We used bioelectrical impedance analysis (BIA) as an exploratory tool to monitor the changes in body composition induced by a short-term (3-wk) weight reduction (energy-restricted diet, moderate aerobic exercise conditioning and psychological counselling) in 175 highly obese subjects (body mass index, BMI=41.7+/-5.8 kg/m(2)). The decrease in weight and BMI after the weight reduction program was 3.4% (geometric mean, p<0.0001) and 3.7+/-1.3 kg/m(2) (mean+/-SD,p<0.0001), respectively, Bioelectrical impedance (Z) increased of about the same value at each of the measured frequencies (from 6+/-10% at 5 kHz to 5+/-9% at 100 kHz, mean+/-SD, p<0.0001), A statistically significant increase in Z(5):Z(100) was also seen (p<0.0001), but its clinical significance is questionable owing to its low absolute value (<1%). Taken together, these data suggest that no clinically relevant change in body water distribution occurred in our subjects as a result of the weight reduction program. However, the changes in Z did not satisfactorily predict the changes in anthropometric dimensions despite the evidence of a substantial association between Z and anthropometry both before and after the weight reduction program, Thus, accurate predictions of body composition changes in obese subjects may require more than two BIA measurements so as to have a better description of the weight-losing process.

Changes of bioelectrical impedance after a body weight reduction program in highly obese subjects / Sartorio, A; Conte, G; Morini, P; Battistini, Nino Carlo; Faglia, G; Bedogni, G.. - In: DIABETES, NUTRITION & METABOLISM. - ISSN 0394-3402. - STAMPA. - 13:4(2000), pp. 186-191.

Changes of bioelectrical impedance after a body weight reduction program in highly obese subjects

BATTISTINI, Nino Carlo;
2000

Abstract

We used bioelectrical impedance analysis (BIA) as an exploratory tool to monitor the changes in body composition induced by a short-term (3-wk) weight reduction (energy-restricted diet, moderate aerobic exercise conditioning and psychological counselling) in 175 highly obese subjects (body mass index, BMI=41.7+/-5.8 kg/m(2)). The decrease in weight and BMI after the weight reduction program was 3.4% (geometric mean, p<0.0001) and 3.7+/-1.3 kg/m(2) (mean+/-SD,p<0.0001), respectively, Bioelectrical impedance (Z) increased of about the same value at each of the measured frequencies (from 6+/-10% at 5 kHz to 5+/-9% at 100 kHz, mean+/-SD, p<0.0001), A statistically significant increase in Z(5):Z(100) was also seen (p<0.0001), but its clinical significance is questionable owing to its low absolute value (<1%). Taken together, these data suggest that no clinically relevant change in body water distribution occurred in our subjects as a result of the weight reduction program. However, the changes in Z did not satisfactorily predict the changes in anthropometric dimensions despite the evidence of a substantial association between Z and anthropometry both before and after the weight reduction program, Thus, accurate predictions of body composition changes in obese subjects may require more than two BIA measurements so as to have a better description of the weight-losing process.
2000
13
4
186
191
Changes of bioelectrical impedance after a body weight reduction program in highly obese subjects / Sartorio, A; Conte, G; Morini, P; Battistini, Nino Carlo; Faglia, G; Bedogni, G.. - In: DIABETES, NUTRITION & METABOLISM. - ISSN 0394-3402. - STAMPA. - 13:4(2000), pp. 186-191.
Sartorio, A; Conte, G; Morini, P; Battistini, Nino Carlo; Faglia, G; Bedogni, G.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/7089
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 10
social impact