相关实验视频
Updated: Jun 25, 2025

11:15
Determining the Contribution of the Energy Systems During Exercise
Published on: March 20, 2012
41.4K
能量可用性和碳水化合物摄入量的模式在女性运动员中区分了适应性和有问题的低能量可用性
Birna Vardardottir1, Sigridur Lara Gudmundsdottir1, Ellen Alma Tryggvadottir1
1Faculty of Health Promotion, Sport and Leisure Studies, University of Iceland, Reykjavik, Iceland.
Frontiers in sports and active living
|May 24, 2024
概括
低能量可用性 (LEA) 和低碳水化合物 (CHO) 摄入量的女性运动员经历了负面的健康影响. 保持足够的能量供应和CHO摄入量对于防止体育运动中的相对能量缺乏 (REDs) 至关重要.
科学领域:
- 运动营养 运动营养
- 运动生理学 运动生理学
- 女运动员健康 女运动员健康
背景情况:
- 运动中的相对能量不足 (REDs) 与有问题的低能量可用性 (EA) 有关.
- 随着低碳水化合物 (CHO) 的同时摄入,REDs的后果可能会恶化.
- 了解EA和CHO摄入模式对于女性运动员的健康至关重要.
研究的目的:
- 根据不同的EA和CHO摄入模式,对女性运动员的饮食摄入量,营养状况和REDs症状进行比较.
- 在REDs的背景下,研究能源可用性和碳水化合物消耗之间的相互作用.
- 为了确定特定的运动员群体在REDs更高的风险.
主要方法:
- 41名女运动员使用移动应用程序在7天内跟踪食物摄入和训练.
- 运动员被分为四组:充足的EA/CHO (SEA+SCHO),SEA/低的CHO (SEA+LCHO),低的EA/SCHO (LEA+SCHO) 和低的EA/LCHO (LEA+LCHO).
- 定义EA为≥30千卡/公斤FFM,LEA<30千卡/公斤FFM;SCHO≥3.0g/公斤,LCHO<3.0g/公斤.
主要成果:
- 36.6%的运动员是SEA+SCHO; 19.5%是LEA+LCHO,其中50%来自球运动.
- 审美和耐力运动员报告了更高的训练要求.
- 雷亚+莱科运动员报告睡眠和能量水平较差;两组雷亚运动员报告恢复较差,而SEA+SCHO运动员则较差.
结论:
- 重复出现的低能量的可用性和低碳水化合物摄入量与女性运动员的不良结果有关.
- 足够的能量供应和碳水化合物摄入是预防REDs的关键营养策略.
- 针对性的营养指导对于女性运动员来说至关重要,以减轻REDs的风险.
更多相关视频
相关概念视频
Anorexia Nervosa
59
Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
59
Energy Budgets
9.2K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
9.2K
Metabolic States of the Body: The Absorptive State
680
During the absorptive state, which lasts approximately four hours after a meal, the body absorbs nutrients from the gastrointestinal tract. The carbohydrates, proteins, and lipids we consume are broken down into monosaccharides, amino acids, and free fatty acids for absorption. While carbohydrates and proteins are absorbed as-is, lipids are absorbed in their broken-down forms and then re-esterified into triglycerides within enterocytes before being packaged into chylomicrons. These absorbed...
680
Metabolic States of the Body: Fasting and Starvation
1.3K
During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
1.3K
Metabolic States of the Body: The Postabsorptive State
300
The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
300
Carbohydrates: Dietary Sources and Requirements
461
Carbohydrates are predominantly obtained from plant sources. With the exception of lactose found in milk and insignificant glycogen amounts in meat, most consumed carbohydrates have plant origins. Monosaccharides and disaccharides, or sugars, can be sourced from fruits, honey, milk, sugar cane, and sugar beets. Grains and vegetables are rich in the polysaccharide starch. Two types of polysaccharides provide fiber: cellulose, which is abundant in many vegetables, forms undigestible roughage or...
461

