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。