Tomlin Dona, Naylor P J, McKay Heather, Zorzi Alexandra, Mitchell Marc, Panagiotopoulos Constadina
School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, Canada.
Int J Circumpolar Health. 2012 Mar 19;71:17999. doi: 10.3402/ijch.v71i0.17999.
The aim of the study was to determine the short-term impact of a 7-month whole-school physical activity and healthy eating intervention (Action Schools! BC) over the 2007-2008 school year for children and youth in 3 remote First Nations villages in northwestern British Columbia.
A pre-experimental pre/post design was conducted with 148 children and youth (77 males, 71 females; age 12.5±2.2 yrs).
We evaluated changes in obesity (body mass index [wt/ht(2)] and waist circumference z-scores: zBMI and zWC), aerobic fitness (20-m shuttle run), physical activity (PA; physical activity questionnaire and accelerometry), healthy eating (dietary recall) and cardiovascular risk (CV risk).
zBMI remained unchanged while zWC increased from 0.46±1.07 to 0.57±1.04 (p<0.05). No change was detected in PA or CV risk but aerobic fitness increased by 22% (25.4±15.8 to 30.9±20.0 laps; p<0.01). There was an increase in the variety of vegetables consumed (1.10±1.18 to 1.45±1.24; p<0.05) but otherwise no dietary changes were detected.
While no changes were seen in PA or overall CV risk, zWC increased, zBMI remained stable and aerobic fitness improved during a 7-month intervention.
本研究旨在确定2007 - 2008学年为期7个月的全校体育活动和健康饮食干预措施（“行动学校！不列颠哥伦比亚”）对不列颠哥伦比亚省西北部3个偏远原住民村庄儿童和青少年的短期影响。
对148名儿童和青少年（77名男性，71名女性；年龄12.5±2.2岁）进行了实验前/后设计。
我们评估了肥胖（体重指数[体重/身高(2)]和腰围z评分：zBMI和zWC）、有氧适能（20米穿梭跑）、身体活动（PA；身体活动问卷和加速度计）、健康饮食（饮食回忆）和心血管风险（CV风险）的变化。
zBMI保持不变，而zWC从0.46±1.07增加到0.57±1.04（p<0.05）。PA或CV风险未检测到变化，但有氧适能提高了22%（从25.4±15.8圈增加到30.9±20.0圈；p<0.01）。食用蔬菜的种类有所增加（从1.10±1.18增加到1.45±1.24；p<0.05），但未检测到其他饮食变化。
在为期7个月的干预期间，虽然PA或总体CV风险没有变化，但zWC增加，zBMI保持稳定，有氧适能得到改善。
