Kelder S H, Perry C L, Klepp K I
University of Texas Health Science Center, School of Public Health, Center for Health Promotion Research and Development, Houston 77225.
J Sch Health. 1993 May;63(5):218-23. doi: 10.1111/j.1746-1561.1993.tb06125.x.
The Class of 1989 Study, part of the Minnesota Heart Health Program (MHHP), involved a population-wide research and demonstration project to reduce cardiovascular disease in three intervention communities in the North-Central United States (1980-1993). Beginning in sixth grade (1983), seven annual waves of measurements were taken from students in one of the MHHP intervention communities and its matched pair (baseline N = 2,376). Self-reported data were collected at each time period describing a variety of health-related behavior, including hours of exercise engaged in per week and duration and intensity of regular physical activity. Using school as the unit of analysis, physical activity levels throughout most of the follow-up period were significantly higher in the intervention community for females. Males' average values were higher in the intervention community, but were largely statistically insignificant. Results suggest multiple intervention components such as behavioral education in schools and complementary community-wide strategies can produce lasting improvement in adolescent physical activity, particularly with female students.
1989届研究是明尼苏达心脏健康项目（MHHP）的一部分，它涉及一个全人群的研究与示范项目，旨在降低美国中北部三个干预社区的心血管疾病发生率（1980 - 1993年）。从六年级（1983年）开始，对MHHP其中一个干预社区及其匹配社区的学生进行了七次年度测量（基线样本量N = 2376）。在每个时间段收集自我报告数据，描述各种与健康相关的行为，包括每周锻炼的时长以及定期体育活动的持续时间和强度。以学校为分析单位，在大多数随访期间，干预社区中女性的身体活动水平显著更高。干预社区中男性的平均值更高，但在统计学上大多不显著。结果表明，诸如学校行为教育和社区层面的补充策略等多种干预措施可以使青少年的身体活动产生持久改善，尤其是对女学生而言。
