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X Demographics
Mendeley readers
Attention Score in Context
| Title |
BDNF mediates improvements in executive function following a 1-year exercise intervention
|
|---|---|
| Published in |
Frontiers in Human Neuroscience, December 2014
|
| DOI | 10.3389/fnhum.2014.00985 |
| Pubmed ID | |
| Authors |
Regina L. Leckie, Lauren E. Oberlin, Michelle W. Voss, Ruchika S. Prakash, Amanda Szabo-Reed, Laura Chaddock-Heyman, Siobhan M. Phillips, Neha P. Gothe, Emily Mailey, Victoria J. Vieira-Potter, Stephen A. Martin, Brandt D. Pence, Mingkuan Lin, Raja Parasuraman, Pamela M. Greenwood, Karl J. Fryxell, Jeffrey A. Woods, Edward McAuley, Arthur F. Kramer, Kirk I. Erickson |
| Abstract |
Executive function declines with age, but engaging in aerobic exercise may attenuate decline. One mechanism by which aerobic exercise may preserve executive function is through the up-regulation of brain-derived neurotropic factor (BDNF), which also declines with age. The present study examined BDNF as a mediator of the effects of a 1-year walking intervention on executive function in 90 older adults (mean age = 66.82). Participants were randomized to a stretching and toning control group or a moderate intensity walking intervention group. BDNF serum levels and performance on a task-switching paradigm were collected at baseline and follow-up. We found that age moderated the effect of intervention group on changes in BDNF levels, with those in the highest age quartile showing the greatest increase in BDNF after 1-year of moderate intensity walking exercise (p = 0.036). The mediation analyses revealed that BDNF mediated the effect of the intervention on task-switch accuracy, but did so as a function of age, such that exercise-induced changes in BDNF mediated the effect of exercise on task-switch performance only for individuals over the age of 71. These results demonstrate that both age and BDNF serum levels are important factors to consider when investigating the mechanisms by which exercise interventions influence cognitive outcomes, particularly in elderly populations. |
X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 18% |
| Japan | 1 | 9% |
| Unknown | 8 | 73% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 10 | 91% |
| Scientists | 1 | 9% |
Mendeley readers
The data shown below were compiled from readership statistics for 433 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 3 | <1% |
| Switzerland | 1 | <1% |
| Sweden | 1 | <1% |
| Netherlands | 1 | <1% |
| Taiwan | 1 | <1% |
| Poland | 1 | <1% |
| Unknown | 425 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 69 | 16% |
| Student > Master | 55 | 13% |
| Researcher | 44 | 10% |
| Student > Bachelor | 40 | 9% |
| Student > Doctoral Student | 37 | 9% |
| Other | 80 | 18% |
| Unknown | 108 | 25% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 79 | 18% |
| Medicine and Dentistry | 51 | 12% |
| Neuroscience | 49 | 11% |
| Sports and Recreations | 48 | 11% |
| Agricultural and Biological Sciences | 19 | 4% |
| Other | 62 | 14% |
| Unknown | 125 | 29% |
Attention Score in Context
This research output has an Altmetric Attention Score of 22. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 November 2022.
All research outputs
#1,773,210
of 26,362,953 outputs
Outputs from Frontiers in Human Neuroscience
#799
of 7,818 outputs
Outputs of similar age
#22,849
of 372,222 outputs
Outputs of similar age from Frontiers in Human Neuroscience
#27
of 188 outputs
Altmetric has tracked 26,362,953 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 93rd percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 7,818 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 15.3. This one has done well, scoring higher than 89% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 372,222 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 93% of its contemporaries.
We're also able to compare this research output to 188 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 85% of its contemporaries.