Think that improving your memory is all brain training and omega-3 supplements? Think again. A new study from researchers at Georgia Institute of Technology in Atlanta suggests that working out at the gym for as little as 20 minutes can improve long-term memory.
Previous studies have shown that memory may be improved by several months of aerobic exercises, such as running, cycling or swimming. However, the findings of the new study - published in the journal Acta Psychologica - demonstrate that a similar memory boost can be achieved in a much shorter period.
"Our study indicates that people don't have to dedicate large amounts of time to give their brain a
boost," says Lisa Weinberg, the Georgia Tech graduate student who led the project.
As well as looking at aerobic exercise, Weinberg's team also examined how resistance exercise - weightlifting, push-ups and sit-ups - might affect memory.
The team recruited 46 participants (29 women and 17 men), who were randomly assigned into two groups. For the first part of the experiment, all participants viewed a series of 90 images on a computer screen.
These images were split evenly been photographs that had been classed "positive," "neutral," and "negative." These ranged from pictures of children playing on a waterslide, to photographs of clocks, to images of mutilated bodies. The participants were asked to try and remember as many of them as they could.
Next, the participants were randomized into "active" and "passive" groups and seated at leg extension resistance exercise machines.
The active group were told to extend and contract each leg 50 times, at their personal maximum effort. The passive group were told to simply sit in the chair and allow the machine to move their legs.
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