Relationships of low back outcomes to internal spinal load: a prospective cohort study of professional drivers

被引:28
作者
Bovenzi, Massimo [1 ]
Schust, Marianne [2 ]
Menzel, Gerhard [2 ]
Prodi, Andrea [1 ]
Mauro, Marcella [1 ]
机构
[1] Univ Trieste, Dept Med Sci, Clin Unit Occupat Med, Ctr Tumori, I-34129 Trieste, Italy
[2] Fed Inst Occupat Safety & Hlth, Unit Expt Res Occupat Hlth, D-10317 Berlin, Germany
关键词
Driving; Exposure-response relationships; External dose; Internal spinal dose; Low back disorders; Whole body vibration; WHOLE-BODY VIBRATION; FINITE-ELEMENT MODELS; PSYCHOSOCIAL FACTORS; RISK-FACTORS; EUROPEAN DRIVERS; PAIN; WORK; EXPOSURE; FORCES; SHEAR;
D O I
10.1007/s00420-014-0976-z
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
To investigate the relationships between low back symptoms and alternative measures of external dose and internal spinal dose in professional drivers exposed to whole body vibration (WBV). The occurrence of low back symptoms was investigated in a cohort of 537 drivers over a 2-year follow-up period. Low back pain (LBP), individual characteristics, and work-related risk factors were investigated with a structured questionnaire. Exposure to WBV was evaluated by means of measures of external dose (daily vibration exposure in terms of either equivalent continuous acceleration over an 8-h period (A(8)) or vibration dose value according to the EU Directive on mechanical vibration) and measures of internal lumbar load (daily compressive dose S (ed) and risk factor R according to ISO/CD 2631-5 2014). In the drivers' cohort, the cumulative incidence of 12-month low back outcomes was 16.8 % for LBP, 9.3 % for chronic LBP, and 21.8 % for sciatic pain. The measures of internal spinal load were better predictors of the occurrence of low back symptoms than the measures of daily vibration exposure. A twofold increase in the risk estimates for low back outcomes was found in the upper quartile of the R factor (0.41-0.72 units) compared to the lower one (0.07-0.19 units). In this prospective cohort study, measures of internal spinal dose performed better than measures of daily vibration exposure (external dose) for the prediction of low back outcomes in professional drivers. The ISO boundary values of the risk factor R for low and high probabilities of adverse health effects on the lumbar spine tend to underestimate the health risk in professional drivers.
引用
收藏
页码:487 / 499
页数:13
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