Millward Hugh, Spinney J E L, Scott Darren
Dept of Geography, Saint Mary's University, Halifax, Nova Scotia, Canada.
J Phys Act Health. 2014 Jul;11(5):895-902. doi: 10.1123/jpah.2012-0115. Epub 2013 May 10.
This study employs national time-diary data to evaluate how much aerobic activity Canadians engage in on a daily basis, how that activity is apportioned by activity domain, and how subgroups within the population vary in their aerobic attainment.
The study employs time-use data from the 2010 General Social Survey of Canada, for 15,390 respondents aged 15 and older. To estimate effort levels, the authors harmonized survey codes with those in the Compendium of Physical Activities. Aerobic activity was defined as moderate or vigorous effort at 3.5 Metabolic Equivalent of Task (MET) or higher.
Among the 4 activity domains, aerobic participation is highest in leisure activities, followed by chores, paid work, and active transportation (AT). Only a minority (42%) of respondents recorded at least 20 mins/day of aerobic activity. Aerobic totals were particularly low for women and those in poor or fair health, and low for students, 15- to 24-year-olds, and those residing in Quebec, Ontario, and larger cities.
The majority of Canadian adults are failing to meet recommended aerobic activity levels. However, there is considerable opportunity to increase aerobic participation for some groups, particularly women and young adults, especially in the leisure and AT domains.
本研究采用全国时间日记数据，以评估加拿大人日常进行的有氧运动量、该活动在各活动领域的分配情况，以及人群中的亚组在有氧运动量方面如何存在差异。
该研究采用了来自2010年加拿大综合社会调查的时间使用数据，涉及15390名15岁及以上的受访者。为了估计运动量，作者将调查代码与《体力活动纲要》中的代码进行了统一。有氧运动被定义为在3.5代谢当量任务（MET）或更高水平下的中等或剧烈运动。
在4个活动领域中，休闲活动中的有氧参与度最高，其次是家务、有偿工作和主动出行（AT）。只有少数（42%）受访者记录了每天至少20分钟的有氧运动。女性、健康状况较差或一般的人、学生、15至24岁的人以及居住在魁北克省、安大略省和大城市的人的有氧运动量尤其低。
大多数加拿大成年人未达到推荐的有氧运动水平。然而，对于一些群体，特别是女性和年轻人，尤其是在休闲和主动出行领域，有相当大的机会增加有氧参与度。
