 "Researchers say 30 minutes of exercise improves memory, enhance cognitive performance")
In new research, scientists have suggested that those who start their day with exercise or brisk walking also improve their memory and cognitive performance.
In a study, conducted by University College London, the researchers suggested that 30 minutes of moderate to vigorous activity and at least six hours of sleep at night can lead to improved cognitive performance the next day.
“The takeaway is just [that] physical activity is good for your brain and good sleep helps that,” said Dr Mikaela Bloomberg, who is first author of the study.
As per the researchers, physical activity has earlier been associated with a reduced risk of dementia and short-term improvements in cognitive function.
However, as stated by Bloomberg, many studies which look at short-term impacts were based on laboratory and had tracked responses on a timescale of minutes to hours.
As per these studies, physical activities can also lead to increased blood flow to the brain and cause stimulation of chemicals which are known as neurotransmitters.
In the new study, researchers have observed the short-term impact of physical activity which is carried out in real life and not found how it benefits the brain but also revealed that its impact last longer than expected.
Here’s how scientists carried out the study
In the International Journal of Behavioral Nutrition and Physical Activity, Bloomberg and her colleagues reported how 76 adults – aged between 50-83 years old and not suffering from cognitive impairment or dementia – were made to wear an accelerometer for eight days to track their physical activity and sleep as they continued with their normal life.
Every day, participants were made to go through simple online cognitive tests to probe their processing speed, memory and attention, among other faculties.
According to the team, the results revealed that every 30-minute increase in physical activity corresponded to a 2 to 5 per cent increase in working and episodic memory scores the next day.
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Bloomberg said that the next step is carrying out similar tests in people with cognitive impairments.
“The idea is for people who have mild cognitive impairment, a very minor boost in cognitive performance on a day-to-day basis can make a huge difference,” she added.
The study is focused on how human brains can be protected as we age.
“We all experience cognitive decline as we get older, it’s a normal part of ageing,” said Bloomberg.
“So that’s the age group where we start to think: what are these little things we can do on a day-to-day basis to improve our cognitive function and our independence and social participation?” he added.
(With inputs from agencies)
