J Phys Act Health. 2018 Dec 1;15(12):895-899. doi: 10.1123/jpah.2018-0064. Epub 2018 Nov 21.
There is no research on the association of television (TV) watching with atrial fibrillation (AF).
From 1987 to 1989, the authors obtained information on the frequency of TV watching in 14,458 participants, aged 45-64 years, without a history of AF. The authors used the Cox proportional hazards model to estimate hazard ratios and their 95% confidence intervals of AF according to the frequency of TV watching ("never or seldom," "sometimes," "often," or "very often").
During the 294,553 person-years of follow-up, the authors identified 2,476 AF events. Adjustment for other potential confounding factors, including physical activity, did not change the associations, in which "very often" watching TV carried 1.28 (95% confidence interval, 1.09-1.50) times AF risk compared with "never or seldom" watching TV (P for trend = .002). Even among individuals who met a recommended level of physical activity, watching TV "very often" carried 1.36 (1.02-1.82) times AF risk, compared with watching TV "never or seldom."
Greater frequency of TV watching was independently associated with increased risk of AF even after adjusting for physical activity. Moreover, a recommended level of physical activity did not eliminate the increased risk of frequent TV watching for AF. Avoiding frequent TV watching might be beneficial for AF prevention.
目前尚无关于看电视与心房颤动（AF）之间关联的研究。
作者于 1987 年至 1989 年期间，获取了 14458 名年龄在 45-64 岁、无 AF 病史的参与者观看电视的频率信息。作者使用 Cox 比例风险模型，根据观看电视的频率（“从不或很少”、“有时”、“经常”或“非常经常”）来估计 AF 的风险比及其 95%置信区间。
在 294553 人年的随访期间，作者共发现 2476 例 AF 事件。对其他潜在混杂因素（包括体力活动）进行调整后，并未改变相关性，其中与“从不或很少”观看电视相比，“非常经常”观看电视的 AF 风险增加 1.28 倍（95%置信区间，1.09-1.50）（趋势 P 值=0.002）。即使在达到推荐体力活动水平的个体中，与“从不或很少”观看电视相比，“非常经常”观看电视的 AF 风险也增加 1.36 倍（1.02-1.82）。
即使在调整体力活动后，看电视的频率越高，AF 的发病风险也会独立增加。此外，推荐的体力活动水平并不能消除频繁看电视对 AF 的风险增加。避免频繁看电视可能有益于 AF 的预防。
