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033 奈良県立医科大学医学部看護学科紀要 >
Vol.5 >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10564/1078
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| Title: | The Effects of Two Dissimilar Environments with Equivalent Wet Bulb Globe Temperature on Performance of Manual Handling Tasks |
| Other Titles: | 同一WBGT(湿球黒球温度)設定時における環境条件の違いがヒトの作業パフオーマンスに及ぼす影響 |
| Authors: | Davies, Andrew
デイヴィス, アンドリュー |
| Keywords: | heat stress
WBGT
manual handling |
| Issue Date: | 15-Mar-2009 |
| Publisher: | 奈良県立医科大学医学部看護学科 |
| Citation: | 奈良県立医科大学医学部看護学科紀要 Vol.5 p.11-18 |
| Abstract: | Wet Bulb Globe Temperature (WBGT) is probably the most widely used of
many heat stress indices. An underlying assumption is that differing
combinations of temperature and relative humidity which yield the same
WBGT will impose the same thermal load. Recent research has cast doubt on
this assumption however. The purpose of this study was to investigate the
effects of two dissimilar environments with an equivalent WBGT on
participants petforming an intermittent box-lifting task. 12 males (mean ± sd),
age 25.2 ± 6 yrs, mass 74.9 ± 11.9 kg, stature 1.7 ± 0.1 m were recruited and
acclimated over five days (1 hr sessions) in an environmental chamber at
38℃, 70% relative humidity (RH). They completed 6 x 35-min trials on
consecutive weekdays in two environments: warm-humid, 30℃, 65% RH
(27℃ WBGT); hot-dry, 39℃, 22% RH (27℃ WBGT) and three lift
frequencies: 1, 4.3 and 6.7 lifts.min^-1. There were no significant differences in
physiological response (heart rate and core temperature), rating of perceived
exertion (RPE) and maximum acceptable weight of lift (MAWL) between the
two environments. These findings support the underlying assumption of
WBGT and contradict recent research. It is possible that differences in
response only manifest themselves at higher values of WBGT or during
longer bouts of continuous exercise. |
| URI: | http://hdl.handle.net/10564/1078 |
| ISSN: | 13493884 |
| Appears in Collections: | Vol.5
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Files in This Item:
| File |
Description |
Size | Format |
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| 11-18p.The Effects of Two Dissimilar Environments with Equivalent Wet Bulb Globe Temperature on.pdf | | 1081Kb | Adobe PDF | View/Open |
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