6
Cards (21)
- A 60 year old has 30% to 40% of aerobic capacity of a 20 year old
- It is apparent that men produce greater loads on their spines during lifting. Men lift faster, have heavier and longer trunk
- Straight knees and rounded back are a recipe for trouble.
- 33% of LBP costs are due to twisting and turning in workplaces (
- Duration of Lifting
- Short - Lifting 1 hour with recovery time 0.2 X work time
- Medium: Lifting between 1 and 2 hours with recovery time 0.3 X lifting time
- Long - lifting between 2 and 8 hours with standard industrial rest allowances for lunch and rest breaks.
- Short - the object moves up/down no more than 25 cm.
- Long - the object moves up/down more than 25 cm
- Liberty mutual tablesplus means that it is above 90%minus means that it is below 10%
- - Using all muscles of your body is more draining but is safer has it does not put all the pressure on one part of your body such as your spine
- - Stoop affects people worse when they have longer bodies
- - More frequency of lifting means less endurance time
- - Ideally always want to lift the load starting above the knee
- - Above the elbow or above the shoulder is very bad for you
- - Always keep center of gravity of an object as close as possible to your body
- - For large objects have a group to help lift with you; if the group is not perfectly harmonized this can cause injury so it is not always safe
- - Asymmetrical lifting is not acceptable injury chance increases significantly
- - Surfaces you stand on can negatively affect you lifting mainly because of a reduction of grip
- o Intention for RWL is to increase it as a safety professional. Try to get all the multipliers to one in order to increase RWL to maximum possible
- o For any MMH you have one lifting from origin and one lowering from destination which means you have to calculate RWL twice. Once for origin and once for destination
- RWL - Recommended Weight Limit
- The sagittal plane is a vertical plane which passes through the body longitudinally.