Stephens M B, Wentz S W
Primary Care Group, San Diego, USA.
Fam Med. 1998 Mar;30(3):220-3.
The physical activity levels of US children are declining. Opportunities for physical activity within city schools are constrained by time and space limits. This study determined whether a supplemental program of physical activity would significantly alter the fitness levels of low-income, minority, urban elementary schoolchildren.
Ninety-nine students from two Cleveland Public Schools served as subjects. One school received a 15-week intervention program where teams of two medical students met with urban elementary schoolchildren three times a week for physical activity sessions. The other school served as a control and received no supplemental activity other than a regularly scheduled physical education class held once a week. We obtained field measurements of skinfold thickness, heart rate response to submaximal exercise, and sit and reach flexibility.
The supplemental activity group showed significant improvements in flexibility, body composition, and heart rate response to submaximal exercise.
This investigation indicates that a program of fitness activities conducted within the classroom can significantly improve levels of fitness in urban elementary schoolchildren.
美国儿童的身体活动水平正在下降。城市学校内的身体活动机会受到时间和空间限制。本研究确定了一项补充身体活动计划是否会显著改变低收入、少数族裔城市小学生的健康水平。
来自克利夫兰两所公立学校的99名学生作为研究对象。其中一所学校接受了为期15周的干预计划，两名医学生组成的小组每周与城市小学生进行三次体育活动。另一所学校作为对照，除了每周一次的常规体育课之外，没有接受其他补充活动。我们获取了皮褶厚度、次最大运动心率反应以及坐位体前屈柔韧性的现场测量数据。
补充活动组在柔韧性、身体成分以及次最大运动心率反应方面有显著改善。
本调查表明，在教室内开展的健身活动计划可显著提高城市小学生的健康水平。
