时间:2019-02-07 作者:英语课 分类:VOA标准英语2010年(七)月


英语课

A new study finds regular physical activity as a teenager may prevent cognitive 1 impairment - a decline in mental abilities - decades later.


Previous studies found that people who were physically 2 active in later life were more likely to avoid mental decline as they aged 3.


A study has linked exercise in teen years to better mental ability later in life


This new study asked more than 9,000 American women over age 65 about their level of physical activity as teenagers, and at ages 30, 50, and late in life.


"And what we found was that people who were physically active on a regular basis had lower risk of cognitive impairments in late life," said Laura Middleton, the Canadian researcher who led the study. "But it seemed that teenage physical activity was particularly important in terms of the prevention of cognitive impairments."


The women in the study who said they were physically active just once a week showed less cognitive impairment as measured by a standard test, but the link was strongest among those who were active decades earlier, as teenagers.


Middleton points to a couple of long-lasting effects that physical activity can have on still-growing teenage bodies. One is that exercise could help strengthen the blood vessels 4 in the head, which nourish the brain.


"Physical activity is also known to affect the repair mechanisms 5 in the brain. So people who are more physically active, who exercise, can actually improve the repair mechanisms in the brain," she says.


Interestingly, there was not a strong correlation 6 between the amount of physical activity and the extent of cognitive impairment.


The study involved women only, and speaking via Skype, Middleton said other studies that have looked at the relationship between exercise and cognitive decline found the link stronger in women. She added there is still a message in her research for men.


"Most studies have still found that physical activity is beneficial for men. And there's no reason to suggest that the finding that teenage physical activity is most important of the four ages shouldn't apply to men."


Dr. Laura Middleton reports her research in the Journal of the American Geriatrics Society.


 



adj.认知的,认识的,有感知的
  • As children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
adj.物质上,体格上,身体上,按自然规律
  • He was out of sorts physically,as well as disordered mentally.他浑身不舒服,心绪也很乱。
  • Every time I think about it I feel physically sick.一想起那件事我就感到极恶心。
adj.年老的,陈年的
  • He had put on weight and aged a little.他胖了,也老点了。
  • He is aged,but his memory is still good.他已年老,然而记忆力还好。
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人
  • The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
  • All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
n.机械( mechanism的名词复数 );机械装置;[生物学] 机制;机械作用
  • The research will provide direct insight into molecular mechanisms. 这项研究将使人能够直接地了解分子的机理。 来自《简明英汉词典》
  • He explained how the two mechanisms worked. 他解释这两台机械装置是如何工作的。 来自《简明英汉词典》
n.相互关系,相关,关连
  • The second group of measurements had a high correlation with the first.第二组测量数据与第一组高度相关。
  • A high correlation exists in America between education and economic position.教育和经济地位在美国有极密切的关系。
学英语单词
aggregative quantity index number
Albert Camus
anthracenetriol
arecaidine
Arrhenius complex
automated operator user exit routine
avaricelessness
basenji
basic repetition frequency
Bennettitales
biochanin A
biology classes
block-schollen movement
brush-carriage
burrlike
calamintha nepetas
carbide tool
carnaudmetalbox
chaulke
cissokho
close shearing
colonial expansion
constant market price
contractile disc
Convoluta
corneal transplants
Cryptotaenia
d'hondstraat
Decapoda
Deep Standby
duetts
engineering specifications
Euabelia
EXENAME
extensible discharge trough
Ficus simplicissima
field-ion emission
fraggle
frondosity
Gelderland
gerries
gold plating
Gran Pilastro(Hockfeiler)
grantiids
high germen
high lift valve
initial mass function (imf)
intaxable
intraphase temperature
Johnny Hoppers
kolleks
legislative statistics
longitudinal trim
make agreeable to
manual ateliosis
masua culture medium
Mehdi
meranoes
misinforms
Mlicrococcus bombycis
mutexing
nominal channel frequency
odontolithiasis
pain disorder
phase control factor
piniolate
pivot grammar
Pojuca
polarized filter
Poztykerës
precedence of symptoms over pulse manifestation
production trait
pryo-
pumped hydro storage
quital
radial density
re structuralization of trade
reality of life
rington
scrap-cake
send sb off
signal-receiving electrode
soft-ground
sperm donors
square delay pulse
sub-assembly
subsidiary documents
synchondrosis arycorniculata
to deposit
Torzhokskiy Rayon
Toulon-sur-Arroux
track condensation
Três Rios
two-shelled complex salt
two-way circuit
vegetable thremmatology
ventral lateral nucleus of thalamus
waterproof a vehicle
weeping beech
Where were you on Tuesday
with these words
x-ray sickness