Table A1

Average effort as a function of lifting task parameters

Observation no.Weight of loadHorizontaldistanceTwisting angleVertical travel distanceAverage effortSum
Interpretation of linguistic descriptors for task parameters: 1, light, close, small, or short; 2, moderate; 3, heavy, far, large, or long.
Interpretation of linguistic descriptors for effort: 1, very low; 2, low; 3, moderate; 4, somewhat high; 5, high; 6, very high; 7, extremely high.
The data have been ordered by increasing value of effort.
Sum = 2 × weight level + horizontal distance level + twisting angle level + vertical travel distance level.
1 1 1 1 1 1.11 5
211121.416
311211.436
412111.466
5 1 2 1 2 1.73 7
6 2 1 1 1 1.77 7
7 1 1 2 2 1.80 7
8 1 2 2 1 1.83 7
9 1 1 1 3 1.94 7
10 1 3 1 1 1.96 7
11 1 1 3 1 2.10 7
1221122.148
1322112.158
1412222.178
1521212.198
1613122.298
1712132.318
1811232.398
1911322.428
2013212.518
2112312.578
22 2 2 1 2 2.64 9
23 2 1 2 2 2.67 9
24 3 1 1 1 2.73 9
25 2 2 2 1 2.74 9
26 2 1 1 3 2.77 9
27 2 3 1 1 2.79 9
28 1 3 2 2 2.82 9
29 1 2 2 3 2.84 9
30 2 1 3 1 2.87 9
31 1 3 1 3 2.88 9
32 1 2 3 2 2.88 9
33 1 1 3 3 3.02 9
3431123.1610
3513313.199
3622223.2110
3732113.2310
3831213.2510
3922133.2710
4023123.2910
4121323.3010
4221233.3610
4323213.3910
4422313.4110
4513233.4710
4613323.5110
4712333.5210
48 3 2 1 2 3.69 11
49 3 1 2 2 3.72 11
50 3 1 1 3 3.75 11
51 3 2 2 1 3.85 11
52 2 3 1 3 3.90 11
53 2 3 2 2 3.90 11
54 2 2 2 3 3.91 11
55 2 2 3 2 3.92 11
56 3 3 1 1 3.96 11
57 2 1 3 3 4.03 11
58 3 1 3 1 4.03 11
59 2 3 3 1 4.09 11
60 1 3 3 3 4.13 11
6132224.2812
6232134.3312
6331234.3512
6433124.4212
6531324.4512
6623234.5312
6722334.5812
6823324.6012
6933214.6112
7032314.6112
71 3 2 2 3 4.94 13
72 3 3 2 2 5.00 13
73 3 2 3 2 5.01 13
74 3 1 3 3 5.02 13
75 3 3 1 3 5.02 13
76 2 3 3 3 5.18 13
77 3 3 3 1 5.24 13
7832335.5414
7933235.6014
8033325.6514
81 3 3 3 3 6.16 15