Maximal oxygen uptake during cycling is reduced in moving environments : consequencies for motion-induced fatigue
article
In previous studies on physical fatigue during simulated ship movements, the apparent exhaustion of subjects after experimentation suggested that the traditional index of physical workload, oxygen consumption expressed as the percentage of peak oxygen consumption (VO2-peak) measured in a separate graded exercise test (GXT), underestimates workload in a moving environment. In these studies, the GXT was carried out in a stationary environment, as is standard practice. To explain the underestimation, it was hypothesized that VO2-peak might
have been less if the GXT had been carried out in the moving environment. This paper reports on three experimental tests of this hypothesis, performed with a ship motion simulator and aboard a ship at sea. In all three experiments, VO2-peak was indeed signifcantly reduced when the GXT was carried out in the moving
environment. Theoretical reasons for this phenomenon are discussed and investigated, but a clear explanation is still lacking.
have been less if the GXT had been carried out in the moving environment. This paper reports on three experimental tests of this hypothesis, performed with a ship motion simulator and aboard a ship at sea. In all three experiments, VO2-peak was indeed signifcantly reduced when the GXT was carried out in the moving
environment. Theoretical reasons for this phenomenon are discussed and investigated, but a clear explanation is still lacking.
Topics
movementoxygen uptakeGraded exercise testGXTMotionOxygen consumptionWorkloadShipsMoving environmentsOxygencyclingexercise testexhaustionfatiguefemalemathematical computingmotionmovement perceptionoxygen consumptionphysical activityrestshipsimulatorworkloadAnthropometryData CollectionFatigueRespiratory PhysiologyShipsWerkomstandighedenWerkomgevingArbeidsomstandighedenFysieke arbeidsbelastingScheepsbouwSchepenZeescheepvaartVermoeidheidFysieke belasting
TNO Identifier
10439
Source
Ergonomics, 45(3), pp. 186-202.
Pages
186-202
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