摘要
本文采用踏阶法（阶梯高度０．４ｍ，踏阶速度２２．５ｓｔｅｐ／ｍｉｎ）测定了４０名平原男性青年长期暴露海拔３７００ｍ高原过程中心功能适应指数的改变，并与海拔３７００ｍ高原移居一年和世居男性青年水平进行了比较。结果提示：平原人移居海拔３６００ｍ高原３个月后心脏功能恢复到平原水平和同于世居者水平，心功能适应指数可用于急性暴露高原人体心脏功能和劳动能力的评价。
he fitness idexes of cardic function(FICF)was
measured in 40 young men during prolonged(4 monthes)stay at altitude
of 3 700m which were compared with the values of subjects exposedto
the same altitude for 1 year and of high altitude native while they
steped on a 40cm stair at afrequency of 22.5 step/min for 3 min.The
results showed that on the 3 rd day after exposure to3700m,the FICF
was decreased by 10.3%as compared with the value of sea
level(P<0.01).Onthe 7th、14th、30th and 60th days after arrival at 3
700m,the FICF remained unchanged as com-pared with the value of 3rd
day after exposure to 3 700m(P>0.05)and were yet lower than thatof
sea level (P<0.01).However,the FICF at 90th day after arrival at 3
700m returned to thevalue of sea level and was similar to those of
subject exposed to 3 700m for 1 year and the samealtitude
natives(P>0.05).Furthermore,it was found that the FICF on the 3rd day
after expo-sure to 3 700m was negatively correlated with the value of
sea level(r=-0.539,P<0.01).Thus,the cardiovascularly more fit
subjects tend to suffer a larger decrement in the FICF.The re-sults
suggested that the FICF decreased markedly after exposure to 3 700m
altitude and would re-turn to sea level value on the 90th day after
arrival at 3 700m.In addition,FICF might be applica-ble to the
evaluation of physical work capacity after acute exposure to altitude
of 3 700m.
出处
《高原医学杂志》
CAS
1995年第1期1-3,共3页
Journal of High Altitude Medicine
关键词
高原
踏阶运动
心功能适应指数
altitude
step test
fitness idexes of cardiac
function
