Parsons T J, Manor O, Power C
Department of Paediatric Epidemiology and Biostatistics, Institute of Child Health, University College London, London, UK.
Eur J Clin Nutr. 2008 Dec;62(12):1355-63. doi: 10.1038/sj.ejcn.1602884. Epub 2007 Aug 22.
To assess whether frequency of television viewing in adolescence (11 and 16 years) or early adulthood (23 years) affected subsequent changes in body mass index (BMI) through to mid-adulthood life, and waist-hip ratio in mid-adulthood.
The 1958 British birth cohort includes all births in 1 week in March 1958 in England, Scotland and Wales. The main analyses included at least 11 301 participants. Outcome measures included BMI at 16, 23, 33 and 45 years and waist-hip ratio at 45 years.
Watching television 'often' at 16 years (but not 11 years) was associated with a faster gain in BMI between 16 and 45 years in males (0.011 kg m(-2) per year, 95% confidence interval (CI) 0.003, 0.019) and females (0.013 kg m(-2) per year, 95%CI 0.003, 0.023). More frequent television viewing at 11, 16 and 23 years was associated with a faster gain in BMI between 23 and 45 years in females, but not in males. Television viewing at 23 years was associated with waist-hip ratio at 45 years: participants watching > or = 5 times per week had a waist-hip ratio 0.01 higher than those watching less often. At 45 years, those watching television for > or = 4 h day(-1) had a waist-hip ratio 0.03-0.04 higher than those watching for <1 h day(-1).
More frequent television viewing in adolescence and early adulthood is associated with greater BMI gains through to mid-adulthood and with central adiposity in mid-life. Television viewing may be a useful behaviour to target in strategies to prevent obesity.
评估青少年期（11岁和16岁）或成年早期（23岁）的看电视频率是否会影响直至中年期体重指数（BMI）的后续变化以及中年期的腰臀比。
1958年英国出生队列包括1958年3月在英格兰、苏格兰和威尔士1周内的所有出生人口。主要分析纳入了至少11301名参与者。结局指标包括16岁、23岁、33岁和45岁时的BMI以及45岁时的腰臀比。
16岁（而非11岁）时“经常”看电视与男性（每年0.011kg/m²，95%置信区间（CI）0.003，0.019）和女性（每年0.013kg/m²，95%CI 0.003，0.023）在16岁至45岁期间BMI的更快增加有关。11岁、16岁和23岁时看电视频率更高与女性在23岁至45岁期间BMI的更快增加有关，但与男性无关。23岁时看电视与45岁时的腰臀比有关：每周观看≥5次的参与者腰臀比比观看较少的参与者高0.01。在45岁时，每天看电视≥4小时的参与者腰臀比比每天观看<1小时的参与者高0.03 - 0.04。
青少年期和成年早期看电视频率更高与直至中年期BMI的更大增加以及中年期的中心性肥胖有关。看电视可能是预防肥胖策略中一个有用的干预行为目标。
