The use of a wearable camera to capture and categorise the environmental and social context of self-identified eating episodes
The use of a wearable camera to capture and categorise the environmental and social context of self-identified eating episodes
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DOI：
10.1016/j.appet.2015.05.019
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发表时间：
2015-09-01
期刊：
影响因子：
5.4
通讯作者：
Mhurchu, Cliona Ni
中科院分区：
文献类型：
--
作者：
Gemming, Luke;Doherty, Aiden;Mhurchu, Cliona Ni
调查环境和社会因素对自由生活环境中饮食行为影响的研究是有限的。这项研究调查了使用可穿戴相机图像来评估饮食事件背景的效用。成年参与者 (N = 40) 在 15 天的自由生活条件下佩戴 SenseCam 可穿戴相机 4 天（包括 1 个熟悉日），并使用 3 个图像辅助多次 24 小时饮食回忆来评估他们的饮食。根据参与者的环境和社会背景对参与者饮食事件的图像进行分析和注释；包括就餐地点、外部环境（室内/室外）、物理位置、社交互动和观看媒体屏幕。使用了 107 天的数据，总共考虑了 742 次饮食事件进行注释。 29% (214/742) 的剧集由于缺少图像 (12%, n = 85)、黑暗/模糊图像 (8%, n = 58)、未佩戴相机 (7%, n = 54) 以及混合原因 (2%, n = 17) 而无法分类。大多数进食事件发生在家里（59%）和室内（91%）。与在家相比，在食品零售商处用餐的时间延长了 24.8 分钟（95% CI：13.4 至 36.2），且能量含量更高（平均差异 = 1196 kJ 95% CI：242、2149）。大多数事件是坐在桌子（27%）或沙发（26%）上，但站着（19%）或在桌子上（18%）吃饭也很常见。 45% 的剧集中有明显的社交互动，55% 的剧集中有媒体屏幕被观看。与不看屏幕时相比，在家看电视时用餐时间延长了 3.1 分钟（95% CI：-0.6 至 6.7），能量摄入量更高（543 kJ 95% CI：-32 至 1120）。围绕饮食和饮食行为的环境和社会背景可以使用可穿戴相机图像进行评估。 (C) 2015 Elsevier Ltd. 保留所有权利。
Research investigating the influence of the environmental and social factors on eating behaviours in free-living settings is limited. This study investigates the utility of using wearable camera images to assess the context of eating episodes. Adult participants (N = 40) wore a SenseCam wearable camera for 4 days (including 1 familiarisation day) over a 15-day period in free-living conditions, and had their diet assessed using three image-assisted multiple-pass 24-hour dietary recalls. The images of participants' eating episodes were analysed and annotated according to their environmental and social contexts; including eating location, external environment (indoor/outdoor), physical position, social interaction, and viewing media screens. Data for 107 days were used, with a total of 742 eating episodes considered for annotation. Twenty nine per cent (214/742) of the episodes could not be categorised due to absent images (12%, n = 85), dark/blurry images (8%, n = 58), camera not worn (7%, n = 54) and for mixed reasons (2%, n = 17). Most eating episodes were at home (59%) and indoors (91%). Meals at food retailers were 24.8 minutes longer (95% CI: 13.4 to 36.2) and were higher in energy (mean difference = 1196 kJ 95% Cl: 242, 2149) than at home. Most episodes were seated at tables (27%) or sofas (26%), but eating standing (19%) or at desks (18%) were common. Social interaction was evident for 45% of episodes and media screens were viewed during 55% of episodes. Meals at home watching television were 3.1 minutes longer (95% Cl: -0.6 to 6.7) and higher in energy intake than when no screen was viewed (543 kJ 95% CI: -32 to 1120). The environmental and social context that surrounds eating and dietary behaviours can be assessed using wearable camera images. (C) 2015 Elsevier Ltd. All rights reserved.