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Hans-Joachim Jensen
University of Hamburg
Public healthPhysical therapyCrewMedicineEnvironmental health
22Publications
6H-index
179Citations
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Publications 25
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#1Marcus Oldenburg (UHH: University of Hamburg)H-Index: 9
Last. Hans-Joachim Jensen (Fachhochschule Flensburg)H-Index: 6
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INTRODUCTION: During a sea voyage, crew members of vessels are permanently exposed to physical stress caused by noise, vibration and heat. This study aims to describe the extent of the physical influences on board container ships and the resulting stress. METHODS: Up to four scientific investigators accompanied six sea voyages on container ships under German management. Workplace and person-related measurements for noise, vibration and climatic parameters were carried out on the vessels during t...
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#1Marcus Oldenburg (UHH: University of Hamburg)H-Index: 9
#2Hans-Joachim Jensen (UHH: University of Hamburg)H-Index: 6
Background Employees on board must be highly qualified in order to be able to independently meet the different work requirements during the three voyage stages of a ship (port stay, river and sea passage). In this study, the activity profiles of the various occupational groups on container ships are presented according to the voyage stages.
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OBJECTIVES: Good communication between seafarers and their families at home is essential to compensate for the work-related strain experienced on board ships. This paper presents the needs and possibilities for communication with home in seafaring. MATERIAL AND METHODS: In total, 323 seafarers were interviewed during their work assignments on board (the participation rate of 88.5%). The results were stratified by cultural background, family ties, rank groups and shipping routes. RESULTS: The ave...
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Introduction Maritime pilots work in an irregular deployment system (rotation system) with unpredictable work assignments under high levels of physical and mental stress. Fatigue or chronic diseases, e.g. coronary heart disease, peptic ulcers or gastritis can occur as a consequence. This can lead to long-term limitations of pilots’ work ability. The aim of this study is to analyse current stress and strain in maritime pilots. Methods Initially, all German pilots were interviewed with an online q...
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Objectives To estimate the prevalence of sleepiness on duty among day workers and watchkeepers on board. Design Cross-sectional survey in a maritime field study. Setting 10 shipping companies with container vessels under German management. Participants The whole crew (75 day workers and 123 watchkeepers) during 18 voyages on 18 different container ships. Outcome measures Sleepiness on duty and efficiency of sleep using pupillometry (in a cross-shift design) and the SenseWear armband activity mon...
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#1Marcus Oldenburg (UHH: University of Hamburg)H-Index: 9
#2Hans-Joachim Jensen (UHH: University of Hamburg)H-Index: 6
ABSTRACTSeafarers working in maritime settings are affected by a great number of psychosocial stressors. The testing of cortisol in saliva is a well-established method for judging the individual strain. Therefore, this study aims to assess the crews’ strain on container ships on the basis of this parameter, taking occupational groups and the three voyage episodes of the vessel into account (stay at port, river passage and sea passage). One scientist accompanied 22 sea voyages and examined 304 cr...
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#2Birgit-Christiane Zyriax (UHH: University of Hamburg)H-Index: 4
Last. Marcus OldenburgH-Index: 9
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Background According to internal observations within a German shipping company, obvious risk-behaviour persists among the crew members coming from the Pacific Island State of Kiribati and representing a large part of the crew aboard merchant vessels of this company. These observations were related to excessive eating habits. This study aims to assess the cardiovascular risk among seafarers and to compare lifestyle factors between Kiribati and European crew members.
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In order to determine the health status of seafarers, questionnaires are frequently applied or medical/ /psychological examinations conducted ashore, for example, in the form of medical fitness examinations or simulator training. In such a survey design, the occupational influences and the individual reaction cannot be ascertained. However, these aspects are especially important in the maritime context as employees on board are often exposed to the typical shipping-related stressors in the workp...
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#1Marcus Oldenburg (UHH: University of Hamburg)H-Index: 9
#2Hans-Joachim Jensen (UHH: University of Hamburg)H-Index: 6
Background A sea voyage is characterized by a variety of work requirements for the ship's crew, basically reflected in three voyage episodes: port stay, river passage and sea passage. The primary aim of this study was to compare stress and strain amongst a sample of merchant seafarers across these three voyage episodes. Methods In a cross-sectional maritime field study, 323 sailors on 22 container ships were biometrically surveyed and completed a questionnaire. In addition, a survey of energy ex...
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The aim of the present study is to assess the extent to which seafarers had been affected by severe mental stress situations and what possible psychological effects they may have. During the voyages of 22 German ships, a psychologically trained investigator interviewed 323 seafarers about severe mental stress or potentially traumatic events on board (participation rate 88.5%). Furthermore, a psychologist conducted semi-standardized interviews in 12 shipping companies and in 8 stations of the Ger...
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