Comparison of the Observer, Single-Frame Video and Computer Vision Hand Activity Levels
The ACGIH Hand Activity Level (HAL) was obtained for 419 industrial tasks using three methods: observation, calculated using single-frame video analysis and computer vision. The computer vision methodology produced results that were comparable to single-frame video analysis.
Impact of Seat Material on Comfort, Preference and Performance During Computer-Based Tasks over a Prolonged Bout of Sitting
Prolonged sitting time is associated with negative health outcomes, including physical discomfort. Chair design affects seat posture, micro-movement, and pressure distribution, which impacts the user experience. This study investigated the impact of mesh versus foam material, on comfort, preference, and subjective performance.