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相关概念视频

Exercise and Cardiac Output01:17

Exercise and Cardiac Output

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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...
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Exercise and Muscle Performance01:27

Exercise and Muscle Performance

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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...
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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...
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相关实验视频

Updated: Mar 17, 2026

Physical Activity Measurement in Children Accepting Table Tennis Training
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在奥林匹克四年期间体育活动的进展

James F Sallis1, Fiona Bull2, Regina Guthold3

  • 1Department of Family Medicine and Public Health, University of California, San Diego, CA, USA.

Lancet (London, England)
|August 1, 2016
PubMed
概括

身体不活动仍然是一个全球性流行病, 更多的研究和政策实施至关重要,特别是在低收入和中等收入国家 (LMIC).

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Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
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科学领域:

  • 公共卫生
  • 全球健康
  • 流行病学

背景情况:

  • 2012年第一期"柳叶刀"杂志宣布身体不活动是全球流行病, 需要采取紧急公共卫生行动.
  • 在全球监测身体不活动方面取得了显著进展,
  • 新兴研究将身体不活动与全球大约3.8%的痴呆病例联系在一起,强调其对大脑健康的影响.

研究的目的:

  • 总结自2012年"柳叶刀"系列以来的身体活动和不活动方面的进展.
  • 审查监测,研究,干预和政策实施方面的进展.
  • 确定未来努力的关键挑战和领域,特别是在低收入和中等收入国家 (LMIC).

主要方法:

  • 审查身体活动监测和研究的进展.
  • 对干预研究的分析,重点是LMIC.
  • 评估国家体育活动政策及其实施情况.

主要成果:

  • 全球对身体不活动的监测增加,但几乎没有证据表明患病率有所改善.
  • 身体不活动与全球3.8%的痴呆病例有关.
  • 城市与农村人口的体力不活动率较高,这是城市化带来的越来越严重的问题.
  • 初步证据表明,社区干预在LMIC可能是有效的.
  • 虽然大多数国家都有政策,但只有不到60%的国家已经实施了这些政策,这表明实施的障碍很大.

结论:

  • 尽管在监测和研究方面取得了一些进展,但在全球范围内增加体育活动仍需要大量努力.
  • 解决政策实施障碍对于实现有意义的变化至关重要.
  • 加强监督,研究,干预能力和政策实施至关重要,特别关注最不发达国家和地区.