JST Vol. 21 (1) Jan. 2013 - Pertanika Journal - Universiti Putra ...

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Ruhaizin Sulaiman, Zahari Taha and Siti Zawiah Md. Dawal Tables 3 and 4, as well as Fig.13, show the results of the waist height of the elderly. It was found that 56.4% of the waist height of the elderly is lower than 36 inches (91.4cm). Referring to the heights of both the stoves and the waist, it was found that Malaysian elderly are working on a higher work-top, and therefore, they are exposed to discomfort and fatigue. The recommended stove height for Malaysian elderly is 82.6cm (32.5 inches). This is a little bit higher than the height of countertop for seated user which is between 28 – 32 inches (71cm – 81.3cm), as suggested by Peterson (1998). In order to fulfil the majority of the elderly stove height requirement, a range of stove height is more significant and it should be established. The 5 th percentile of both the stove height (74.6cm) and waist height (82.6cm) could accommodate 90% of the studied population. Therefore, the recommended range of stove height should be from 74.6 - 82.6cm (or 29.4 - 32.5 inches). The Working Envelope All the variables (namely, stature height, shoulder height, arm span, arm reach forward and waist height) were measured and analysed to identify the elderly working envelopes. The stature and shoulder height were meant for setting the overhead compartment height. Meanwhile, the arm span dimension is to set the width of kitchen cabinet and considering the left and right reaching. The arm reach forward is to set the work-top depth and the frontal reaching. Meanwhile, the waist height is to set the height of the work-top. In this study, the working envelope was calculated based on the 5 th percentile of the above variables so as to ensure that the space fit most subjects. Table 5 shows that the arm reach forward is 67.28cm (26.7 inches), while Fig.14 reveals the frequency of arm reach forward. Table 6 shows that the height envelope is 138.14cm (or 54.4 inches). Meanwhile, the arm span (see Table 7) is 142.6cm (or 56.1 inches). Table 8 shows the results of the shoulder height at 114.2cm (or 45.0 inches). The results of the arm span presented in Table 7 and Fig.16 are to identify the minimum length of the work-top. All the visited kitchens have a longer table top and this comply with the anthropometric of the studied population. TABLE 5: Statistics of arm reach forward ArmReach_Forward N Valid 55.0000 Missing .0000 Mean 76.1964 Std. Deviation 4.8223 Minimum 66.8000 Maximum 89.5000 Percentiles 5 67.2800 50 76.0000 95 85.5200 24 Pertanika J. Sci. & Technol. 21 (1): 283 - 298 (2013) Fig.14: Frequency of arm reach forward
Application of Anthropometric Dimensions for Estimating Stove Height, Stove Depth and Cooking Task Envelope TABLE 6: Statistics of stature height Height N Valid 55.0000 Missing .0000 Mean 149.8055 Std. Deviation 7.4186 Minimum 135.0000 Maximum 167.4000 Percentiles 5 138.1400 50 150.0000 95 163.7600 TABLE 7: Statistics of arm span Arm Span N Valid 55.0000 Missing .0000 Mean 155.8782 Std. Deviation 8.1482 Minimum 134.8000 Maximum 172.8000 Percentiles 5 142.6000 50 155.6000 95 170.2600 TABLE 8: Statistics of Shoulder Height Shoulder Height N Valid 55.0000 Missing .0000 Mean 125.0109 Std. Deviation 6.5600 Minimum 111.5000 Maximum 141.6000 Percentiles 5 114.2000 50 124.5000 95 136.3200 Pertanika J. Sci. & Technol. 21 (1): 283 - 298 (2013) Fig.15: Frequency of the stature height Fig.16: Frequency of arm span Fig.17: Frequency of shoulder height 25
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ISSN: 0128-7680 © 2013 Universiti
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Physico-Chemical and Electrical Pro
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Statistical Analysis Norhashila Has
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INTRODUCTION Tajau, R. et al. A hig
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Aji, I. S., Zinudin, E. S., Khairul
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D. Bachtiar, S. M. Sapuan, E. S. Za
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Az Azrinudin Alidin and Fabio Crest
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Yogan Jaya Kumar, Naomie Salim, Ahm
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Hasiah Mohamed@Omar, Azizah Jaafar
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table should be prepared on a separ
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