Abstract:
:Physical activity may help to prevent or delay brain atrophy. Numerous studies have shown associations between physical activity and age-related changes in the brain. However, most of these studies involved self-reported physical activity, not objectively measured physical activity. Therefore, the aim of this study was to examine the association between objectively measured physical activity, as determined using accelerometers, and brain magnetic resonance imaging (MRI) measures in older adults with mild cognitive impairment (MCI). We analyzed 323 older subjects with MCI (mean age 71.4 years) who were recruited from the participants of the Obu Study of Health Promotion for the Elderly. We recorded demographic data and measured physical activity using a tri-axial accelerometer. Physical activity was classified as light-intensity physical activity (LPA) or moderate-to-vigorous physical activity (MVPA). Brain atrophy and the severity of white matter lesions (WML) were determined by MRI. Low levels of LPA and MVPA were associated with severe WML. Subjects with severe WML were older, had lower mobility, and had greater brain atrophy than subjects with mild WML (all P<0.05). Multivariate analysis revealed that more MVPA was associated with less brain atrophy, even after adjustment for WML (β=-0.126, P=0.015), but LPA was not (β=-0.102, P=0.136). Our study revealed that objectively measured physical activity, especially MVPA, was associated with brain atrophy in MCI subjects, even after adjusting for WML. These findings support the hypothesis that physical activity plays a crucial role in maintaining brain health.
journal_name
Exp Gerontoljournal_title
Experimental gerontologyauthors
Doi T,Makizako H,Shimada H,Tsutsumimoto K,Hotta R,Nakakubo S,Park H,Suzuki Tdoi
10.1016/j.exger.2014.12.011subject
Has Abstractpub_date
2015-02-01 00:00:00pages
1-6eissn
0531-5565issn
1873-6815pii
S0531-5565(14)00358-1journal_volume
62pub_type
杂志文章abstract::In this study, spontaneous multiple unit activity (MUA, action potentials derived simultaneously from a number of neurons in a given brain region) was recorded through electrodes chronically implanted in the parietal cerebral cortex of the rats of 1, 3, 6, 9, 12, and 26 months of age (cross-sectional study). Electroph...
journal_title:Experimental gerontology
pub_type: 杂志文章
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journal_title:Experimental gerontology
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journal_title:Experimental gerontology
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pub_type: 杂志文章
doi:10.1016/0531-5565(87)90048-9
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journal_title:Experimental gerontology
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更新日期:2014-01-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章,评审
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更新日期:1992-09-01 00:00:00
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doi:10.1016/j.exger.2016.03.015
更新日期:2016-06-15 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2013.02.003
更新日期:2013-10-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
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journal_title:Experimental gerontology
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journal_title:Experimental gerontology
pub_type: 杂志文章
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更新日期:2001-08-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2005.06.006
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journal_title:Experimental gerontology
pub_type: 杂志文章,评审
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/0531-5565(89)90030-2
更新日期:1989-01-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/s0531-5565(97)00113-7
更新日期:1998-05-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/s0531-5565(03)00211-0
更新日期:2003-10-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/0531-5565(89)90022-3
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2004.12.002
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/0531-5565(91)90073-u
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journal_title:Experimental gerontology
pub_type: 杂志文章,评审
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2010.10.004
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2013.06.008
更新日期:2013-09-01 00:00:00
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/0531-5565(88)90007-1
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journal_title:Experimental gerontology
pub_type: 杂志文章,评审
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journal_title:Experimental gerontology
pub_type: 杂志文章
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journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/0531-5565(82)90043-2
更新日期:1982-01-01 00:00:00
abstract::Dietary restriction (DR) has multiple and essential effects in protecting against DNA damage in model organisms. Persistent DNA damage plays a central role in the process of aging. Senescence-associated secretory phenotype (SASP), as a product of cellular aging, can accelerate the process of cellular senescence as a f...
journal_title:Experimental gerontology
pub_type: 杂志文章
doi:10.1016/j.exger.2017.09.005
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