Crawford D A, Jeffery R W, French S A
School of Health Sciences, Deakin University, Burwood, Victoria, Australia.
Int J Obes Relat Metab Disord. 1999 Apr;23(4):437-40. doi: 10.1038/sj.ijo.0800845.
This study examined the relationship between TV viewing and three year change in BMI among a community-based sample of 176 men, 428 high-income women and 277 low-income women who were aged 20-45 years at baseline. Cross-sectionally, TV viewing was positively associated with BMI among women, but not among men. This relationship was strongest among low-income women, with only a marginal relationship among high-income women. There were no significant relationships between change in BMI and number of hours of TV viewing at baseline, average number of hours of TV viewing over the three year follow-up, or change in number of hours of TV viewing from baseline to three years. These findings suggest the link between obesity and TV viewing is complex, and that TV viewing may not be the simple marker of sedentariness we may have hoped.
本研究调查了在一个基于社区的样本中，看电视与体重指数（BMI）三年变化之间的关系。该样本包括176名男性、428名高收入女性和277名低收入女性，基线时年龄在20至45岁之间。从横断面来看，看电视与女性的BMI呈正相关，但与男性无关。这种关系在低收入女性中最为明显，在高收入女性中则只有微弱关系。BMI的变化与基线时的看电视时长、三年随访期间的平均看电视时长，或从基线到三年的看电视时长变化之间均无显著关系。这些发现表明，肥胖与看电视之间的联系很复杂，而且看电视可能并非如我们所期望的那样是久坐不动的简单标志。
