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Ergonomía Ocupacional. Investigaciones y Aplicaciones. Vol 3 2010 Figure 6. Adjustment of the curve of right hand wrist 4.4 Preliminary test 4 The corresponding temperature behavior is shown in Figure 7 and 8. If we compare both figures we can see that both temperature behaviors in both wrists are similar has shown in the previous preliminary test and. The maximum time of stress of the hands was to similar one from each other, and based on this we could say the following important points: The maximum stress points were reached in similar times in both wrists. On left hand wrist at 12:52:14 and the temperature was 33.686˚C and on right hand wrist was 13:03:53 and the temperature was 33.114˚C. Factors like temperature and time were similar. A lower back pain was identified around 12:55:35 and close to the end of the experimentation a pain on right hand wrist around 14:54:10. Anomalies on right shoulder were detected during the period when the temperature began to decrease around 13:42:52. Also a pain on right palm was identified around 14:13:43. At the end of the test a pain on left shoulder was identified around 3:52:40 and also the pain on right shoulder increased in a several way, this occurred around 3:56:36. On the other hand it was possible to adjust a polinomial third order equation that represents the subject temperature behavior and as a result a coefficient of determination of 97.3% for the left hand wrist and 95.6% for right hand wrist. Sociedad de Ergonomistas de México, A.C. 124
4.5 Averages Ergonomía Ocupacional. Investigaciones y Aplicaciones. Vol 3 2010 Figure 7. Adjustment of the curve of left hand wrist Figure 8. Adjustment of the curve of right hand wrist Taking in account the maximum temperatures reached in the experiment stress points of all the preliminary test of both hand wrists, we obtained averages for each hand wrist, and the equation 1 shows how to calculate the averages: Sociedad de Ergonomistas de México, A.C. 125
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ERGONOMÍA OCUPACIONAL INVESTIGACIO
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ERGONOMÍA OCUPACIONAL INVESTIGACIO
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Prefacio La Sociedad de Ergonomista
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ERGONOMICS AND EDUCATION Ergonomía
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Ergonomía Ocupacional. Investigaci
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3.1 Programming stage Ergonomía Oc
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(DINBelg) 4. Percentiles are calcul
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5. CONCLUSIONS Ergonomía Ocupacion
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. Table 12.Descriptive statistics f
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