2012 ©
Journal Publication
Title of Article Effect of time of day on height loss response variability in asymptomatic participants on two consecutive days 
Date of Acceptance 27 August 2019 
     Title of Journal Ergonomics 
     Standard ISI 
     Institute of Journal Informa UK Limited, trading as Taylor & Francis Group 
     Volume 62 
     Issue 12 
     Year of Publication 2019 
     Page 1542–1550 
     Abstract Ergonomists measure height loss in relation to loads imposed on the spine. It is difficult to interpret whether height loss responses recorded on different days are accurate due to natural daily fluctuations in height loss and measurement variability. The objective of this research was to investigate whether the variability of height loss in the sitting position is affected by time of day and to analyse day-to-day variability in asymptomatic participants. Fifty asymptomatic participants attended two sessions (morning and afternoon) of stadiometry testing on four separate days. The results showed that a variability of height loss response changes in excess of 0.886mm in morning and 1.128mm in afternoon between days indicates that an intervention itself has influenced height loss. Future investigations on height loss in sitting should take these results into consideration to confidently state that an intervention has influenced height loss response at each time of day. 
     Keyword Variability; height loss; stadiometry; diurnal variation 
597090002-5 Mr. PONGSATORN SAIKLANG [Main Author]
Associated Medical Sciences Doctoral Degree

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