Our findings of a positive trend between TV-viewing at 45 y and subsequent BMI and, less consistently, for work sitting, are specific to mid-adulthood.
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Implications and conclusions In summary, we found an increasing trend of higher 45–50 y BMI gain with higher TV-viewing at 45 y and although no trend was seen for work sitting, there was a detrimental effect on BMI gain for those sitting for 2–3 h/d.
There was no linear trend between time spent sitting at work and 45 y and 50 y BMI (Model 1, Table 2 ), but a negative trend with BMI change 45–50 y, i.e.