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研究发现即使是少量的运动也能极大地增加大脑的体积_我的网站

一 |     Fox和同事在研究中利用了莱茵兰研究的信息，这是一项由DZNE在德国波恩附近进行的基于人口的大型研究。他们特别研究了2550名30至94岁之间的人的身体活动数据，以及通过磁共振成像（MRI）获得的大脑图像。    

    Alberto Blanco Silva, Cuban Ambassador to China, gives opening remarks at the commemoration in Beijing on August 13, 2026. Photo: Dong Feng/GTThe Embassy of the Republic of Cuba in China hosted a commemorating session in Beijing on August 13 to mark the centennial of the birth of the historical leader of the Cuban Revolution Fidel Castro Ruz. The event is not only about remembering an individual leader, but revisiting a decades-old relationship. 
Delegates' speeches evaluated Fidel's role in promoting Cuba-China ties, especially when Cuba became the first Latin American and Caribbean country to establish diplomatic relations with China.
Alberto Blanco Silva, Cuban Ambassador to China, said in his opening remarks that the revolutionary leader is a figure whose influence transcends borders, time, generations, and ideologies.
Blanco noted that Fidel's life was devoted to Cuba's independence, social justice, solidarity among people, Latin American and Caribbean integration, and Global South, the socialist cause, and a more just and equitable international order. 
Ambassador Blanco said that from Fidel, "we learned to practice solidarity through deeds, not merely beautiful words; to remain steadfast in the face of adversity and prudent in victory." For decades, Fidel's voice was echoed among developing countries, Blanco said, adding that Fidel promoted transformations that changed the course of Cuba's history. 
Blanco also regarded Fidel as a statesman with a universal vision. Recalling the South Summit held in Havana, Cuba, in 2000, Ambassador Blanco quoted Fidel, saying "Globalization is an objective reality, which reveals our conditions as passengers abroad the same vessel - this planet inhabited by us all."
With this metaphor, Fidel illustrated the urgent need to unite global efforts as an international community to save the planet and humanity, preserve the future of our children, and reduce the gap between the North and the South, Blanco continued. 
The Cuban Ambassador also noted Fidel's personal attention to China-Cuba relations. 
Fidel, on behalf of the historic leadership, took the initiative, during a mass rally on September 2, 1960, to consult the people and announce the sovereign decision to establish diplomatic relations with the Government of the People's Republic of China, making Cuba the first country in the Western Hemisphere to dare take that step, the ambassador said, switching his speech from Spanish to Chinese. 
Blanco added that it was Fidel who, with great frankness and courage, addressed the issue of the exclusion of the People's Republic of China and its admission to the United Nations in his speech before the United Nations on September 26, 1960. 
Fidel also consistently upheld the one-China principle and, through his speeches and reflections, condemned interference in China's internal affairs and attempts to undermine the territorial integrity and sovereignty of the People's Republic of China. At the same time, Fidel helped foster mutual interest between Latin America and the Caribbean and China. 
Moreover, Fidel instructed that the book, The Long March, an account of a great military feat by Red Army in 1930s whose 90th anniversary we are commemorating this year, be published. Fidel knew its history in great detail and regarded it as an inexhaustible source of inspiration, Blanco recalled.
From Blanco's view, Fidel has helped forge a bond that today stands as an example of cooperation between a large country and a small one, based on equality and mutual respect. 
The diplomat said that today, the joint construction of a China-Cuba community with a shared future is an expression of the high-level of strategic trust achieved between "our countries and opens new opportunities to expand cooperation for the benefit of both our peoples." 
"One hundred years after his birth, Fidel Castro remains present in the memory of all those who are grateful to him and all those who defend just causes, both within and beyond Cuba," Blanco concluded.
One of the reasons why Fidel is still relevant today is that while people commemorate him, they are also reaffirming the value of the bilateral friendship, which Fidel forged and helped strengthen. 
    Ma Hui, Vice-minister of the International Department of the CPC Central Committee, gives a speech at the session in Beijing on August 13, 2026. Photo: Dong Feng/GT Ma Hui, Vice-minister of the International Department of the CPC Central Committee, said in his speech that Fidel was a founder of the Communist Party of Cuba and the socialist cause, and made significant contributions to Cuba's national independence and to international fairness and justice.
Ma served as Chinese Ambassador to Cuba from 2021 to 2024. 
Ma said he visited on numerous occasions the Fidel Castro Center, which is located not far from the Chinese Embassy, as well as museums that feature Fidel. 
"The more I learned about Comrade Fidel Castro, the more I was captivated by his noble character, outstanding qualities, and personal charisma," said Ma. 
Fidel visited China twice and warmly received several Chinese leaders on their visits to Cuba, making historic contributions to the development of China-Cuba relations. The Chinese people will never forget him, Ma said. 
In the current complex and evolving international landscape, China firmly supports Cuba in exploring a path of socialist development suited to its national conditions, firmly supports Cuba in safeguarding national sovereignty and security and opposing foreign interference, and stands ready to work together with Cuba and the wider international community to jointly uphold international fairness and justice, Ma stressed.
。参与研究的人在他们的大腿上部佩戴了一个加速度计七天，以收集他们的身体活动数据。

二 | 磁共振成像扫描显示了新的细节，特别是大脑体积和大脑皮层的厚度。活动越多，效果越大"观察结果能够表明，体育活动对几乎所有被调查的大脑区域都有明显的影响。一般来说，我们可以说，体育活动越多、越激烈，大脑区域就越大，无论是体积还是皮质厚度，"Fox总结了研究结果。"特别是，我们在海马体观察到这一点，海马体被认为是记忆的控制中心。较大的脑容量比较小的脑容量能提供更好的保护，防止神经变性"。然而，大脑区域的大小并不随着体力活动而线性增加。比较那些久坐的研究参与者和那些只是适度运动的人，研究小组发现最大的、几乎是突然的体积增加，这在70岁以上的老年人中尤其明显。"这是一个非常好的消息--特别是对于那些不愿意运动的人，"Ahmad Aziz说，他是DZNE"人口和临床神经流行病学"研究小组的负责人。

三 | "我们的研究结果表明，即使是很小的行为改变，如每天步行15分钟或走楼梯而不是乘电梯，也可能对大脑产生实质性的积极影响，并可能抵消与年龄有关的脑物质损失和神经退行性疾病的发展。特别是老年人已经可以从适度增加低强度的体育活动中获益"。通常从事中度至高强度体育活动的年轻和有点运动天赋的受试者也有相对较高的脑容量。然而，在更加活跃的受试者中，这些大脑区域稍大。

四 | 这里还显示：越活跃，效果越大，尽管在高水平的体育活动中，有益的效果趋于平缓。受益最大的大脑区域为了确定从体育活动中受益最多的大脑区域的特征，研究小组在数据库中搜索了在这些大脑区域特别活跃的基因。Fox说："主要是这些基因对线粒体的运作至关重要，线粒体是我们细胞的动力装置。这意味着在这些大脑区域有特别多的线粒体。线粒体为我们的身体提供能量，为此它们需要大量的氧气。与其他脑区相比，这需要增加血流量。在体育活动期间，这一点得到了特别好的保证，这可以解释为什么这些大脑区域从运动中受益。"运动保护生物信息学分析进一步显示，其表达受体育活动影响的基因与那些受神经退行性疾病（如阿尔茨海默氏症、帕金森氏症或亨廷顿氏症）影响的基因之间有很大的重叠。研究小组总结说，这可能为体育活动具有神经保护作用的原因提供一个潜在的解释。Aziz说："通过我们的研究，我们能够以前所未有的详细程度来描述从体育活动中受益的大脑区域。我们希望我们的结果将为进一步的研究提供重要线索。"研究人员希望进一步推动更多的体育活动--促进大脑健康和预防神经退行性疾病。"即使是适度的体育活动也会有帮助。因此，这只是一个小小的努力--但却有很大的影响"。

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Published on:10:58:07