Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models.
OBJECTIVES: To investigate changes in body composition and the validity of the leg-to-leg bioimpedance (LTL) method to measure body fat during active weight loss (WL) and weight regain (WR). DESIGN: Longitudinal, 12-week weight loss intervention (3.3-3.8 MJ/day) and subsequent follow-up at 1 year. S...
| Prif Awduron: | , , , , , |
|---|---|
| Fformat: | Journal article |
| Iaith: | English |
| Cyhoeddwyd: |
2007
|
| _version_ | 1826264969320071168 |
|---|---|
| author | Jebb, SA Siervo, M Murgatroyd, P Evans, S Frühbeck, G Prentice, A |
| author_facet | Jebb, SA Siervo, M Murgatroyd, P Evans, S Frühbeck, G Prentice, A |
| author_sort | Jebb, SA |
| collection | OXFORD |
| description | OBJECTIVES: To investigate changes in body composition and the validity of the leg-to-leg bioimpedance (LTL) method to measure body fat during active weight loss (WL) and weight regain (WR). DESIGN: Longitudinal, 12-week weight loss intervention (3.3-3.8 MJ/day) and subsequent follow-up at 1 year. SUBJECTS: Fifty-eight adult women aged between 24 and 65 years (mean age: 46.8+/-8.9 years) and with a body mass index (BMI) > or =25 kg/m(2) (mean BMI: 31.6+/-2.5 kg/m(2), range=26.0-48.2 kg/m(2)) participated in the study. MEASUREMENTS: Fat mass (FM) was measured at baseline, 12 weeks, 24 weeks and 52 weeks using three- and four-compartment (4-C) models, air displacement plethysmography (ADP), deuterium dilution - total body water (TBW), dual-energy X-ray absorptiometry (DXA), skinfold thickness (SFT), tetrapolar bioelectrical impedance analysis (T-BIA) and LTL. RESULTS: At the end of the weight loss programme, subjects lost 9.9+/-3.5 kg weight (P<0.001) and 7.6+/-0.5 kg fat (P<0.001) but after 1 year they had regained 4.9+/-3.7 kg of weight and 3.7+/-2.9 kg of fat. The 4-C model showed that FM and TBW accounted for 76.2 and 23.6% of the loss in body mass and 81.8 and 17.7% of the tissue accrued during weight regain, respectively. The estimate of body fat change by LTL relative to multi-compartment models (WL(bias+/-2s.d.)=0.51+/-3.26 kg; WR(bias+/-2s.d.)=-0.25+/-2.30 kg) was similar to ADP, DXA and TBW in both phases but it was better than T-BIA (WL(bias+/-2s.d.)=0.17+/-7.90 kg; WR(bias+/-2s.d.)=-0.29+/-7.59 kg) and skinfold thickness (WL(bias+/-2s.d.)=2.68+/-6.68 kg; WR(bias+/-2s.d.)=-0.84+/-3.80 kg). CONCLUSIONS: Weight loss and regain were associated with minimal changes in lean tissue as measured using multi-compartment models. The LTL system is a useful method to measure body composition changes during clinical weight management programmes. |
| first_indexed | 2024-03-06T20:16:20Z |
| format | Journal article |
| id | oxford-uuid:2c4503c6-d44c-48b7-97cf-92fa93afbcc7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:16:20Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:2c4503c6-d44c-48b7-97cf-92fa93afbcc72022-03-26T12:35:56ZValidity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2c4503c6-d44c-48b7-97cf-92fa93afbcc7EnglishSymplectic Elements at Oxford2007Jebb, SASiervo, MMurgatroyd, PEvans, SFrühbeck, GPrentice, AOBJECTIVES: To investigate changes in body composition and the validity of the leg-to-leg bioimpedance (LTL) method to measure body fat during active weight loss (WL) and weight regain (WR). DESIGN: Longitudinal, 12-week weight loss intervention (3.3-3.8 MJ/day) and subsequent follow-up at 1 year. SUBJECTS: Fifty-eight adult women aged between 24 and 65 years (mean age: 46.8+/-8.9 years) and with a body mass index (BMI) > or =25 kg/m(2) (mean BMI: 31.6+/-2.5 kg/m(2), range=26.0-48.2 kg/m(2)) participated in the study. MEASUREMENTS: Fat mass (FM) was measured at baseline, 12 weeks, 24 weeks and 52 weeks using three- and four-compartment (4-C) models, air displacement plethysmography (ADP), deuterium dilution - total body water (TBW), dual-energy X-ray absorptiometry (DXA), skinfold thickness (SFT), tetrapolar bioelectrical impedance analysis (T-BIA) and LTL. RESULTS: At the end of the weight loss programme, subjects lost 9.9+/-3.5 kg weight (P<0.001) and 7.6+/-0.5 kg fat (P<0.001) but after 1 year they had regained 4.9+/-3.7 kg of weight and 3.7+/-2.9 kg of fat. The 4-C model showed that FM and TBW accounted for 76.2 and 23.6% of the loss in body mass and 81.8 and 17.7% of the tissue accrued during weight regain, respectively. The estimate of body fat change by LTL relative to multi-compartment models (WL(bias+/-2s.d.)=0.51+/-3.26 kg; WR(bias+/-2s.d.)=-0.25+/-2.30 kg) was similar to ADP, DXA and TBW in both phases but it was better than T-BIA (WL(bias+/-2s.d.)=0.17+/-7.90 kg; WR(bias+/-2s.d.)=-0.29+/-7.59 kg) and skinfold thickness (WL(bias+/-2s.d.)=2.68+/-6.68 kg; WR(bias+/-2s.d.)=-0.84+/-3.80 kg). CONCLUSIONS: Weight loss and regain were associated with minimal changes in lean tissue as measured using multi-compartment models. The LTL system is a useful method to measure body composition changes during clinical weight management programmes. |
| spellingShingle | Jebb, SA Siervo, M Murgatroyd, P Evans, S Frühbeck, G Prentice, A Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title | Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title_full | Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title_fullStr | Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title_full_unstemmed | Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title_short | Validity of the leg-to-leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women: a comparison with multi-compartment models. |
| title_sort | validity of the leg to leg bioimpedance to estimate changes in body fat during weight loss and regain in overweight women a comparison with multi compartment models |
| work_keys_str_mv | AT jebbsa validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels AT siervom validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels AT murgatroydp validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels AT evanss validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels AT fruhbeckg validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels AT prenticea validityofthelegtolegbioimpedancetoestimatechangesinbodyfatduringweightlossandregaininoverweightwomenacomparisonwithmulticompartmentmodels |