OXYGENCONSUMPTIONPREDICTIONMODELFORINDONESIANMALEWORKERS

摘要：

Whiletheabilitytoassessworkersphysiologicalcostduringworkiscritical, appropriateevaluationmethodsspecificallydevelopedforIndonesianworkersarefairlyscarce.Thisisapreliminarytwo-phasestudyaimingatdevelopinganenergycostpredictionmodelfortheIndonesianmaleworkers.Inthefirstphase, themodelwasdevelopedbasedondatacollectedfromsixteenmaleworkers(20-25yearsofage).Bothanthropometricanddemographicdatawereobtainedpriortothecommencementoftheexperiment.Eachparticipantwaslateraskedtorunonatreadmillfor10minutesat25,50, and75％oftheindividualpeakrunningspeed,consecutively.HeartrateandO2consumptionweremeasuredthroughoutthedurationoftheexperiment,withmeansduringthelastminute(ofeachspeed)usedformodeldevelopment.Theenergycostpredictionmodelwaslaterestablished,inwhichO2consumption(inl/min)canbeexpressedasafunctionoftheindividualsheartrate,weight, andage.Theresultingmodelwasexaminedfurtherinthesecondphase,inwhichtheamountofoxygenconsumed(measureddirectly)wascomparedtothatpredictedbythemodel.Forthispurpose,10participants(maleworkersbetweentheagesof20-25yearsold)wererecruited.Theywereaskedtoperformtwodifferenttasksforfiveminuteseach,includingjoggingonthetreadmillatself-selectspeedorasimplemanualmaterialhandlingactivity.HeartrateandO2consumptionwerecontinuouslymeasuredduringthelastminuteofeachtask.Pairedt-testwasusedtoindicateifdifferencesexisted(p<0.05)betweendirectmeasurementofO2consumptionandthosedeterminedbythepredictionmodel.Resultsfromthissecondphaseshowedsignificantdifferencesduringthemanualmaterialhandlingactivity,butnotduringthejoggingactivity.Thedifferencescouldbeexplainedbythefactthat,comparedtotreadmillexercise, manualhandlingmayinvolvesubstantiallydifferentactivemusclegroups.ThisstudydemonstratedthatenergycostforalimitedsampleofIndonesianworkerscanbepredictedbyasimplelinearmodel, giventhattheindividualsheartrate,height, andageareknown.Theapplicabilityofthemodel,however,couldbehamperedifthecharacteristicsofthetasksbeingevaluatedaredifferentfromthosefoundduringjoggingtasks.However, theuseofthemodelasaroughestimateofdemandsduringindustrialactivitiescanstillbeofvalue.

关键词： metaboliccost O2consumption heartrate predictionmodel

作者: HardiantoIridiastadi AdipradanaSatriawan HermanR.Soetisna

作者单位: FacultyofIndustrialTechnologyInstitutTeknologiBandungIndonesia

会议类型: 国际会议

会议名称: 17th World Congress on Ergonomics(第十七届国际人类工效学大会)

会议地点: 北京

会议语种:英文

页码: 1-3

在线出版日期: 2009-08-09（万方平台首次上网日期，不代表论文的发表时间）