Volume 24 Issue 4
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LIU JianMin, PIAO JianHua, SUN Rui, TIAN Ying, YANG XiaoGuang. Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China[J]. Biomedical and Environmental Sciences, 2011, 24(4): 357-363. doi: 10.3967/0895-3988.2011.04.006
Citation: LIU JianMin, PIAO JianHua, SUN Rui, TIAN Ying, YANG XiaoGuang. Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China[J]. Biomedical and Environmental Sciences, 2011, 24(4): 357-363. doi: 10.3967/0895-3988.2011.04.006

Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China

doi: 10.3967/0895-3988.2011.04.006
Funds:  the National Natural Science Foundation of China(30771811)%the Scientific Research Foundation of Hebei Medical University for the Young Core Instructor(30900143)
  • Objective The present study aimed to evaluate the accuracy of the factorial method for estimating energy needs in individuals living in China.Methods Sixteen healthy female adults aged 22.1+1.2 years with a body mass index (kg/m2) of 20.4+1.7 were selected as subjects.In free-living conditions,energy expenditure (EE) was determined by using the factorial method.At the same time,the doubly labeled water method (DLW) was also used to measure energy expenditure of the subjects and served as the criterion method.EE predicted by the factorial method (EEfactorlal) was compared with the simultaneous measurement of EE by the validated DLW method (EEDLW).Results There was excellent agreement between EEfactorlal (7.46+0.59 M J/d) and EEDLW (7.64 + 0.49 MJ/d),with a difference of -2.6+4.9% (-0.18+0.36 MJ/d).No significant differences were found between the two methods.EEfactorial was highly correlated with EEDLW (r=0.795,P<0.001) and a good agreement for individuals was found by using the Bland and Altman test.Conclusion The factorial method gives satisfactory estimates of EE for both groups and individuals living in China.
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Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China

doi: 10.3967/0895-3988.2011.04.006
Funds:  the National Natural Science Foundation of China(30771811)%the Scientific Research Foundation of Hebei Medical University for the Young Core Instructor(30900143)

Abstract: Objective The present study aimed to evaluate the accuracy of the factorial method for estimating energy needs in individuals living in China.Methods Sixteen healthy female adults aged 22.1+1.2 years with a body mass index (kg/m2) of 20.4+1.7 were selected as subjects.In free-living conditions,energy expenditure (EE) was determined by using the factorial method.At the same time,the doubly labeled water method (DLW) was also used to measure energy expenditure of the subjects and served as the criterion method.EE predicted by the factorial method (EEfactorlal) was compared with the simultaneous measurement of EE by the validated DLW method (EEDLW).Results There was excellent agreement between EEfactorlal (7.46+0.59 M J/d) and EEDLW (7.64 + 0.49 MJ/d),with a difference of -2.6+4.9% (-0.18+0.36 MJ/d).No significant differences were found between the two methods.EEfactorial was highly correlated with EEDLW (r=0.795,P<0.001) and a good agreement for individuals was found by using the Bland and Altman test.Conclusion The factorial method gives satisfactory estimates of EE for both groups and individuals living in China.

LIU JianMin, PIAO JianHua, SUN Rui, TIAN Ying, YANG XiaoGuang. Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China[J]. Biomedical and Environmental Sciences, 2011, 24(4): 357-363. doi: 10.3967/0895-3988.2011.04.006
Citation: LIU JianMin, PIAO JianHua, SUN Rui, TIAN Ying, YANG XiaoGuang. Evaluation of the Factorial Method for Determination of Energy Expenditure in 16 Young Adult Women Living in China[J]. Biomedical and Environmental Sciences, 2011, 24(4): 357-363. doi: 10.3967/0895-3988.2011.04.006

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