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. 

-----------------------------------------------

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
airfoil drag
Ameretat
anonymous file transfer protocol
antichymotrysin
Ban Mung
Bancaine
bimetallic starter
bone-fires
booster unit
cat burglar
checked and adjusted capacity
chloroform-methanol
coil-sprung
combination pressure and velocity stage turbine
contusion
deflection of nasal septum
differential operation
doodied
Eitzum
error processing declaration
estoppel by equitable
estyrene
Etopophoso
exponential functions
export market growth
fancy leno
feeding canal
fighting materialism
fishy story
fixed point of temperature
fluorescent electrolyte
Fluorochloroxacillin
FPA clause
Fregata
fuel gauge adapter
fungi-formpapillae
genus sarcocephaluss
Grancher's triad
great-grandparents
grid intersection
growth hormone inhibiting hormone
Gynostemma cardiospermum
hazard-free
head bay of lock
high bypass ratio
high-altitude bombing
hydroiodination
International harbor
inverse analytic function
isobaric heterotope
istigobius decoratus
jigger operator
king dingalings
lack-land
lethe insana formosana
Maritime Law Suit Procedure
matinicus
mauritius pink borer of sugarcane
Mesemut Darat, Pulau
multiple-circuit winding
nonconductive
on the carpet
one's worse self
opportunity sampling
osra
outdevice
pack tilter
paleoclimatologists
pallet arbor
percent of water absorption
photoelectromagnetic (pem) effect
pienet
political opposition
polygonal circuit
popsical
postcodition
program development computer
rabindranath
razzberry
reform school
ring-liker
sclerosing lymphangitis
screw with straight-line
self-clamping churk
semistable law
sheet metal smoothing roll
Soussoum
spring rubber bushing
squirrel-cage induction motor
superautonomous
take up the thread
tanguile
Tante
telamones
thermally-tuned valve
TO him
tonka-bean
unimitated
van de graaf accelerator
walmgate
wellcut
Zaragozans