p > .05). Sodium deficits (sodium loss - intake) were greater (p < .05) in AHL (1.68 ± 0.74 g/hr) and NHL (1.56 ± 0.84 g/hr) players compared with JR players (1.01 ± 0.50 g/hr). CHO intake was similar between groups (14-20 g CHO/hr), with 29%, 32%, and 40% of JR, AHL, and NHL players consuming no CHO, respectively. In summary, sweat rates were high in all players, but the majority of players (74/77, 54/60, and 68/77 of JR, AHL, and NHL, respectively) avoided mild dehydration (>2% BM) during 60 min of practice. However, ∼15%, 41%, and 48% of the JR, AHL, and NHL players, respectively, may have reached mild dehydration and increased risk of performance decrements in a 90-min practice.

中文翻译:

冰上训练期间男性主要青少年、AHL 和 NHL 运动员的估计出汗量、液体和碳水化合物摄入量以及钠平衡。

之前的几项研究报告了团队运动运动员的表现下降,他们因出汗而脱水了大约 1.5-2% 的体重 (BM)。本研究测量了 77 名大三学生(JR;19 ± 1 岁)、60 名美国冰球联盟(AHL;24 ± 4 岁)和 77 名美国国家冰球运动员的冰上汗水流失、液体摄入量、钠平衡和碳水化合物 (CHO) 摄入量。曲棍球联盟(NHL;27±5 岁)球员。出汗量的计算是从运动前到运动后的 BM 加上液体摄入量减去尿量。AHL (2.03 ± 0.62 L/hr) 和 NHL (2.02 ± 0.74 L/hr) 球员的出汗率 (p < .05) 高于 JR 球员 (1.63 ± 0.58 L/hr)。AHL (1.23 ± 0.69%; p = .006) 和 NHL (1.29% ± 0.63%; p < .001) 球员的 BM 损失比 JR 球员 (0.89% ± 0.57%) 高约 30%。组间液体摄入量没有差异(p > .05)。与 JR 球员 (1.01 ± 0.50 g/hr) 相比,AHL (1.68 ± 0.74 g/hr) 和 NHL (1.56 ± 0.84 g/hr) 球员的钠缺乏(钠损失 - 摄入量)更大(p < .05)。各组之间的 CHO 摄入量相似(14-20 克 CHO/小时),分别有 29%、32% 和 40% 的 JR、AHL 和 NHL 球员不摄入 CHO。总之,所有球员的出汗率都很高,但大多数球员(分别为 JR、AHL 和 NHL 的 74/77、54/60 和 68/77)在 60 岁期间避免了轻度脱水(>2% BM)练习分钟。然而,在 90 分钟的练习中,分别有约 15%、41% 和 48% 的 JR、AHL 和 NHL 球员可能已经达到轻度脱水并增加了表现下降的风险。各组之间的 CHO 摄入量相似(14-20 克 CHO/小时),分别有 29%、32% 和 40% 的 JR、AHL 和 NHL 球员不摄入 CHO。总之,所有球员的出汗率都很高,但大多数球员(分别为 JR、AHL 和 NHL 的 74/77、54/60 和 68/77)在 60 岁期间避免了轻度脱水(>2% BM)练习分钟。然而,在 90 分钟的练习中,分别有约 15%、41% 和 48% 的 JR、AHL 和 NHL 球员可能已经达到轻度脱水并增加了表现下降的风险。各组之间的 CHO 摄入量相似(14-20 克 CHO/小时),分别有 29%、32% 和 40% 的 JR、AHL 和 NHL 球员不摄入 CHO。总之,所有球员的出汗率都很高,但大多数球员(分别为 JR、AHL 和 NHL 的 74/77、54/60 和 68/77)在 60 岁期间避免了轻度脱水(>2% BM)练习分钟。然而,在 90 分钟的练习中,分别有约 15%、41% 和 48% 的 JR、AHL 和 NHL 球员可能已经达到轻度脱水并增加了表现下降的风险。
更新日期:2019-11-01
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