Though many of the benefits of intense
exercise have long been known, a new study has found one more. A new
study by McMaster University posted in the “Journal
of Cognitive Neuroscience”
suggests that short bouts of intense exercise can improve
high-interference memory. This new finding may have great benefits
for those suffering with dementia, and other cognitive function
issues.
In the study each of the 95 young adult
were placed in one of three groups exercise only group, exercise and
cognitive training group, and the control group which neither
exercised or mentally trained. The test took place over a 6 week
period, each day the two exercise groups would participate in brief
intense periods of intense exercise.
Both the exercise, and
exercise/cognitive training group showed improvements in their
high-interference memory performance, and no difference was noted in
the control group. Though there was no noticeable improvement in
overall memory performance, high-interference memory, which is
associated with the hippocampus was noticed.
Some participants were found to have
better results than others. These “high responders” also showed
an increased benefit in the exercise/cognitive training group,
whereas most participants in both exercise groups showed similar
results. The high responders were found to have increased
brain-derived neurotrophic factor (BDNF), which is a protein that
supports performance, growth and survival of brain cells.
"Improvements in this type of memory from exercise might help to
explain the previously established link between aerobic exercise and
better academic performance," says Jennifer Heisz, lead author
of the study.
Studies on older participants have been
planned to discover if the same benefits can be found in elderly
participants.
"One hypothesis is that we will see greater benefits for older
adults given that this type of memory declines with age," says
Heisz. "However, the availability of neurotrophic factors also
declines with age and this may mean that we do not get the
synergistic effects."
References:
Heisz, J. J., Clark, I. B., Bonin, K.,
Paolucci, E. M., Michalski, B., Becker, S., & Fahnestock, M.
(2017). The Effects of Physical Exercise and Cognitive Training on
Memory and Neurotrophic Factors. Journal of Cognitive
Neuroscience, 29(11), 1895-1907. doi:10.1162/jocn_a_01164
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