Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment
Objectives The dose-response relationship for handtransmitted vibration has been investigated extensively in temperate environments. Since the clinical features of hand-arm vibration syndrome (HAVS) differ between the temperate and tropical environment, we conducted this study to investigate the dos...
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2013
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| author | Su, A.T. Maeda, S. Fukumoto, J. Darus, A. Hoe, V.C.W. Miyai, N. Isahak, M. Takemura, S. Bulgiba, A. Yoshimasu, K. Miyashita, K. |
| author_facet | Su, A.T. Maeda, S. Fukumoto, J. Darus, A. Hoe, V.C.W. Miyai, N. Isahak, M. Takemura, S. Bulgiba, A. Yoshimasu, K. Miyashita, K. |
| author_sort | Su, A.T. |
| collection | UM |
| description | Objectives The dose-response relationship for handtransmitted vibration has been investigated extensively in temperate environments. Since the clinical features of hand-arm vibration syndrome (HAVS) differ between the temperate and tropical environment, we conducted this study to investigate the dose-response relationship of HAVS in a tropical environment. Methods A total of 173 male construction, forestry and automobile manufacturing plant workers in Malaysia were recruited into this study between August 2011 and 2012. The participants were interviewed for history of vibration exposure and HAVS symptoms, followed by hand functions evaluation and vibration measurement. Three types of vibration doses-lifetime vibration dose (LVD), total operating time (TOT) and cumulative exposure index (CEI)-were calculated and its log values were regressed against the symptoms of HAVS. The correlation between each vibration exposure dose and the hand function evaluation results was obtained. Results The adjusted prevalence ratio for finger tingling and numbness was 3.34 (95 CI 1.27 to 8.98) for subjects with lnLVD <= 20 ln m(2) s(-4) against those <16 ln m(2) s(-4). Similar dose-response pattern was found for CEI but not for TOT. No subject reported white finger. The prevalence of finger coldness did not increase with any of the vibration doses. Vibrotactile perception thresholds correlated moderately with lnLVD and lnCEI. Conclusions The dose-response relationship of HAVS in a tropical environment is valid for finger tingling and numbness. The LVD and CEI are more useful than TOT when evaluating the dose-response pattern of a heterogeneous group of vibratory tools workers. |
| first_indexed | 2024-03-06T05:24:51Z |
| format | Article |
| id | um.eprints-9839 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:24:51Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | um.eprints-98392014-04-15T08:08:35Z http://eprints.um.edu.my/9839/ Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment Su, A.T. Maeda, S. Fukumoto, J. Darus, A. Hoe, V.C.W. Miyai, N. Isahak, M. Takemura, S. Bulgiba, A. Yoshimasu, K. Miyashita, K. R Medicine Objectives The dose-response relationship for handtransmitted vibration has been investigated extensively in temperate environments. Since the clinical features of hand-arm vibration syndrome (HAVS) differ between the temperate and tropical environment, we conducted this study to investigate the dose-response relationship of HAVS in a tropical environment. Methods A total of 173 male construction, forestry and automobile manufacturing plant workers in Malaysia were recruited into this study between August 2011 and 2012. The participants were interviewed for history of vibration exposure and HAVS symptoms, followed by hand functions evaluation and vibration measurement. Three types of vibration doses-lifetime vibration dose (LVD), total operating time (TOT) and cumulative exposure index (CEI)-were calculated and its log values were regressed against the symptoms of HAVS. The correlation between each vibration exposure dose and the hand function evaluation results was obtained. Results The adjusted prevalence ratio for finger tingling and numbness was 3.34 (95 CI 1.27 to 8.98) for subjects with lnLVD <= 20 ln m(2) s(-4) against those <16 ln m(2) s(-4). Similar dose-response pattern was found for CEI but not for TOT. No subject reported white finger. The prevalence of finger coldness did not increase with any of the vibration doses. Vibrotactile perception thresholds correlated moderately with lnLVD and lnCEI. Conclusions The dose-response relationship of HAVS in a tropical environment is valid for finger tingling and numbness. The LVD and CEI are more useful than TOT when evaluating the dose-response pattern of a heterogeneous group of vibratory tools workers. 2013 Article PeerReviewed Su, A.T. and Maeda, S. and Fukumoto, J. and Darus, A. and Hoe, V.C.W. and Miyai, N. and Isahak, M. and Takemura, S. and Bulgiba, A. and Yoshimasu, K. and Miyashita, K. (2013) Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment. Occupational and Environmental Medicine, 70 (7). pp. 498-504. ISSN 1351-0711, DOI https://doi.org/10.1136/oemed-2012-101321 <https://doi.org/10.1136/oemed-2012-101321>. http://oem.bmj.com/content/70/7/498 10.1136/oemed-2012-101321 |
| spellingShingle | R Medicine Su, A.T. Maeda, S. Fukumoto, J. Darus, A. Hoe, V.C.W. Miyai, N. Isahak, M. Takemura, S. Bulgiba, A. Yoshimasu, K. Miyashita, K. Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title | Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title_full | Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title_fullStr | Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title_full_unstemmed | Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title_short | Dose-response relationship between hand-transmitted vibration and hand-arm vibration syndrome in a tropical environment |
| title_sort | dose response relationship between hand transmitted vibration and hand arm vibration syndrome in a tropical environment |
| topic | R Medicine |
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