Physical activity and food habits are associated with television time on weekends in Brazilian workers

Abstract Aims: Investigated the relation between eating habits or physical activity and weekend television viewing time, regardless of weekday television viewing in Brazilian workers. Methods: A representative cross-sectional study was conducted to measure the relation between weekend television viewing time and dietary indicators and physical activity across different domains in 47,477 workers. A questionnaire measured the time spent watching television per day on the weekend, physical activity indicators across different domains and eating habits. Absolute and relative frequencies and multinomial logistic regression adjusted were used to describe and identify the relationship between time spent watching television on the weekend and physical activity indicators or eating habits. Results: Workers who were physically active in the household (OR=1.09 [95%CI=1.04; 1.15] and OR=1.11 [95%CI=1.06; 1.16]) and leisure-time domains (OR=1.28 [95%CI=1.22; 1.35] and OR=1.30 [95%CI=1.24; 1.36]) were more likely to watch television ≥ 2 and ≥ 4 hours on a weekend day, respectively, than those watching television ≤ 1 hour/day. Consuming sweets (OR=1.30 [95%CI=1.22; 1.39]) and soft drinks (OR=1.11 [95%CI=1.03; 1.19]) was related to television watching ≥ 4 hours on a weekend day. However, workers who consumed fruits (OR=0.81 [95%CI=0.76; 0.85]) and vegetables (OR=0.91 [95%CI=0.86; 0.96]) daily were less likely to spend ≥ 4 hours watching television on a weekend day. Conclusion: We conclude that increased television viewing time on weekends, regardless of weekday television time, is related to leisure-time and household physical activity and with unhealthy eating habits in workers. Interventions focusing on the leisure-time may be an important alternative for health promotion in workplaces.

摘要
研究目的：探讨巴西工人的饮食习惯、身体活动与周末看电视时长的关联，且不考虑其工作日看电视时长的影响。
方法：本研究采用具有代表性的横断面研究设计，纳入47477名工人，分析其周末看电视时长与不同维度的膳食指标、身体活动水平之间的关联。通过问卷收集受试者周末每日看电视时长、不同维度的身体活动指标及饮食习惯相关信息。采用绝对频数、相对频数及校正后的多项logistic回归，分析并明确周末看电视时长与身体活动指标、饮食习惯之间的关联。
结果：与每日看电视时长≤1小时的工人相比，从事家务身体活动（OR=1.09 [95%CI=1.04; 1.15] 和 OR=1.11 [95%CI=1.06; 1.16]）以及休闲时间身体活动（OR=1.28 [95%CI=1.22; 1.35] 和 OR=1.30 [95%CI=1.24; 1.36]）的工人，在周末每日看电视时长分别≥2小时和≥4小时的概率更高。食用甜食（OR=1.30 [95%CI=1.22; 1.39]）与饮用软饮料（OR=1.11 [95%CI=1.03; 1.19]）与周末每日看电视时长≥4小时存在关联。然而，每日食用水果（OR=0.81 [95%CI=0.76; 0.85]）与蔬菜（OR=0.91 [95%CI=0.86; 0.96]）的工人，其周末每日看电视时长≥4小时的概率更低。
结论：本研究表明，无论工作日看电视时长如何，工人周末看电视时长增加均与其休闲时间及家务身体活动、不健康饮食习惯存在关联。针对休闲时间的干预措施，或可成为职场健康促进的重要可行方案。