Repetitive work
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No | 813 | 42 | 5.2 | 1.0 | – | 1585 | 24 | 1.5 | 1.0 | – |
Yes | 2033 | 98 | 4.8 | 0.9 | 0.6 to 1.4 | 3576 | 76 | 2.1 | 1.3 | 0.6 to 2.2 |
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Task cycle time (seconds) | | | | | | | | | | |
Continuous variable, repetitive work only, 10 unit increment | 2033 | 98 | 4.8 | 1.0 | 0.99 to 1.00 | 3576 | 76 | 2.1 | 1.0 | 0.99 to 1.00 |
Grouped exposure, all reference | 813 | 42 | 5.2 | 1.0 | – | 1585 | 24 | 1.5 | 1.0 | – |
>21 seconds | 1042 | 55 | 5.3 | 1.0 | 0.6 to 1.6 | 1701 | 34 | 2.0 | 1.4 | 0.6 to 2.5 |
1–20 seconds | 991 | 43 | 4.3 | 0.8 | 0.5 to 1.3 | 1875 | 42 | 2.2 | 1.2 | 0.6 to 2.4 |
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Duration of exertion (% of cycle time)
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Continuous variable, repetitive work only, 10 unit increment | 2033 | 98 | 4.8 | 0.9 | 0.8 to 1.2 | 3576 | 76 | 2.1 | 0.9 | 0.8 to 1.1 |
Grouped exposure, all reference | 813 | 42 | 5.2 | 1.0 | – | 1585 | 24 | 1.5 | 1.0 | – |
0–75% | 969 | 47 | 4.9 | 1.0 | 0.6 to 1.5 | 1859 | 40 | 2.2 | 0.8 | 0.5 to 1.3 |
>75% | 1064 | 51 | 4.8 | 0.9 | 0.7 to 1.1 | 1717 | 36 | 2.1 | 1.0 | 0.8 to 1.3 |
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Repetitive work (wrist movements/minute)
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Continuous variable, repetitive work only, 10 unit increment | 2033 | 98 | 4.8 | 0.9 | 0.5 to 1.7 | 3576 | 76 | 2.1 | 1.0 | 0.6 to 1.6 |
Grouped exposure, all reference | 813 | 42 | 5.2 | 1.0 | – | 1585 | 24 | 1.5 | 1.0 | – |
1–15/minute | 1288 | 61 | 4.7 | 1.0 | 0.6 to 1.5 | 2391 | 53 | 2.2 | 1.3 | 0.5 to 1.9 |
16–60/minute | 745 | 37 | 5.0 | 0.9 | 0.5 to 1.5 | 1185 | 23 | 1.9 | 1.2 | 0.8 to 3.7 |
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Force requirements
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Reference | 813 | 42 | 5.2 | 1.0 | – | 1585 | 24 | 1.5 | 1.0 | – |
low <10 % of MVC | 1092 | 58 | 5.3 | 1.0 | 0.6 to 1.6 | 1979 | 48 | 2.4 | 1.5 | 0.9 to 2.5 |
High ⩾10 % of MVC | 941 | 40 | 4.3 | 0.9 | 0.7 to 1.2 | 1597 | 28 | 1.8 | 1.0 | 0.8 to 1.4 |