首页
登录
职称英语
Fifty volunteers were alphabetically divided into two equal groups, Group A
Fifty volunteers were alphabetically divided into two equal groups, Group A
游客
2025-03-21
32
管理
问题
Fifty volunteers were alphabetically divided into two equal groups, Group A to participate in a 7 weeks exercise program, and Group B to avoid deliberate exercise of any sort during those 7 weeks. On the day before the exercise program began, all 50 men participated in a step-test. This consisted of stepping up and down on a 16-inch bench at 30 steps a minute for 5 minutes.
One minute after completion of the step-test, the pulse rate of each subject was taken and recorded. This served as the pretest for the experiment. For the next 7 weeks, subjects in the experimental group (Group A) rode an Exercycle (a motor-driven bicycle-type exercise machine) for 15 minutes each day. The exercise schedule called for riders to ride relaxed during the first day’s ride, merely holding on to the handle bars and foot pedals as the machine moved. Then, for the next 3 days, they rode relaxed for 50 seconds of each minute, and pushed, pulled, and pedaled actively for 10 seconds of each minute. The ratio of active riding was increased every few days, so that by the third week it was half of each minute, and by the seventh week the riders were performing 15 solid minutes of active riding.
At the end of the 7 weeks, the step-test was again given to both groups of subjects, and their pulses taken. The post-exercise pulse rates of subjects in the experimental group were found to have decreased an average of 30 heart beats per minute, with the lowest decrease 28 and the highest decrease 46. The pulse rates of subjects in the control group remained the same or changed no more than 4 beats, with an average difference between the initial and final tests of zero. [br] What did Group A do in their program?
选项
A、They stepped up and down on a bench each day.
B、They pushed and pulled on exercise handles every day.
C、They rode on an Exercycle every day.
D、They refrained from any exercise.
答案
C
解析
这同样是一道细节题。文中第一段第六句说:“在接下来的七周内,此次实验小组(小组A)的实验对象每天要在健身脚踏车上骑上15分钟。”故选项C正确。解答这一问题的关键是要结合文章的主题思想,确定出对两个实验小组的计划安排。
转载请注明原文地址:http://tihaiku.com/zcyy/4006708.html
相关试题推荐
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
Manysmallculturalgroupsliveinplacesfarawayfrommoderncities.Some
Thegroupswhoobjectedtothenewroadweretoldthatsinceworkhadalreadyst
Duringthefire,he______peopleintogroupswhichcarriedsandandwatertothro
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
Fiftyvolunteerswerealphabeticallydividedintotwoequalgroups,GroupA
随机试题
Duringthenormaldevelopmentofself,achildisaffectedbycertaininflue
OnDec.28,a2-year-oldgraywolfcrossedthestatelinefromOregon,beco
A.BusinessmanagerYouwillberesponsibleforourglobalbusinesswithins
路堤填前压实质量控制标准中,三级、四级公路,压实度应不小于()。A.70%
契约登记制度由法国首创,故又称“法国土地登记制度”,目前采用这种土地登记制度的国
公路隧道与一般铁路隧道、水工隧道、矿山地下巷道隧道相比,断面较大。
癥瘕久病体质较弱者,治宜A.理气行滞 B.健脾补肾 C.宜攻宜破 D.攻补
下列与香附调经止痛功效无关的药理作用是A.抑制子宫收缩B.抗炎C.镇痛D.雌性激
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
按存在的方式分类的计算机病毒是()。A、引导型病毒 B、良性病毒 C、恶性病
最新回复
(
0
)