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科学与认知:动动大脑就能强身健体 背后的科学原理

科学与认知:动动大脑就能强身健体 背后的科学原理

BBC
Tuesday, November 23, 2021 6:28 PM GMT

研究发现,运动心像能帮助强身健体、改善肌肉功能,甚至有助于伤后康复。但这是如何做到的呢?

如果坐在沙发上,仅用意念的力量就可以强身健体该有多好?

听起来好到令人难以置信,但有证据显示,我们确实可以在无需动用任何肌肉的情况下提高身体机能。

研究发现,运动心像(也称动作心像,motor imagery)学是一种能够真正奏效的技巧。一些顶尖运动员已经在训练过程中已经使用这一技巧,普通人也可以尝试。它能帮助强身健体、改善肌肉功能,甚至有助于伤后康复。

BBC科学节目主持人迈克尔·莫斯利医生(Michael Mosley)在播客《就一件事》中仔细研究了这项令人难以置信的技术背后的科学,并请专家介绍了尝试小贴士。

想象帮你获得体育成功

最新研究表明,对运动员来说,如果能把运动心像与身体锻炼结合起来,效果比单纯的身体锻炼要更好。这意味着更可能会成为更优秀或者更强壮的运动健将。

简而言之,要在大脑中想象出一种体验。为了确保有效性,可以用视觉想象运动的步骤和节奏。如果是以达标性为主的运动项目,还需要想象能达到的最终结果。

这种可视化的好处在1899年得到首次证明。自那时起,已经在一系列活动中被证明有效:从英式橄榄球到网球,它甚至可以帮助跑得更快。

但通过思想能改进的不仅是技巧,许多人还想更强壮。比如,初学者可能会认为举重会很难,这时,运动心像学就会派上用场,因为它实际上已经被证明可以改善肌肉力量。

意念帮你强身壮体

用意念改善力量的想法来自于1990年代的一些研究。在其中一项研究中,美国路易斯安那州立大学的研究人员让一组女性想象伸展膝盖和收缩股四头肌的动作,每次持续5秒钟。

研究人员特别强调参加者不要真正收缩股四头肌,只是想象而已。在研究结束时,她们的肌肉力量增加了12.6%,非常可观,尽管没有证据显示她们的肌肉体积更大了。

这究竟是为什么呢?莫斯利医生请教了认知心理学家奥谢博士(Dr Helen O'Shea)。

“心胜于物”?

奥谢博士说,“说到运动心像,它其实是一个认知技巧 - 你可能不会期待(它能带来)力量增加这样的结果,但是我们开始研究这一领域后发现,运动心像不仅可以改善运动技能,实际上还改变了大脑以及生理机能的运作方式。”

Read full story on BBC
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