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Exercising during learning improves vocabulary acquisition

#1
If you're going to be lazy and just do rote learning, at least get some exercise to enhance it. ;p

Exercising during learning improves vocabulary acquisition: Behavioral and ERP evidence

Abstract: Numerous studies have provided evidence that physical activity promotes cortical plasticity in the adult brain and in turn facilitates learning. However, until now, the effect of simultaneous physical activity (e.g. bicycling) on learning performance has not been investigated systematically. The current study aims at clarifying whether simultaneous motor activity influences verbal learning compared to learning in a physically passive situation. Therefore the learning behavior of 12 healthy subjects (4 male, 19–33 years) was monitored over a period of 3 weeks. During that time, behavioral and electrophysiological responses to memorized materials were measured. We found a larger N400 effect and better performance in vocabulary tests when subjects were physically active during the encoding phase. Thus, our data indicate that simultaneous physical activity during vocabulary learning facilitates memorization of new items.

Here's a couple bits from the methodology and discussion: “Within the 3 weeks, participants were asked to learn 80 French words (40 nouns and 40 verbs). Participants underwent 3 individual trainings sessions per week resulting in 9 learning sessions in total. Each learning session lasted 30 min during which participants listened to the 80 words twice. Thus, all 80 vocabulary pairs were presented in French–German order before they were presented again in German–French order. Within the French–German and the German–French block the order of vocabulary pairs was randomized for each learning session. Within the 3 weeks of training participants listened each item 18 times in total...

In the Spinning group participants were instructed to cycle in synchrony to vocabulary presentation. This was possible when subjects cycled at a speed of 60 rounds per minute (RPM), a pace that is usually recommended to beginners in fitness centres... Participants were instructed to exercise at a medium exertion level, i.e., they should breathe a little faster and feel a little warmer...

... Members of the Spinning group showed significantly better performance in the vocabulary tests at each testing day. Furthermore they showed a larger N400 effect as compared to those participants who learned vocabulary in the physically passive condition.

The current results are very promising given the fact that a positive influence of simultaneous physical activity on learning has never been demonstrated before. Although previous studies provided evidence for a beneficial effect of high-intensity physical activity on the subsequent learning outcome, it has never been systematically investigated whether simultaneous physical activity further pushes or hinders mnemonic functions. Here, we provide first evidence that simultaneous physical activity positively influences the memorization of new vocabulary, a result that goes hand in hand with plasticity changes as evidenced in an enhanced N400 amplitude compared to the control group.”

Related: High impact running improves vocabulary learning

Abstract: Regular physical exercise improves cognitive functions and lowers the risk for age-related cognitive decline. Since little is known about the nature and the timing of the underlying mechanisms, we probed whether exercise also has immediate beneficial effects on cognition. Learning performance was assessed directly after high impact anaerobic sprints, low impact aerobic running, or a period of rest in 27 healthy subjects in a randomized cross-over design. Dependent variables comprised learning speed as well as immediate (1 week) and long-term (>8 months) overall success in acquiring a novel vocabulary. Peripheral levels of brain-derived neurotrophic factor (BDNF) and catecholamines (dopamine, epinephrine, norepinephrine) were assessed prior to and after the interventions as well as after learning. We found that vocabulary learning was 20 percent faster after intense physical exercise as compared to the other two conditions. This condition also elicited the strongest increases in BDNF and catecholamine levels. More sustained BDNF levels during learning after intense exercise were related to better short-term learning success, whereas absolute dopamine and epinephrine levels were related to better intermediate (dopamine) and long-term (epinephrine) retentions of the novel vocabulary. Thus, BDNF and two of the catecholamines seem to be mediators by which physical exercise improves learning.

Some bits from the methodology and discussion: “Using a cross-over design, every subject took part in three conditions on different days, spaced at least 1 week apart (see Fig. 1). The conditions differed with regard to the intensity of physical activity. The condition “relaxed” served as a control and consisted of 15 min being sedentary. The condition “moderate” consisted of 40 min of low impact running at a fixed individual heart rate. The individual target heart rate was based on the results of the initial physical fitness test and ensured that lactate levels remained below 2 mmol/l (aerobic condition). In the condition “intense”, subjects performed two sprints of 3 min each, separated by a 2 min break. Each sprint started at 8 km/h, increased every 10 s by 2 km/h, until exhaustion. This was an anaerobic condition with lactate levels greater than 10 mmol/l...

The main finding of the present study was that intense exercise directly improves learning: After two sprints of less than 3 min each, subjects learned 20 percent faster compared to moderate exercise or being sedentary. To our knowledge, this is the first study of immediate exercise-induced effects on a complex learning task with a parallel analysis of neurophysiological correlates (changes in peripheral catecholamine or BDNF levels) in humans.”
Edited: 2011-06-13, 11:49 am
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#2
Awesome nest0r, thanks for sharing this. I'm gonna have to see if I can work this into my study and gym routines.
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#3
This is actually part of a larger phenomenon with the brain that has to do with a more general link between thinking and physical activity. They did a similar study to this with PTSD victims having trouble processing very painful memories, and they had them walk around a track with their therapist. The patients showed marked improvements in their ability to verbalize and work through various aspects of their trauma.

They were eventually able to localize the mechanism in the PTSD case and it had to do with the way your eyes twitch(saccade) when you're doing a physical activity. They were able to replicate the experience without the walking in a lab by instructing patients to focus on certain lights in succession while undergoing similar therapy to the walking patients.

I have no doubt that the eye thing here is what's responsible for the improvement in vocab acquisition. I would like to see longer-term studies done in order to make sure these people don't eventually fall victim to state-dependent learning where they do noticeably poorly in situations where they are not in the same physical state they were in when they learned the words.
Edited: 2011-06-13, 11:58 am
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#4
"We found that vocabulary learning was 20 percent faster after intense physical exercise as compared to the other two conditions"
Wow, this is something worth thinking about.

I'm usually running 8km in 60 minutes during some mornings. In the end of those 60 minutes I'm usually very very exhausted. Hmm, I wonder if this would this mean that I should run faster and less...I didn't read the text so carefully though Big Grin
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#5
Does this effect wear off while I shower off or do you have to hit the books right after?
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#6
kitakitsune Wrote:Does this effect wear off while I shower off or do you have to hit the books right after?
The associative learning trials (which is what the second linked study uses and where the learning speed difference was demonstrated for intense sessions) began 15 minutes after. ;p (The transfer test was immediately after these.)
Edited: 2011-06-13, 12:46 pm
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#7
nest0r Wrote:
kitakitsune Wrote:Does this effect wear off while I shower off or do you have to hit the books right after?
The associative learning trials (which is what the second linked study uses and where the learning speed difference was demonstrated for intense sessions) began 15 minutes after. ;p (The transfer test was immediately after these.)
So basically you can shower and have enough rest so that you're not so tired anymore.
Big Grin I was already questioning that -> "you're damn tired, lazy and muzzy after running and your learning ability improves?"
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#8
Ha, that's a cool finding. I wonder if it's the endorphins, or increased oxygen supply to the brain.
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#9
vosmiura Wrote:Ha, that's a cool finding. I wonder if it's the endorphins, or increased oxygen supply to the brain.
Maybe it's oxygen that has an effect on endorphins, which affect signals.
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#10
Despite being out of the age range of test subjects, I'd say that the effect is present, too, in teenagers.

The feeling of intensified physical and mental concentration I have after a swim or jog could be applied to Japanese. I would have a hard time integrating exercise into a study method though, as for me the effect wears off in about 30 minutes and I start to feel sleepy.
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#11
While I'm at it, I found this. Worth posting since I swear by Omega-3 pills.

Docosahexaenoic acid dietary supplementation enhances the effects of exercise on synaptic plasticity and cognition

Abstract: Omega-3 fatty acids (i.e. docosahexaenoic acid; DHA), similar to exercise, improve cognitive function, promote neuroplasticity, and protect against neurological lesion. In this study, we investigated a possible synergistic action between DHA dietary supplementation and voluntary exercise on modulating synaptic plasticity and cognition. Rats received DHA dietary supplementation (1.25% DHA) with or without voluntary exercise for 12 days. We found that the DHA-enriched diet significantly increased spatial learning ability, and these effects were enhanced by exercise. The DHA-enriched diet increased levels of pro–brain-derived neurotrophic factor (BDNF) and mature BDNF, whereas the additional application of exercise boosted the levels of both. Furthermore, the levels of the activated forms of CREB and synapsin I were incremented by the DHA-enriched diet with greater elevation by the concurrent application of exercise. While the DHA diet reduced hippocampal oxidized protein levels, a combination of a DHA diet and exercise resulted in a greater reduction rate. The levels of activated forms of hippocampal Akt and CaMKII were increased by the DHA-enriched diet, and with even greater elevation by a combination of diet and exercise. Akt and CaMKII signaling are crucial step by which BDNF exerts its action on synaptic plasticity and learning and memory. These results indicate that the DHA diet enhanced the effects of exercise on cognition and BDNF-related synaptic plasticity, a capacity that may be used to promote mental health and reduce risk of neurological disorders.
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#12
nest0r Wrote:While I'm at it, I found this. Worth posting since I swear by Omega-3 pills.

Docosahexaenoic acid dietary supplementation enhances the effects of exercise on synaptic plasticity and cognition

Abstract: Omega-3 fatty acids (i.e. docosahexaenoic acid; DHA), similar to exercise, improve cognitive function, promote neuroplasticity, and protect against neurological lesion. In this study, we investigated a possible synergistic action between DHA dietary supplementation and voluntary exercise on modulating synaptic plasticity and cognition. Rats received DHA dietary supplementation (1.25% DHA) with or without voluntary exercise for 12 days. We found that the DHA-enriched diet significantly increased spatial learning ability, and these effects were enhanced by exercise. The DHA-enriched diet increased levels of pro–brain-derived neurotrophic factor (BDNF) and mature BDNF, whereas the additional application of exercise boosted the levels of both. Furthermore, the levels of the activated forms of CREB and synapsin I were incremented by the DHA-enriched diet with greater elevation by the concurrent application of exercise. While the DHA diet reduced hippocampal oxidized protein levels, a combination of a DHA diet and exercise resulted in a greater reduction rate. The levels of activated forms of hippocampal Akt and CaMKII were increased by the DHA-enriched diet, and with even greater elevation by a combination of diet and exercise. Akt and CaMKII signaling are crucial step by which BDNF exerts its action on synaptic plasticity and learning and memory. These results indicate that the DHA diet enhanced the effects of exercise on cognition and BDNF-related synaptic plasticity, a capacity that may be used to promote mental health and reduce risk of neurological disorders.
Actually I disagree, similar studies have been done with the elderly and it showed there was no improvement in cognitive function or ability to concentrate. There were also studies done on children that indicated there was no signifcant difference between groups taking extra fatty acids and those who didn't. Mind you these trials included actual humans, not rodents. Not all results obtained from animals can be extrapolated to include humans. Also you should not underestimate the lobby behind these dietary supplements, people that consume a normal balanced diet will have no added benefit from taking extra omega 3, on the contrary the fish that the oil is extracted from often contain heavy metals, as do the supplements.

Edit: since you have a propensity to bomb people with obscure abstracts and studies here is an example of a study I was talking about, performed on human beings: http://www.ncbi.nlm.nih.gov/pubmed/21531481. Omega 3 does seem to improve visual acuity but has no cognitive benefits.
Edited: 2011-06-14, 12:02 pm
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