Table 2:

MMH task Parameters at Different Levels

No	Symbol	Factors	Level			Units
			Level-1	Level-2	Level-3
1	A	Freq. of lift	1	4.3	6.67	lifts/min
2	B	Box size	Small	Large	-	cm3
3	C	Height of lift	Floor to knuckle height	Knuckle to shoulder height	Shoulder to arm reach	cm