时间:2019-01-03 作者:英语课 分类:2018年VOA慢速英语(七)月


英语课

Swimming Is a Great All-body Workout


From VOA Learning English, this is the Health & Lifestyle Report.


When temperatures rise, many people swim to beat the heat. But swimming does a lot more than give relief from hot weather. It is a great workout for the whole body.


Health experts at the University of California, Berkeley write on their website Berkeley Wellness that swimming is "an ideal way to stay in shape."


Swimming is a high-cardio but low-impact exercise.


Cardiovascular exercise is often simply called "cardio." Cardio involves the heart, lungs, and circulatory system. The Berkeley experts say swimming is great for your cardiovascular system. It increases your heart rate and exercises your lungs without putting stress on the rest of your body.


Some high-cardio exercises, such as running, can improve your health but can also be hard on your body. Swimming, on the other hand, is so easy on the body that people often use it to heal from injuries.


A former competitive swimmer, Paul Waas, now coaches a team of swimmers. He says that swimming is easier on the body than other sports because it is low-impact. For this reason, it is a common exercise for people who are in rehabilitation 1 -- or “rehab,” for short.


"Well, swimming is a lifelong sport. It's a non-impact sport. And you know, it's horizontal rather than vertical 2. So, it's great for rehab from running injuries and things like that.”


A mother with two daughters on Coach Waas’s swim team agrees. Paloma says that for her girls swimming has been easier on the body than some other sports.


"So far, I think it's been good for their bodies. It's a lot of exercise, as you know. But it spares their knees, their joints 3, etc. But it's rare to get injured in swimming."


The coach adds that swimming is a great exercise for kids who grow a lot in a short amount of time. Again, here is Coach Waas.


“One of the things swimming is really good for is kids who go through really intense growth spurts 4. Their bones might be hurting and they're aching all the time. And then they get in the pool and, you know, they can float and stretch out a little bit and it relieves that as well.”


Swimming is also good for people with disabilities, or with chronic 5 conditions such as arthritis 6 and back pain. People who are overweight can find relief swimming. Their weightlessness in the water can help them to avoid injury as they exercise.


An all-body workout


As we said earlier, swimming is an all-body workout.


It works small muscle groups that often get ignored in other workouts. As you move in the water, many small muscle groups are working to help keep you balanced and upright.


There are some injuries


However, swimming is not without any risk of injury. Many types of swimming use repetitive arm movements. Over time, the repeated movement can cause shoulder and neck injuries. This is especially true if the stroke is not done correctly.


To reduce the chances of getting hurt, swimmers can use different kinds of movements in the water. For example, they can mix standard swimming strokes with running in water, treading water and other water exercises.


The researchers at University of California Berkeley warn that another downside to swimming and other water workouts is that they are not weight-bearing exercises. So, they do not help to strengthen bones.


To make sure your bones are getting the exercises they need, the researchers suggest combining swimming with a weight-bearing exercise. Common weight-bearing exercises are dancing, walking, running or jumping rope.


Paloma, the mother we heard from earlier, adds that she was concerned about this issue. Her oldest daughter, Pryia, has mostly been a swimmer. So, playing, what she calls a “terrestrial sport,” has helped give her daughter a good balance.


“This year our oldest daughter has done more, what I call ‘terrestrial sports’ – contact with the earth. And I think it’s been good for her to have the mix because she has only been a swimmer, primarily. And so you can be in swimmer shape but your muscles are not being challenged. So, it helps to really balance out. If you’re a basketball player all year, that’s not great for your body, but if you swim half the week and do other sports, I think that’s a good balance.”


But for many swimmers these downsides seem manageable when compared to the health benefits. Coach Waas agrees.


"You know, swimming can have some … some injuries from high repetition. But, in general, it's one of the safest and healthiest sports out there."


Besides the great workout you can get from swimming, Paloma brings up another important way it can help. It can help to keep you alive.


"My husband and I believe that swimming is a life skill. If it's a life and death situation, you can swim your way out of it. And as such, we really wanted them to be strong swimmers.”


Her daughter Pryia knows that swimming is good for her body. But perhaps the reason she likes to swims is more basic. It’s just fun.


"The water, of course, it keeps you cool while you're swimming. Also, you get a whole different way to use your muscles. And, overall, it's just fun to do because you get to stay in the water a lot."


And that’s the Health & Lifestyle report. I’m Anna Matteo.


Words in This Story


low-impact – adj. designed to provide exercise without being over-strenuous


vertical – adj. positioned up and down rather than from side to side : going straight up


horizontal – adj. positioned from side to side rather than up and down : parallel to the ground


spare – v. to prevent (someone or something) from experiencing or being affected 7 by something unpleasant, harmful, etc.


ache – v. to produce a dull continuous pain : to hurt in a way that is constant but not severe


relieve – v. to reduce or remove (something, such as pain or an unpleasant feeling)


stroke – n. one of a series of repeated movements of your arms in swimming or rowing that you make to move yourself or the boat through the water


terrestrial – adj. relating to or occurring on the earth


treading water – expression keeping the body nearly upright in the water and the head above water by a treading motion of the feet usually aided by the hands



n.康复,悔过自新,修复,复兴,复职,复位
  • He's booked himself into a rehabilitation clinic.他自己联系了一家康复诊所。
  • No one can really make me rehabilitation of injuries.已经没有人可以真正令我的伤康复了。
adj.垂直的,顶点的,纵向的;n.垂直物,垂直的位置
  • The northern side of the mountain is almost vertical.这座山的北坡几乎是垂直的。
  • Vertical air motions are not measured by this system.垂直气流的运动不用这种系统来测量。
接头( joint的名词复数 ); 关节; 公共场所(尤指价格低廉的饮食和娱乐场所) (非正式); 一块烤肉 (英式英语)
  • Expansion joints of various kinds are fitted on gas mains. 各种各样的伸缩接头被安装在煤气的总管道上了。
  • Expansion joints of various kinds are fitted on steam pipes. 各种各样的伸缩接头被安装在蒸气管道上了。
短暂而突然的活动或努力( spurt的名词复数 ); 突然奋起
  • Great spurts of gas shoot out of the sun. 太阳气体射出形成大爆发。
  • Spurts of warm rain blew fitfully against their faces. 阵阵温热的雨点拍打在他们脸上。
adj.(疾病)长期未愈的,慢性的;极坏的
  • Famine differs from chronic malnutrition.饥荒不同于慢性营养不良。
  • Chronic poisoning may lead to death from inanition.慢性中毒也可能由虚弱导致死亡。
n.关节炎
  • Rheumatoid arthritis has also been linked with the virus.风湿性关节炎也与这种病毒有关。
  • He spent three months in the hospital with acute rheumatic arthritis.他患急性风湿性关节炎,在医院住了三个月。
adj.不自然的,假装的
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
学英语单词
absorption (absorptive) water
adjustment residual
age of digital media
alpha fungus
analog value
assemble all data
bag elevator
bat-fowl
bertalanffy
Beverly Hills
body-snatcher
boundary spanning position
Cantabrians
cdlf
cellular ebonite
central length of gauge block
concentricness
converted quantities
copper rivet
Cypripedium calceolus
Darāyem
descender depth
diastereomeric excess
dislikeable
dovetail brick
dowle
drift stabilization
eranc
euchymous
financial taxonomy
fishhook stomach
flameproof joint
freep
freight agents
halophyte ecology
harwoods
heaps of time
immunotarget
inaccessible region
insertion class
insist on doing
irradiation reaction
ISAL (information system access lines)
jet deep-well pump
joint forming machine
klecktokens
laminated cover
lipid(e)
loanback
lugubris
mekul
melaleucic acid
melanostictus
microorchidia
militarise
Miyashita
neandertal men
neatherd
neolithics
network technology
odcs
oil impregnated capacitor
order-preserving mapping
orientine
over wash
pace method survey
packenham
Perutz reaction
pitched turbine type agitator
PRIONOPIDAE
product stock
prokaryosis
pyrosol
quatresin
recto-urethral muscle
residual infiltration
rewets
rough and fine tap changer
ruler guides
scarphed
schegloff
secret plans
shotwell
single address code
sisal rope
steering lock lever
steering master controller
superfluous ornamentation
supplementary-fired steam generator
target history
terzano
the balloon goes up
thread one's way
three-ten
Tresten
Trunnion Mounted Ball Valve
type of barrier
unauthorized construction
vittandly
whitcrosses
Wierzbowski