Sport & Exercise Sciences Research Institute, University of Ulster, Newtownabbey, Co. Antrim, BT37 0QB, UK.
Prev Med. 2012 Feb;54(2):140-4. doi: 10.1016/j.ypmed.2011.12.008. Epub 2011 Dec 14.
To report on the contribution walking makes to total weekly physical activity and the relationship between the volume and intensity of walking and leanness in a representative sample of the Northern Ireland population.
4563 adults participated in this cross-sectional survey of physical activity behaviour. Self-reported height and weight was used to determine inverse body mass index (iBMI) as a measure of leanness. Data across all domains of physical activity including self-reported volume and intensity of walking (in bouts of 10 min or more) were analysed to determine their contribution to leanness using ANCOVA, having controlled for age, gender, socio-economic and smoking status.
Over 68% of the participants reported walking >10 minutes during the previous week but only 24% report walking at a brisk or fast pace. Time walking at a brisk or fast pace for personal transport was identified as having the strongest positive association with being lean (F(1,4256)=10.45, β=0.051 cm(2) kg(-1) min(-1) (SE=0.016),P=0.001).
In addition to increasing the amount of walking and the percentage of people walking regularly, public health messages encouraging an increase in walking pace may be valuable to increase the proportion of the population meeting physical activity guidelines and gaining associated health benefits.
报告步行在总周身体活动中所占的比例，以及在北爱尔兰人群代表性样本中，步行量和强度与苗条程度之间的关系。
共有 4563 名成年人参与了这项横断面的体力活动行为调查。通过自我报告的身高和体重来确定反体质指数（iBMI），作为衡量苗条程度的指标。对所有体力活动领域的数据（包括自我报告的步行量和强度（以 10 分钟或更长时间为一段））进行分析，以确定它们对苗条程度的贡献，采用协方差分析（ANCOVA），并控制了年龄、性别、社会经济状况和吸烟状况。
超过 68%的参与者报告在上周有超过 10 分钟的步行时间，但只有 24%的人报告以轻快或快速的步伐行走。用于个人交通的轻快或快速步行时间与苗条程度呈最强的正相关（F（1，4256）=10.45，β=0.051cm2kg-1min-1（SE=0.016），P=0.001）。
除了增加步行量和定期步行的人数外，鼓励提高步行速度的公共卫生信息可能对增加符合体力活动指南的人群比例和获得相关健康益处具有重要意义。
