时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

 Is heading in soccer dangerous? It's a question that has met its fair share of controversy 1.   If you've never played soccer, heading may look pretty dangerous to the poor brain. Where else in life do you not want to duck away from an object flying straight at your head? However, soccer players know that there is a proper way to head the ball. Yes, there is a technique to meeting a flying ball with your head. And Dr. Frank Webbe, a former soccer referee 2 and coach who is also a psychologist specializing in sports psychology 3, says there is good reason to believe that with proper technique, a player's risk for brain injury is low. The problem is that in a fast-paced game of soccer obstacles sometimes prevent a player from heading with good technique. And that's when problems are likely to arise.


Webbe and collaborators tested soccer players in neurocognitive performance such as attention, concentration, and speed of thinking. They compared long-time soccer players to novices 4, as well as moderate-to-frequent headers to less than moderate headers. In addition, they tested people who had played soccer recently as well as people who hadn't played in some time. The results suggested that more frequent headers are at more risk for brain injury than less frequent headers. As a group, frequent headers performed lower on cognition tests in the week after a game of frequent heading than did other subjects. Also, players with the highest lifetime estimates of heading scored lowest overall on these cognition tests. The results convince Webbe that heading does indeed pose a threat to brain function and that more research needs to be done.  

n.争论,辩论,争吵
  • That is a fact beyond controversy.那是一个无可争论的事实。
  • We ran the risk of becoming the butt of every controversy.我们要冒使自己在所有的纷争中都成为众矢之的的风险。
n.裁判员.仲裁人,代表人,鉴定人
  • The team was left raging at the referee's decision.队员们对裁判员的裁决感到非常气愤。
  • The referee blew a whistle at the end of the game.裁判在比赛结束时吹响了哨子。
n.心理,心理学,心理状态
  • She has a background in child psychology.她受过儿童心理学的教育。
  • He studied philosophy and psychology at Cambridge.他在剑桥大学学习哲学和心理学。
n.新手( novice的名词复数 );初学修士(或修女);(修会等的)初学生;尚未赢过大赛的赛马
  • The Russians are such novices in Africa. 在非洲的俄国人简直都是些毫无经验的生手。 来自辞典例句
  • Where the primary track all novices, screams everywhere, ha ha good terror. 那里的初级道上全是生手,到处都是尖叫声,哈哈好恐怖的。 来自互联网
学英语单词
air guitarists
AJA, A.J.A.
alyssa
ammonium ceric nitrate
Anglicity
anxiety state
applanata
axoaxonic
Bekesbourne
bog-roll
brezhnevism
Broad-Church
bromine trifuloride
Bromus remotiflorus
catoblepas
cement column
cephalopholis aurantia
cepstrum analysis
close operation
coaxial mount
coldcocking
concentrated radioactive liquid wastes
condenser start motor
Continental Celtic
craven
denitrifies
e-rail
epinephrin(e) hydrochoride
etheric acid
family sphaerobolaceaes
flood basin
Folin-Macallum's method
free vibration test
gamabufotalin
geostationary earth orbit
hyltons
illuminating gas
industrial X-ray radiographic equipment
inlaid wood
ion-cyclotron
junction amelodental
Kobuleti
lavelled
leadless colour
legendous
lets-out
lever for adjusting
liberalized
load oil
long induction loop
low impact
migratory cyclone
molek
mottu
Mulegé
Munster
naikis
newsweeks
non-destructive detector
non-sense
off-balance sheet financing
overspeed braking electro-magnetic valve
panorama view
paravanes
PDLA
Pervomayskiy
phase sampling pulse
plasma tail of comet
portable equipment
prescripted
primitive ovum
respublika
ribbon work
Richardia brasiliensis
root-canal reamer
seine rivers
self-expansion
shaft-packing leakage
slide-rule general
small-size coal mine
steel shape
sterilization by radiation
stress relaxation time
substantives
subtitles
sunken poop
Sutura sphenofrontalis
swinging root
Swycer
table handling
theory of reflection and cognitive analysis
toggle-lever grip gear
trefa
underground stem
vertical transform
visual quality
vito
voltage dependent resistivity
wave trace
wave-formed mouth
width-diameter ratio
yolk envelope