Simons-Morton B G, McKenzie T J, Stone E, Mitchell P, Osganian V, Strikmiller P K, Ehlinger S, Cribb P, Nader P R
National Institute of Child health and Human Development, Rockville, MD 20852, USA.
Am J Public Health. 1997 Jan;87(1):45-50. doi: 10.2105/ajph.87.1.45.
This research assessed the amount of daily physical activity in a multiethnic sample of US third-grade students.
Physical activity interviews were conducted with 2410 third graders from 96 schools in four states. Blood pressure, cholesterol, body mass index, timed run for distance, physical-activity self-efficacy, and perceived support for physical activity were also assessed.
Students reported a daily average of 89.9 minutes of moderate to vigorous physical activity, 34.7 minutes of vigorous activity, and 120.4 minutes of sedentary behavior; however, 36.6% obtained less than 60 minutes of moderate to vigorous physical activity daily, and 12.8% reported less than 30 minutes. Boys reported more physical and sedentary activity than girls; White children reported more activity than Black or Hispanic children; California children reported the most activity and Louisiana children the least. Geographic location, male gender, lower cholesterol, higher perceived efficacy in physical activity, and higher social support were associated with more physical activity.
Average reported activity met the Year 2000 objectives; however, many students reported less than recommended amounts of activity. These findings support the need for health promotion programs that increase the number of physically active children.
本研究评估了美国三年级学生多民族样本中的每日身体活动量。
对来自四个州96所学校的2410名三年级学生进行了身体活动访谈。还评估了血压、胆固醇、体重指数、定时跑距离、身体活动自我效能感以及对身体活动的感知支持。
学生报告的每日中等至剧烈身体活动平均时长为89.9分钟，剧烈活动时长为34.7分钟，久坐行为时长为120.4分钟；然而，36.6%的学生每日中等至剧烈身体活动时长不足60分钟，12.8%的学生报告不足30分钟。男孩报告的身体活动和久坐行为比女孩更多；白人儿童报告的活动比黑人或西班牙裔儿童更多；加利福尼亚州的儿童报告的活动最多，路易斯安那州的儿童最少。地理位置、男性性别、较低的胆固醇水平、较高的身体活动自我效能感以及较高的社会支持与更多的身体活动相关。
报告的平均活动量达到了2000年的目标；然而，许多学生报告的活动量低于推荐量。这些发现支持了开展健康促进项目以增加身体活跃儿童数量的必要性。
