TY - JOUR
T1 - Resting energy expenditure can be assessed by dual-energy X-ray absorptiometry in women regardless of age and fitness
AU - Usui, C.
AU - Takahashi, E.
AU - Gando, Y.
AU - Sanada, K.
AU - Oka, J.
AU - Miyachi, M.
AU - Tabata, I.
AU - Higuchi, M.
N1 - Funding Information:
We express our appreciation to the subjects for their cooperation in this study. We thank the members of the National Institute of Health and Nutrition for their help in this experiment. This study was supported by a Research Grant for Academic Frontier Projects from the Ministry of Education, Culture, Sports, Science and Technology (05F-02), a Waseda University Grant for Special Research Projects (2005A-932, 2006B-242), Health Sciences Research Grants from the Ministry of Health, Labor and Welfare, Medical Health Care Research Grants from the Consolidated Research Institute for Advanced Science and Medical Care at Waseda University and Research Grants from the Japanese Olympic Committee.
PY - 2009
Y1 - 2009
N2 - Objective:To evaluate the possibility that measurement of the magnitude and distribution of fundamental somatic heat-producing units using dual-energy X-ray absorptiometry (DXA) can be used to estimate resting energy expenditure (REE) in both young and elderly women with different aerobic fitness levels. Subjects and methods: Peak oxygen uptake (VO2 peak) and REEm were directly measured in 116 young (age: 22.3 ± 2.1 years) and 72 elderly (63.3 ± 6.4 years) women. The subjects were divided into four groups according to categories of age and VO2 peak; young: high fitness (YH, n=58); low fitness (YL, n=58); elderly: high fitness (EH, n=37) and low fitness (EL, n=35). Using DXA, systemic and regional body compositions were measured, and REEe was estimated from the sum of tissue organ weights multiplied by corresponding metabolic rate. Results: Although there were remarkable differences in systemic and regional body compositions, no significant differences were observed between REEm and REEe in the four groups. REEe significantly correlated with REEm in elderly as well as young women; the slopes and intercepts of the two regression lines were statistically not different between the elderly and young groups (elderly: y=0.60x+472, r=0.667; young: y=0.78x+250, r=0.798; P<0.001, respectively). A Bland-Altman analysis did not indicate bias in calculation of REE for all the subjects. Conclusion: These results suggest that REE can be estimated from tissue organ components in women regardless of age and aerobic fitness.
AB - Objective:To evaluate the possibility that measurement of the magnitude and distribution of fundamental somatic heat-producing units using dual-energy X-ray absorptiometry (DXA) can be used to estimate resting energy expenditure (REE) in both young and elderly women with different aerobic fitness levels. Subjects and methods: Peak oxygen uptake (VO2 peak) and REEm were directly measured in 116 young (age: 22.3 ± 2.1 years) and 72 elderly (63.3 ± 6.4 years) women. The subjects were divided into four groups according to categories of age and VO2 peak; young: high fitness (YH, n=58); low fitness (YL, n=58); elderly: high fitness (EH, n=37) and low fitness (EL, n=35). Using DXA, systemic and regional body compositions were measured, and REEe was estimated from the sum of tissue organ weights multiplied by corresponding metabolic rate. Results: Although there were remarkable differences in systemic and regional body compositions, no significant differences were observed between REEm and REEe in the four groups. REEe significantly correlated with REEm in elderly as well as young women; the slopes and intercepts of the two regression lines were statistically not different between the elderly and young groups (elderly: y=0.60x+472, r=0.667; young: y=0.78x+250, r=0.798; P<0.001, respectively). A Bland-Altman analysis did not indicate bias in calculation of REE for all the subjects. Conclusion: These results suggest that REE can be estimated from tissue organ components in women regardless of age and aerobic fitness.
UR - http://www.scopus.com/inward/record.url?scp=64249171400&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64249171400&partnerID=8YFLogxK
U2 - 10.1038/sj.ejcn.1602980
DO - 10.1038/sj.ejcn.1602980
M3 - Article
C2 - 18285810
AN - SCOPUS:64249171400
SN - 0954-3007
VL - 63
SP - 529
EP - 535
JO - European Journal of Clinical Nutrition
JF - European Journal of Clinical Nutrition
IS - 4
ER -