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Ricardo A. Tanhoffer, Aldre I.P. Tanhoffer, Jacqueline Raymond, Nathan A. Johnson, Andrew P. Hills and Glen M. Davis

Background:

The objective of this study was to determine whether doubly labeled water (DLW) and a multi-sensor armband (SWA) could detect the variation in energy expenditure incurred by a period of increased exercise (EXE) versus a period of high sedentary activity (SED), in individuals with spinal cord injury (SCI).

Methods:

Eight participants with SCI were submitted to 2 testing periods of energy expenditure assessment: 1) a 14-day phase during which sedentary living conditions were imposed and 2) a 14-day phase during which an exercise training intervention was employed. For each phase, total daily energy expenditure (TDEE) and physical activity energy expenditure (PAEE) were measured by DLW and SWA.

Results:

Mean TDEE assessed by DLW, was significantly higher during EXE versus SED (11,605 ± 2151 kJ·day-1 and 10,069 ± 2310 kJ·day-1). PAEE predicted by DLW was also significantly higher during EXE versus SED (5422 ± 2240 kJ·day-1 and 3855 ± 2496 kJ·day-1). SWA-predicted PAEE significantly underestimated PAEE measured by the DLW during SED and EXE.

Conclusion:

DLW is sensitive to detect variation in within-individual energy expenditure during voluntary increase in physical activity in individuals with SCI. SWA failed to detect statistically significant variations in energy expenditure between periods of high versus low activity in SCI.

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Hiroyuki Sagayama, Makiko Toguchi, Jun Yasukata, Kazunari Yonaha, Yasuki Higaki and Hiroaki Tanaka

Institute of Health and Nutrition as follows: [0.1238 + (0.0481 × body weight (kg)) + (0.0234 × height (cm)) − (0.0138 × age (years)) − 0.5473] × 1,000/4.186 ( Ministry of Health, Labour and Welfare, 2015 ). Percent body fat was calculated using the two-compartment model using a stable isotope dilution

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Francesco Campa, Catarina N. Matias, Elisabetta Marini, Steven B. Heymsfield, Stefania Toselli, Luís B. Sardinha and Analiza M. Silva

different sports disciplines and practices. 3 , 16 – 20 In particular, it has shown to be able to identify changes of body fluids after an exercise session, compared with plasma osmolarity (a hydration biomarker), stable isotope dilution, and body weight changes. 19 , 21 However, to the best of our

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Kirsty A. Fairbairn, Ingrid J.M. Ceelen, C. Murray Skeaff, Claire M. Cameron and Tracy L. Perry

.0000058441.94520.32 Maunsell , Z. , Wright , D.J. , & Rainbow , S.J. ( 2005 ). Routine isotope-dilution liquid chromatography-tandem mass spectrometry assay for simultaneous measurement of the 25-hydroxy metabolites of vitamins D2 and D3 . Clinical Chemistry, 51 ( 9 ), 1683 – 1690 . PubMed doi:10