Healthy Active Living and Obesity (HALO) Research Group, Children's Hospital of Eastern Ontario Research Institute, 401 Smyth Rd., Ottawa, Ontario, Canada.
J Behav Med. 2012 Feb;35(1):1-7. doi: 10.1007/s10865-011-9328-6. Epub 2011 Feb 23.
This study examined the effects of making access to television (TV) viewing contingent on physical activity on the liking and reinforcing value of TV and attitudes towards physical activity in overweight and obese children. Secondary data analysis from a randomized controlled trial designed to increase physical activity and reduce TV viewing in 30, 8-12 years old overweight or obese children by making access to TV contingent on physical activity (intervention) or free access to TV (control). Liking of TV and physical activity was measured by a 100 point visual analog scale, while the relative reinforcing value of TV in relation to physical activity was assessed using a questionnaire based on behavioural choice paradigm that provided children an opportunity to work (button presses) to gain access to TV or physical activity according to a progressive ratio schedule of reinforcement. Enjoyment, Adequacy, Predilection and Motivation for physical activity was assessed by self-report questionnaire. Making access to TV contingent on physical activity showed a trend that approached statistical significance towards increased enjoyment of physical activity and did not adversely affect change in the liking or the relative reinforcing value of TV viewing. Making access to TV contingent on physical activity had no adverse effects on the liking or reinforcing value of TV and even showed a suggestive effect of increased enjoyment of physical activity. Thus, given this intervention markedly increased physical activity and reduced TV viewing in overweight and obese children, long-term evaluations of this interventions to assess sustainability of these behavioral changes and associated health benefits are warranted.
本研究旨在探讨将看电视（TV）的机会与身体活动相联系对超重和肥胖儿童对 TV 的喜好和强化价值以及对身体活动的态度的影响。这是一项随机对照试验的二次数据分析，该试验旨在通过使看电视的机会与身体活动（干预组）或自由看电视（对照组）相关联来增加超重或肥胖的 8-12 岁儿童的身体活动量并减少其看电视的时间。通过 100 点视觉模拟量表来衡量对电视的喜好和身体活动的程度，同时通过基于行为选择范式的问卷评估 TV 相对于身体活动的相对强化价值，该问卷为儿童提供了根据渐进比率强化计划工作（按钮按压）以获得看电视或身体活动的机会。通过自我报告问卷评估对身体活动的享受、适当性、偏好和动机。将看电视的机会与身体活动相联系的做法显示出一种趋势，即增加了对身体活动的享受，并且对看电视的喜好或相对强化价值没有不利影响。将看电视的机会与身体活动相联系并没有对电视的喜好或强化价值产生不利影响，甚至显示出对身体活动的享受增加的暗示效果。因此，鉴于这种干预措施显著增加了超重和肥胖儿童的身体活动量并减少了他们看电视的时间，需要对这种干预措施进行长期评估，以评估这些行为变化的可持续性及其相关的健康益处。
