Table 1b.
Proportion of the work shift spent at relative work intensities (inclusive of work and rest periods) for burned cane cutters (BCC), seed cutters (SC) and drip irrigation repair workers (DIRW) across the work shift during Harvest 3. [%HRmax=percentage of maximal HR; CI=confidence interval.]
| Proportion of work shift spent at relative work intensities | ||||||||||||
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| Light <50 %HRmax | Light – moderate 51–60 %HRmax | Moderate 61–70%HRmax | Hard 71–80 %HRmax) | Very hard 81–90 %HRmax | Maximal 91–100 %HRmax | |||||||
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| Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | |||||||
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| % | Minutes | % | Minutes | % | Minutes | % | Minutes | % | Minutes | % | Minutes | |
| BCC (N=40) | 26 (22–29) | 87 (74–99) | 24 (20–28) | 80 (67–94) | 37 (32–42) | 125 (107–143) | 12 (8–17) | 42 (27–56) | 1 (0–3) | 4 (0–9) | 0 (0–0) | 0 (0–0) |
| SC (N=58) | 23 (20–26) | 87 (76–98) | 31 (27–35) | 117 (102–132) | 32 (28–35) | 127 (111–144) | 14 (10–17) | 61 (45–78) | 1 (0–2) | 6 (2–10) | 0 (0–0) | 0 (0–1) |
| DIRW (N=39) | 46 (38–55) | 215 (173–257) | 39 (33–45) | 180 (153–207) | 13 (8–18) | 58 (35–81) | 2 (0–3) | 8 (3–13) | 0 (0–0) | 0 (0–0) | 0 (0–0) | 0 (0–0) |