运动前食中酸盐放大了在更年期后晚期的绝经后妇女体力功能的训练诱导的益处:一项随机试点研究
Stephen J Carter1,2, Tyler H Blechschmid1, Marissa N Baranauskas3
1Department of Kinesiology, School of Public Health-Bloomington, Indiana University, Bloomington, Indiana, United States.
概括
运动前甜菜汁 (BRJ) 与运动 (BRJ + EX) 结合,显著提高了绝经后妇女的身体功能. 这种组合比单独炼更能提高有氧能力和恢复,这表明BRJ可能会放大炼的益处.
科学领域:
- 运动生理学 运动生理学
- 营养生物化学 营养生物化学
- 老年学是一门学科.
背景情况:
- 与绝经前的女性和男性相比,更年期与减弱的运动适应性有关.
- 运动训练对于对抗与年龄相关的身体功能下降至关重要.
- 研究营养策略以增加绝经后妇女的运动益处是有必要的.
研究的目的:
- 为了确定运动前甜菜汁 (BRJ) 与运动 (BRJ + EX) 结合是否可以提高绝经后妇女的身体功能.
- 为了比较BRJ+EX与仅炼 (EX) 对身体功能指数的影响.
主要方法:
- 一项双臂试点研究,涉及24名绝经后妇女,接受了为期8周的基于电路的运动干预.
- 参与者被随机分配到BRJ + EX (在训练前120-180分钟消耗BRJ) 或EX.
- 使用6分钟步行测试 (6MWT),估计的VO2峰值,心率恢复 (HRR) 和最大膝盖伸展功率 (Pmax) 来评估身体功能.
主要成果:
- 与单独EX相比,BRJ + EX组在6MWT距离 (P=0.003),V̇o2peak (P=0.008) 和HRR (P=0.017) 中的改善显著更大.
- 效果大小有利于BRJ+EX的Pmax (d=0.83) 和V̇o2的动力学平均响应时间 (MRT) (d=0.50).
- BRJ + EX扩大了对身体功能,特别是有氧能力和恢复的适应性益处.
结论:
- 运动前的甜菜汁与运动训练相结合,似乎可以提高绝经后妇女的身体功能结果.
- BRJ + EX可以提供独特的好处,通过增加空气能力和恢复,而不仅仅是炼.
- 需要进一步的研究来阐明导致这些观察到的好处的潜在机制.
相关概念视频
01:16Antianginal Drugs: Nitrates and β-Blockers
543
In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
543
01:28Nitric Oxide Signaling Pathway
5.0K
Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
5.0K
01:20Exercise and Cardiovascular Response
746
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
746
01:17Exercise and Cardiac Output
943
Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be...
Sustained exercise increases the muscles' oxygen demand, which can be...
943
01:23Antihypertensive Drugs: Vasodilators
491
Vasodilators, primarily affecting the smooth muscles within arterial and venous walls, are commonly used for hypertension treatment. Medications such as minoxidil and hydralazine primarily target arteries and arterioles, while sodium nitroprusside acts on arterioles and venules. Minoxidil, functioning as a prodrug, is metabolized by hepatic sulfotransferase into its active form, minoxidil sulfate, after oral administration. This metabolite binds to the sulfonylurea receptor (SUR) component of...
491
01:27Exercise and Muscle Performance
1.4K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.4K