跨体育训练对运动员骨矿物质密度的影响
Petr Kutac1, David Kolodej2, Vaclav Bunc3
1Department of Human Movement Studies, University of Ostrava, Ostrava, Czech Republic - petr.kutac@osu.cz.
The Journal of sports medicine and physical fitness
|July 15, 2025
概括
高体积,长期的CrossFit训练显著改善中年男性的骨矿物质密度 (BMD). 休运动员没有显著增加骨质量,而竞争运动员则表现出实质性的增长,突出了训练强度和持续时间对骨健康的重要性.
科学领域:
- 运动生理学 运动生理学
- 骨的新陈代谢 骨的新陈代谢
- 运动科学 运动科学 运动科学
背景情况:
- 身体活动 (PA) 的下降需要探索可用于骨矿物质密度 (BMD) 的练习.
- 跨界健身 (CF) 可能为骨重塑提供刺激,可能有利于BMD.
- 现有的关于CF对骨硬化影响的研究不一致.
研究的目的:
- 调查不同CrossFit训练量对中年男性的BMD的影响.
- 为了比较不活跃的个人,娱乐性CrossFit运动员和竞争性CrossFit运动员之间的BMD.
主要方法:
- 对36名26至35岁的男性进行横截面研究,分为不活动 (G1),娱乐性CF (G2) 和竞争性CF (G3) 组.
- G2和G3参与者定期参加CF至少2年.
- 使用双能X射线吸收计 (DXA) 测量了BMD.
主要成果:
- 竞争式的CrossFit运动员 (G3) 比不活跃的个人 (G1) 和休运动员 (G2) 显示出明显更高的BMD.
- 休运动员 (G2) 比不活动的个人 (G1) 显示出更高的BMD,但这种差异在统计学上并不显著.
- 在G3和G1 (P<0.002) 和G3和G2 (P<0.048) 之间观察到显著的BMD差异,除了下肢比较.
结论:
- 扩展和高体积的CrossFit训练对BMD有积极的影响.
- 培训必须达到高体积和持续时间的门,才能产生显著的BMD益处.
- 结果与世卫组织对增强健康益处的PA建议一致.
相关概念视频
01:29Bone Disorders
4.0K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
4.0K
01:31Essential Minerals for Bone Health
4.4K
The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...
4.4K
01:18The Bone Matrix
4.5K
Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
4.5K
01:25Role of Vitamins in Maintaining Bone Health
3.7K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
3.7K
01:17Hormones and Bone Tissue
2.9K
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
2.9K
01:40Bone Remodeling
38.5K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
38.5K