Flight attendants report on complaints and high load with respect to trolley handling during short flights of commercial aircraft. In an interdisciplinary experimental study, task conditions were recorded aboard aircraft (10 flights), the working capability (510 persons) and the biometric data of larger samples of German flight attendants (1800 persons) were recorded, and typical push-or-pull maneuvers considering various cabin-floor angles, trolley types and weights were investigated in a specific laboratory set-up (48 task configurations, 25 subjects). Subsequently, lumbar load was quantified by biomechanical model calculations. The disc compression reach up to 3 kN, the sagittal torque up to 130 Nm; thus, lumbar load may be higher than common assessment criteria of literature according to disadvantageous task conditions or individual performance.
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