Proportion and number of upper-extremity musculoskeletal disorders attributable to the combined effect of biomechanical and psychosocial risk factors in a working population

The objective of this paper is to assess the combined effect of occupational biomechanical and psychosocial risk factors on the incidence of work-related upper-extremity musculoskeletal disorders (UEMSDs) and estimate the proportion and number of incident cases attributable to these risk factors in a working population. Using data from the French COSALI (COhorte des SAlariés LIgériens) cohort (enrolment phase: 2002-2005; follow-up phase: 2007-2010), a complete case analysis including 1246 workers (59% men, mean age: 38 years ± 8.6 at baseline) was performed. All participants underwent a standardized clinical examination at enrolment and 1611 workers were re-examined at follow-up. Population attributable fractions and the number of UEMSD cases attributable to occupational risk factors were calculated. During follow-up, 139 UEMSD cases were diagnosed, representing an estimated 129,320 projected incident UEMSD cases in the working population. After adjusting for personal factors, in model 1, 8664 cases (6.7%) were attributable to low social support, 19,010 (14.7%) to high physical exertion, and 20,443 (15.8%) to co-exposure to both factors. In model 2, 16,294 (12.6%) cases were attributable to low social support, 6983 (5.4%) to posture with arms above shoulder level, and 5043 (3.9%) to co-exposure to both factors. Our findings suggest that many cases of UEMSD could be potentially prevented by multidimensional interventions aimed at reducing exposure to high physical exertion and improving social support at work

Late-Holocene climatic variability south of the Alps as recorded by lake-level fluctuations at Lake Ledro, Trentino, Italy

International audienceA lake-level record for the late Holocene at Lake Ledro (Trentino, northeastern Italy) is presented. It is based on the sediment and pollen analysis of a 1.75 m high stratigraphic section observed on the southern shore (site Ledro I) and a 3.2 m long sediment core taken from a littoral mire on the southeastern shore (site Ledro II). The chronology is derived from 15 radiocarbon dates and pollen stratigraphy. The late-Holocene composite record established from these two sediment sequences gives evidence of centennial-scale fluctuations with highstands at c. 3400, 2600, 1700, 1200 and 400 cal. BP, in agreement with various palaeohydro-logical records established in central and northern Italy, as well as north of the Alps. In addition, high lake-level conditions at c. 2000 cal. BP may be the equivalent of stronger river discharge observed at the same time in Central Italy's rivers. In agreement with the lake-level record of Accesa (Tuscany), the Ledro record also suggests a relatively complex palaeohydrological pattern for the period around 4000 cal. BP. On a millennial scale, sediment hiatuses observed in the lower part of the Ledro I sediment sequence indicate that, except for a high-stand occurring just after 7500 cal. BP, lower lake levels generally prevailed rather before c. 4000 cal. BP than afterwards. Finally, the lake-level data obtained at Lake Ledro indicate that the relative continuity of settlements in humid areas of northern Italy during the Bronze Age (in contrast to their general abandonment north of the Alps between c. 3450 and 3150 cal. BP), does not reflect different regional patterns of climatic and palaeohy-drological conditions. In contrast, the rise in lake level dated to c. 3400 cal. BP at Ledro appears to coincide with a worldwide climate reversal, observed in both the hemispheres, while palaeoenvironmental and archaeological data collected at Lake Ledro may suggest, as a working hypothesis, a relative emancipation of proto-historic societies from climatic conditions

A Boat Mill Discovered in the Doubs River, at Sermesse, France

International audienc

Les opérations prospections inventaires menés par l’UMR 6249 Chrono-environnement en Bourgogne : résultats de la campagne 2013

National audienc

Organisation of the mining exploitation on the Altenberg medieval sector (Sainte-Marie-aux-Mines; France: the mine "Sainte-Barbe", an emblematic place

International audienceThe Altenberg is one of the three mining sectors in Sainte-Marie-aux-Mines (Vosges, France). It is the only one which was exploited before the Modern Age: it has been demonstrated that the mining exploitation did not stop from the 9th c. to the 17th c. Hundreds of archaeological sites can be found along the 4 km vein system (galena, tetrahedrite): remains of ancient mines, workshops and houses. Among them, in the middle of the sector, the mine Sainte-Barbe is both a point of convergence for surroundings exploitations and a representative example of the Altenberg evolution. The importance of the production in this mine can surely explain the development of infrastructure facilities used by several extraction sites around. Moreover, the 11th-12th c. smelting place, the 15th c. ore dressing place and the 16th c. smith show the increasing distance between mines and workshops, which are progressively set at the foot of the slopes, near the rivers

The History of La Charité-sur-Loire Bridges (France, Burgundy and Center Regions), From the 13th Century to the 20th Century

International audienc

Organisation of the mining exploitation on the Altenberg medieval sector (Sainte-Marie-aux-Mines; France: the mine "Sainte-Barbe", an emblematic place

International audienceThe Altenberg is one of the three mining sectors in Sainte-Marie-aux-Mines (Vosges, France). It is the only one which was exploited before the Modern Age: it has been demonstrated that the mining exploitation did not stop from the 9th c. to the 17th c. Hundreds of archaeological sites can be found along the 4 km vein system (galena, tetrahedrite): remains of ancient mines, workshops and houses. Among them, in the middle of the sector, the mine Sainte-Barbe is both a point of convergence for surroundings exploitations and a representative example of the Altenberg evolution. The importance of the production in this mine can surely explain the development of infrastructure facilities used by several extraction sites around. Moreover, the 11th-12th c. smelting place, the 15th c. ore dressing place and the 16th c. smith show the increasing distance between mines and workshops, which are progressively set at the foot of the slopes, near the rivers

Organisation of the mining exploitation on the Altenberg medieval sector (Sainte-Marie-aux-Mines; France: the mine "Sainte-Barbe", an emblematic place

International audienceThe Altenberg is one of the three mining sectors in Sainte-Marie-aux-Mines (Vosges, France). It is the only one which was exploited before the Modern Age: it has been demonstrated that the mining exploitation did not stop from the 9th c. to the 17th c. Hundreds of archaeological sites can be found along the 4 km vein system (galena, tetrahedrite): remains of ancient mines, workshops and houses. Among them, in the middle of the sector, the mine Sainte-Barbe is both a point of convergence for surroundings exploitations and a representative example of the Altenberg evolution. The importance of the production in this mine can surely explain the development of infrastructure facilities used by several extraction sites around. Moreover, the 11th-12th c. smelting place, the 15th c. ore dressing place and the 16th c. smith show the increasing distance between mines and workshops, which are progressively set at the foot of the slopes, near the rivers

Prospections aériennes et terrestres en Bourgogne. Résultats de la campagne 2013

National audienc

Upper-extremity musculoskeletal disorders: how many cases can be prevented? Estimates from the COSALI cohort

International audienceObjective This study aimed to estimate the proportion and number of incident upper-extremity musculoskeletal disorders (UEMSD) cases attributable to occupational risk factors in a working population.Methods Between 2002−2005, occupational physicians randomly selected 3710 workers, aged 20–59, from the Pays de la Loire (PdL) region. All participants underwent a standardized clinical examination. Between 2007−2010, 1611 workers were re-examined. This study included 1246 workers who were free of six main clinically diagnosed UEMSD at baseline but were diagnosed with at least one of these UEMSD at follow-up [59% of men, mean age: 38 (standard deviation 8.6) years]. Relative risks and population-attributable fractions (PAF) were calculated using Cox multivariable models with equal follow-up time and robust variance. The total number of incident UEMSD in the PdL region was estimated after adjustment of the sample weights using 2007 census data. The estimated number of potentially avoidable UEMSD was calculated by multiplying PAF by the total number of incident UEMSD in PdL.Results At follow-up, 139 new cases of UEMSD (11% of the study sample) were diagnosed. This represented an estimated 129 320 incident cases in the PdL in 2007. Following adjustment for personal factors, 26 381 (20.4% of all incident UEMSD) were attributable to high physical exertion, 16 682 (12.9%) to low social support, and 8535 (6.6%) to working with arms above shoulder level.Conclusions A large number and important proportion of incident UEMSD may be preventable by reducing work exposures to physical exertion and working with arms above shoulder level as well as improving social support from co-workers/supervisors