神经科学与心理学2020journals.plos.org
跳舞在促进大脑可塑性方面优于重复性体育锻炼(2018)
Dance is superior to repetitive physical exercise for brain plasticity (2018)
入门 · 约 45 分钟读完前置知识:神经科学基础、BDNF 与神经可塑性概念
导读
这项 2018 年发表于 PLOS ONE 的研究比较了舞蹈训练与重复性健身锻炼对老年人大脑可塑性的影响。结果显示,相比常规健身,舞蹈使更多脑区(扣带回、岛叶、胼胝体、感觉运动皮层)体积增加,且只有舞蹈组血浆 BDNF 水平上升;但两组在注意力和空间记忆上的认知改善并无显著组间差异。
HN 关注点:'舞蹈是否比普通锻炼更健脑'这一结论,讨论焦点在于研究实际测到的是脑结构变化而非认知提升,效果解释存在过度乐观之嫌。
HN 评论精选
这几条评论里:质疑 1 补充 2 亲历 1
质疑质疑研究结论:实测的认知收益并不存在,所谓'以后会显现'只是作者的乐观推测
让我翻译一下:他们看到的是容易测量的指标有所改善,希望这能转化为认知能力提升,但实际上并没有,于是他们寄希望于'以后会体现出来'。(顺便说:我是活跃的 Lindy Hop 舞者——疫情前是——我热爱跳舞,很期待能再去舞会。)
hannob查看英文原文
Looking at this: "Dancing compared to conventional fitness activity led to larger volume increases in more brain areas, including the cingulate cortex, insula, corpus callosum and sensorimotor cortex. Only dancing was associated with an increase in plasma BDNF levels. Regarding cognition, both groups improved in attention and spatial memory, but no significant group differences emerged. The latter finding may indicate that cognitive benefits may develop later and after structural brain changes have taken place." May I translate: They saw improvements in things they could easily measure. They hope this translate into improved cognitive ability. But it actually didn't. But they still hope it'll do that later. (FWIW: I'm an active Lindy Hop dancer - ok, I have been before covid... - I love dancing and I am really looking forward to when I can visit dance festivals again.)
亲历以 30 年舞者经验描述舞蹈的独特性:全身协调的'无声乐器',不同于一般运动
我跳了 30 年舞,涉猎多种舞种。向非舞者描述跳舞最好的方式是:它像在演奏一件无声的、可穿戴的乐器,需要你整个身体的专注。它不像体育运动——除非你是竞技性的。
networkimprov查看英文原文
I've been a dancer for 30 years, of many forms. The best way I can describe dancing to non-practitioners is that it's like playing a silent, wearable musical instrument that demands attention from your entire body. It is not like playing a sport, except perhaps if you do it competitively :-)
补充推论:对环境变化要求高反应的户外运动可能比舞蹈更有效
如果论文假设的机制成立且是连续作用的,那么不难推想:需要对外界不断变化的环境做出高度反应的高强度户外运动(滑雪、山地骑行、攀岩、冲浪、白水皮划艇等)可能比跳舞效果更好。
skookum查看英文原文
If the postulated basis is correct and acts on a continuum, it wouldn't be a huge leap to think that doing physically challenging outdoor sports that require a high degree of reaction to constantly-changing surroundings would be even better than dancing. Sounds like a case for skiing, mountain biking, climbing, surfing, whitewater kayaking, etc.
补充认为关键在于身体活动与社会协调的结合,而非舞蹈本身
这在我看来是常识。研究中的舞蹈不只是身体运动,还要跟上群体动作,需要读懂'群体'的位置并给个体差异留出空间。我好奇一个体力要求较低但同样需要群体协调的活动是否有类似效果。我怀疑身体性与社会协调的结合才是关键——我们既是大脑也是身体,忽视任何一方长期都不健康。
aeturnum查看英文原文
This feels like common sense to me. The dance they describe isn't just physical movement, it's also staying within a group movement which requires both reading where "the group" is and giving space to individual differences. Obviously the focus here is on exercise but I would be curious if a less physically demanding but similarly grouped activity would have similar effects on brain function. I suspect that linking physicality and social coordination is key. We are both brains and bodies and neglecting either is unhealthy in the long term.
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