HAL - Hand Activity Scale

Major factors that increase the risk of developing an MSD are the gripping force of the hand and the repetition of hand use. This video describes how to quantify repetition using the Hand Activity Scale (HAL). 

The Hand Activity Scale (HAL) was developed to rate the repetitiveness of hand use. It also accounts for recovery time and the amount of time gripping with the hands. This extra information makes it better for identifying MSD hazards and reducing them. For example, is it the frequency of the action or the lack of recovery that needs to be addressed?