Check out this treadmiller[1] who documented his very affordable setup and results. I've done the same for around £100 using the tripod-stand from previous standing-desk efforts.
It reversed a slowly creeping weight gain for me. Then we had our first child and the data was skewed, i.e. weight plummeted, but it's back on the trendline now and steady with limited use of the treadmill.
Concentration, noise, typing (I type a lot for a living); none adversely affected. You can adjust and it's surprisingly easy to do so. Besides, as a person with a relatively healthy BMI already (whatever it truly means for health, I was just into the overweight section before), I don't use the setup all day on those days when I do have it on.
A mixture of standing, walking and sitting works fine, switching as and when it feels needed. I understand that doing any one of those all day can be detrimental in the long term so I keep moving. The muscular effects of standing/walking can easily be felt after a few sessions. That's enough of a result for me to know it's worthwhile.
It reversed a slowly creeping weight gain for me. Then we had our first child and the data was skewed, i.e. weight plummeted, but it's back on the trendline now and steady with limited use of the treadmill.
Concentration, noise, typing (I type a lot for a living); none adversely affected. You can adjust and it's surprisingly easy to do so. Besides, as a person with a relatively healthy BMI already (whatever it truly means for health, I was just into the overweight section before), I don't use the setup all day on those days when I do have it on.
A mixture of standing, walking and sitting works fine, switching as and when it feels needed. I understand that doing any one of those all day can be detrimental in the long term so I keep moving. The muscular effects of standing/walking can easily be felt after a few sessions. That's enough of a result for me to know it's worthwhile.
--
[1] http://www.treadmilldeskdiary.com/introduction