Postural Evaluation in a Poultry Farm for Broiler Chickens

Using kinematic reduction for studying grasping postures. An application to power and precision grasp of cylinders

“…When attempting to prevent WMSD, different interventions are performed, such as controlling postures, lowering the required grasp force or changing the shape and size of the grasped surface, among others (Harih, 2014;Kroemer, 1989). Traditionally, when analyzing the upper limb posture to determine the risk of developing WMSD, the focus is set on shoulder and wrist postures, although recent work has also shown interest in recording all hand joints with more detail (Baker et al, 2007a(Baker et al, , 2007bLee and Jung, 2015;Wang et al, 2015Wang et al, , 2014.…”

“…Observation-based assessments are more commonly used by occupational safety and health practitioners due to their affordability (David, 2005). In this sense, some recent studies have used video recording and posture classification to describe hand posture (Hwang et al, 2010;Vergara et al, 2014;Wang et al, 2015Wang et al, , 2014. However, these observation-based techniques are prone to problems caused by the hands being hidden by the handled objects and by other parts of the body, are very time-consuming, and are less reliable than the methods that register joint angles directly (David, 2005), named direct methods.…”

Kinematic and muscular characterisation of the hand during activities of daily living

“…Hand posture also affects loads and excursions of tendons, and stresses on adjacent tissues such as synovial membranes and nerves (An et al, 1983;Lee et al, 2008), which is associated with the risk of developing work-related musculoskeletal disorders (WMSD) (Laoopugsin and Laoopugsin, 2012;Wells et al, 1994). Traditionally, ergonomic interventions to prevent WMSD on upper limb focus on registering shoulder and wrist postures, although recent works have also shown interest in registering all hand joints with more detail (Baker et al, 2007a(Baker et al, , 2007bLee and Jung, 2015b;Wang et al, 2015Wang et al, , 2014.…”

“…Observation-based assessments are more used by occupational safety and health practitioners due to its affordability (David, 2005). In this sense, some recent studies have used video recording and posture classification to describe hand posture (Hwang et al, 2010;Vergara et al, 2014;Wang et al, 2014Wang et al, , 2015. However these observation-based techniques have problems of hiding, are very time-consuming and are less reliable than the methods that register joint angles directly (David, 2005), named direct methods.…”