A research team of German and Dutch government scientists compared work performance such as reading, typing, mousing, and telephoning while using a traditional seated work station, a standing work station, a treadmill desk, and an Active Motion Sitting work station (LifeBalance Station). Results show that participants that used the Active Motion Sitting work station were substantially able to complete work tasks just about exactly like the seated or standing participants. Participants using a treadmill desk showed some deterioration in their ability to perform tasks that require fine motor coordination, such as typing or mousing – especially as walking speed increased.
Reference: Eva-Maria Burford, Juliane Botter, Dianne Commissaris, Reinier Könemann, Suzanne Hiemstra-van Mastrigt, Rolf Peter Ellegast. "The Effect of Dynamic Workstations on the Performance of Various Computer and Office-Based Tasks" In: Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management. Human Body Modeling and Ergonomics - Lecture Notes in Computer Science; Volume 8026, 2013, pp 205-212; New York: Springer.