is there evidence that determines the appropriate amount of standing time in a day?

Question

The closest question I was able to find from my search results was How to correctly use an adjustable desk? that was asked almost a year ago with no answers. That said, I spend anywhere from eight to sixteen hours a day at my desk sitting. Recently I purchased an adjustable smart desk that I will configure a plist to fire on my Mac that will tell the adjustable desk to move in X position at a set time interval.

That said, I've been looking for any evidence that states when is the appropriate time to stand or sit in the morning? As in, after I first wake-up from my slumber would it be healthier on the body to start the day in a standing position?

Several years ago I experienced a very bad back accident and I've been looking for any documentation or writings on how to properly span the amount of standing and sitting intervals. When I refer to intervals I mean is there a healthier benefit when scripting the desk adjustment to hourly or in two hour intervals?

Answer 1

Aren't you in luck, I asked a very similar question over in physical fitness SE:

https://fitness.stackexchange.com/questions/31109/how-effective-are-standing-desks

Here is the top answer:

A recent meta-analysis of 23 published studies is MacEwen, MacDonald, and Burr, "A systematic review of standing and treadmill desks in the workplace," Preventative Medicine 70(January 2015):50-58.

The article is here: http://dx.doi.org/10.1016/j.ypmed.2014.11.011

Quoting from the paper's summary:

Treadmill desks led to the greatest improvement in physiological outcomes including postprandial glucose, HDL cholesterol, and anthropometrics, while standing desk use was associated with few physiological changes. Standing and treadmill desks both showed mixed results for improving psychological well-being with little impact on work performance.