Table 1 Extent of time for various job tasks and exposures according to Wiktorin [37]

A. Sitting (a)

−4.2

65

3

77

1

0.0000

B. Standing (a)

5.3

64

2

80

5

0.0000

C. Walking (a)

3.1

63

2

78

3

0.0023

D. Operating a computer (a)

−3.7

64

2

80

1

0.0003

E. Work with vibrating hand tools (a)

2.1

64

1

79

1

0.0385

F. Work with arms in or over shoulder level (a)

3.4

65

1

80

1

0.0006

G. Work with stretched arms ≥ 45 degrees forward or laterally (a)

3.6

63

1

80

2

0.0004

H. Work with almost maximally flexed neck (a)

3.0

63

1

79

2

0.0025

I. Work with identical arm movements many times per minute (a)

4.4

64

1

79

3

0.0000

J. Work with identical hand/finger movements many times/minute (a)

2.7

64

2

79

3

0.0074

K. Precision work > 2 hours/day (b)

1.2

65

1

80

1

0.2441

L. Work with arms in or over shoulder height > ½ hour/day (b)

3.5

65

1

80

1

0.0004

M. Work with arm extension ≥ 45 degrees forward or laterally > ½ hour/day (b)

3.3

63

1

78

4

0.0010

N. Work with identical arm movements many times/minute > 2 hours/day (b)

4.8

63

1

80

5

0.0000

O. Work with identical hand or finger movements many times/minute > 2 hours/day (b)

2.6

65

1

79

5

0.0088

P. Fingers exposed to cold (b)

2.9

65

1

76

1

0.0041