Table 3 Meaning and range of limiting values.
Limiting quantity | Meaning in the NIOSH lifting equation | Significance of mapping | Range of values |
|---|---|---|---|
LC | Load constant | – | 23 kg |
H | The horizontal distance from the center of the palms to midway between the ankle joints | 1/2 the length of the basket + the horizontal distance between the two ankle joints from the basket | 300–540 mm |
V | The vertical distance from the v hands to the floor | Optimal hand position height | 200–1000 mm |
D | The vertical distance from the start and end of the lift | Shopping trolley basket height | 400–900 mm |
FM | Frequency parameter of the lift | Number of times object was grasped | 8 times per hour |
A | Angle of deviation from the sagittal plane | Body rotation angle | 0 |
CM | Parameters for easy object grasping | The difficulty of grasping items | 1 |
