Adults exposed to extended periods of static seated computer work, especially females, have elevated risks of developping musculoskeletal symptoms. However, static standing work is also associated to issues with the musculoskeletal and vascular systems. To address this, alternating between seated and standing postures has been proposed in the form of sit-stand desks; however, their sex-specific impacts on biomechanical, performance and discomfort outcomes remain unclear. As a result, repeated measurements will be taken during a 90-minute computer task, involving both typing and mousing.