The effect of knee extension exercise on cognitive and computer skill performance in office workers.

Objectives. This study compared cognitive and computer skill performances of employees in conventional and active sitting workstations using a new active footrest (AFR) for knee extension exercises (KEE). Methods. In this quasi-experimental study, 32 office workers aged 28-50 years (M 42.38, SD 4.21) from Kerman University of Medical Sciences were assessed. Participants' performance was evaluated through three cognitive and three computer skill tasks across two sessions, utilizing crossover randomization in both simulated conventional and active (with AFR) workstations. The cognitive tasks involved working memory, selective attention and learning, measured via the two-back, Stroop color-word and serial color matching tests, respectively. The computer skill tasks included typing Persian text and mouse pointing performance assessed with GoFitts based on Fitts' law. Data analysis was conducted using SPSS version 22 at a significance level of 0.05. Results. There was no significant difference in cognitive and typing short-term performances between office workers in active and conventional workstations (p > 0.05). However, participants' speed while performing mouse tasks in the active workstation was significantly lower than in the conventional workstation (p < 0.05). Conclusion. Results indicated that short-term work performance, except for mouse tasks, was not affected by performing simultaneous KEE.