top | item 20251122

30 Minutes of Aerobic Exercise Supercharges Semantic Memory

91 points| laurex | 6 years ago |psychologytoday.com | reply

18 comments

order
[+] mettamage|6 years ago|reply
I've learned this fact in my neuropsychology class from Prof. Dr. Erik Scherder. He is nowadays semi-famous in The Netherlands even and spreads this message as loud and as far as he can.

The thing that annoys me about research like this is: it may be true, but I don't feel it. So to what extent is it really helpful?

That is until I had an accidental yet natural experiment that lasted for two weeks.

For two weeks I cycled every odd day to my work and I went to my work by metro every even day. It happened to rain every even day (and sometimes I decided to go cycling anyway on odd days, despite it raining).

At some point, after about a week, I started noticing upon reflection that I felt much better at work whenever I cycled. This reflection wasn't planned, I simply wondered why I felt not as horrible as I usually do in similar circumstances -- I was severely sleep deprived when I was reflecting on this. Since I wasn't purposefully conducting an experiment and this wasn't on my mind, I figured this showed the true strength of the effect. The second week I started zooming in on this difference and really noticed it well.

I estimate that I was about 20% cognitively more performant and 20% more emotionally stable. It didn't matter whether I had sever sleep deprivation or not. It always felt like I was about 20% better.

So, if you want to experience it yourself. Cycle on odd days (for about 20-30 minutes) and go to the metro on even days. Within 2 weeks you should have noticed a difference.

[+] Mirioron|6 years ago|reply
>The thing that annoys me about research like this is: it may be true, but I don't feel it. So to what extent is it really helpful?

I think another important question with research like this is: "does it affect everyone?" Something can be statistically significant over the population, but that doesn't mean every individual in the population has that specific effect, but I do expect an effect like this to be near universal.

[+] cvolzer3|6 years ago|reply
I observed a similar impact in performance during undergrad and developed a routine around the impact.

I work a mentally intense 5hr stretch in the morning then take a 2hr break to have lunch, exercise, and shower.

By the time I return to work, I'm completely refreshed and able to put in another 5hr stretch at peak performance levels.

[+] MobileVet|6 years ago|reply
I started working out over lunch 2 years ago. I still hate actually working out but I use Netflix while on the elliptical so I get through it.

This has completely removed the 2:00 lull that used to come after eating a meal at lunch. I still eat after the workout but it doesn’t knock me out when it is being digested.

I absolutely see improvements in cognitive abilities that afternoon versus not working out.

[+] dorchadas|6 years ago|reply
> I still hate actually working out but I use Netflix while on the elliptical so I get through it.

Before I started running outdoors with a training program I actually like (not C25k) I would always take my Kindle to the gym and read while I walked at an angle on the treadmill or biked. Found I could easily go for hours this way. It's quite a bit of a motivator.

[+] freetime2|6 years ago|reply
Often when work (or life in general) gets stressful, I’ll skip my daily workout routine. This is a good reminder of just how counterproductive that is. At the very least I should be able to get out for a 30 minute walk every day.
[+] stringfood|6 years ago|reply
There is an old Buddhist quote

"Set aside 30 minutes a day to meditate, unless you are extremly stressed or busy in which case set aside an hour"

[+] clumsysmurf|6 years ago|reply
Where I live in the US desert southwest, the air is often foul from Ozone (summer, afternoons) or particulates (monsoons, winter, business as usual). I always wonder, if its worth exercising or not, or whats the optimal amount of exercise given a certain amount of pollution.
[+] 0xcde4c3db|6 years ago|reply
Hard to gauge. Air pollution has definitely been shown to blunt some benefits of exercise, but I don't think we're at a point where anyone is even close to having the numbers to sum up the overall effect.
[+] bthallplz|6 years ago|reply
> For this study, Smith and his UMB colleagues used fMRI neuroimaging to monitor the brain activity of study participants (ages, 55-85) and their ability to perform a memory task that involved identifying famous names on two separate days

Should we expect these results to accord with the experience of people younger than 55-85?

[+] keyle|6 years ago|reply
This is interesting but how was this not wildly known already? I feel I've read plenty of articles summing up the same idea. Pumping more oxygen leads to better performance throughout the entire body?
[+] EForEndeavour|6 years ago|reply
The goal of studies like these is to convert common knowledge into scientific knowledge. It does make sense directionally, but it's still worth rigorously studying it.
[+] blunte|6 years ago|reply
Mix this with the studies that show individual and couple benefits from regular sex, and I think we have a lot of motivation to "exercise" for 30+ minutes a few times per week.
[+] blunte|6 years ago|reply
During periods where I regularly exercise, I find that I eat healthier (and on a more normal schedule). The diet improvement probably provides mental benefits as well.