#Kensington pocket mouse 72114 series

When comparing performance, children took almost twice as long to move the mouse between targets (p < 0.05) and were slightly faster when operating the mouse next to the small keyboard. When comparing children to adults, children worked with significantly more arm abduction with both keyboards however there were no significant differences between children and adults in internal and external rotation of the forearm. Compared to the standard keyboard, both children and adults had less arm abduction (p < 0.10) and external rotation of the forearm (p < 0.05) when using the mouse next to the small keyboard. During mouse operation arm abduction and forearm rotation were measured using overhead photographs, and mouse performance was characterized by measuring movement times and the time it took to press-and-release (click) the left mouse button.

#Kensington pocket mouse 72114 series

Subjects were asked to perform a series of standardized point-and-click tasks using a standard-sized mouse with both the standard and small keyboard. A total of 42 subjects, including 28 adults and 14 children between the ages 6?8 participated in the study. The aim of this study was to investigate whether there were any postural and performance differences when children and adults used the mouse next to a standard 104 key keyboard with a numeric keypad compared to a small, more compact keyboard without a numeric keypad. Studies have shown that there are adverse performance and postural impacts when children use standard, adult-sized computer mice however, the impact of children using adult-sized keyboards has been less rigorously evaluated. touchscreen and gestural controls) were rare, however, those reported to date indicate that these devices are currently unsuitable as replacements for traditional devices.Īlternative input devices that reduce biomechanical loading may make better choices for preventing or alleviating musculoskeletal outcomes during computer use, however, it is unclear whether many existing designs are effective.

Most alternative keyboards evaluated in the literature reduce biomechanical loading and musculoskeletal outcomes. rollerbar) were consistently associated with decreased biomechanical loading while other designs had inconsistent results across studies. Some alternative pointing device designs (e.g. Included studies evaluated biomechanical loading and/or musculoskeletal outcomes of users' distal or proximal upper extremity regions associated with the operation of alternative input devices (pointing devices, mice, other devices) that could be used in a desktop personal computing environment during typical office work. To review studies describing and evaluating the biomechanical loading and musculoskeletal outcomes associated with conventional and alternative input devices. While many alternative designs have been proposed, it is unclear whether these devices reduce biomechanical loading and musculoskeletal outcomes. Extended use of conventional computer input devices is associated with negative musculoskeletal outcomes.