时间:2019-01-13 作者:英语课 分类:2006年VOA标准英语(三月)


英语课

By Carol Pearson
Washington, DC
23 March 2006
 
watch Women Heart report
 
  
  
People often associate sudden bursts of exercise with a dramatically increased risk of heart attack, especially for sedentary middle-aged 1 adults.  But a new study published in the Journal of the American Medical Association shows this perception is wrong. 

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In the northern hemisphere each winter, doctors issue warnings. They say shoveling wet, heavy snow can lead to a heart attack, especially for men who are not used to exercise. Doctors also warn middle-aged, out-of-shape patients about trying to get fit too fast.

The reason: it is believed a sudden burst of exercise, for those who are not used to it, increases the risk of heart attack and death. That said, a new study at Brigham and Women's Hospital in Boston, Massachusetts, shows the risk, though real, is very small. 
 

Dr. Christine Albert  
  
Dr. Christine Albert and other researchers tracked the health and exercise habits of 120,000 middle-aged women for 24 years.  Their findings surprised them. "The risk was only one sudden cardiac death per 36.5 million person hours spent exercising," said Dr. Alpert.

"In our study, the women who were not previously 2 exercising, but then did exercise -- that was out of the ordinary for them -- acute bursts of exercise, were at a slightly elevated risk of having sudden cardiac death while they exercised."

  
  
Women who exercised four or more hours a week reduced this very small risk by 60 percent.

Furthermore, the research showed the risk was much lower for women than for men. 

In an earlier study on men, Dr. Albert and her colleagues found men were 19 times more likely to have a heart attack than were women under similar circumstances, although the risk was still small.

The study showed that exercise helps reduce overall risk of heart attack for both women and men.  And even though the risk for heart attack for both sexes is small for sudden bursts of exercise, it is still better to start slowly and gradually increase the intensity 3.

Footage courtesy of The Journal of The American Medical Association



adj.中年的
  • I noticed two middle-aged passengers.我注意到两个中年乘客。
  • The new skin balm was welcome by middle-aged women.这种新护肤香膏受到了中年妇女的欢迎。
adv.以前,先前(地)
  • The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • Let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
n.强烈,剧烈;强度;烈度
  • I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
  • The strike is growing in intensity.罢工日益加剧。
学英语单词
accompushments
amplitude ratio-phase difference instrument
anisamide
antigedades
backbar
bashing on
bearing indication
beauvallon
boiling-water
Brevibloc
camp sheeting
candle stick
card reeler
CEW
clearing of accounts
client priority
communistled
compeed
compression of light pulse
couseranite
data flow
Dexasine
disgraciously
disprisoning
Dixonian
eat right
ecbasis
entraining plume
equity share
facultative anaerobes
family therapeutics
febris rubra
floating channel
flotation column
flys
fucko
fund remittance and transfer
gangrenous stomatitis
germylidenes
gingival separator
high energy level pile
hour-hand
human skin
impulsive neurosis
indeprehensible
indifferent air mass
insurance-relateds
intragastrically
Inverness capes
jolliment
k homogeneous grammar
kawamoto
Khvosh Maqām
lagopodous
landing over obstacle
leveraged contract in foreign exchange
Machupicchu
make sail
marine seepage
mechanical friction
midflow
nephometer
Nitropotasse
non-scene
nonlinear deformation
not good enough to
nucleolform
oletimol
ottey
P-anisidine value
phlordzinize
Ponchon-Savarit diagram
Pontchartrain, L.
precisionists
radio sensor
real-value item
recessing-tool
reduction cell
reverting
rotating cylinder (pneumatic)
sandcloth
Sap-flow
sclerospora miscanthi
scorner
secondary focusing
sell for
semi-direct fired pulverizing system
SI batch file service
snipe fish
South Whittier
stealthie
stock base
subapical initial
thomisidae
tire-pressure gauge
towell
twisting(cleland 1949)
Upper Voltans
water-sop
winter moth
XRE
zappily