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Resting metabolic rate, body composition and thyroid hormones. Short term effects of very low calorie diet.
Horm Metab Res. 1990 Dec; 22(12):632-5.HM

Abstract

27 obese women (relative body weight 191 +/- 27%), aged 35 +/- 11, underwent a 15 day very low calorie diet (VLCD: 1337 kJ/day). Mean body weight loss was 6 +/- 1.5 kg. Resting metabolic rate (RMR), measured by indirect calorimetry, showed a significant decrease both in absolute values (from 1793 +/- 225 to 1569 +/- 231 kcal/day; P less than 0.001), and in keal/kg body weight/day (from 17 +/- 2, to 16 +/- 2, P less than 0.001). Serum triiodothyronine (T3) significantly decreased from 1.1 +/- 0.2 to 1 +/- 0.2 microgram/1 (P less than 0.001). Before VLCD the differences between measured RMR and theoretical RMR (RMR-T) were not significant. After VLCD RMR values were significantly (P less than 0.001) lower than RMR-T. It was concluded that fat-free mass loss, combined with periferic thyroxin (T4) reduced monodeiodination in its more active form mainly due to low calorie intake T3 could be responsible for the important reduction observed in the resting metabolic rate.

Authors+Show Affiliations

Cavallo E
Institute of Clinica Medica, University of Verona, Italy.
Armellini F
No affiliation info available
Zamboni M
No affiliation info available
Vicentini R
No affiliation info available
Milani MP
No affiliation info available
Bosello O
No affiliation info available

MeSH

AdultBasal MetabolismBody CompositionDiet, ReducingEnergy IntakeFemaleHumansObesityThyrotropinThyroxineTriiodothyronineWeight Loss

Pub Type(s)

Journal Article

Language

eng

PubMed ID

2076860

Citation

Cavallo, E, et al. "Resting Metabolic Rate, Body Composition and Thyroid Hormones. Short Term Effects of Very Low Calorie Diet." Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme, vol. 22, no. 12, 1990, pp. 632-5.
Cavallo E, Armellini F, Zamboni M, et al. Resting metabolic rate, body composition and thyroid hormones. Short term effects of very low calorie diet. Horm Metab Res. 1990;22(12):632-5.
Cavallo, E., Armellini, F., Zamboni, M., Vicentini, R., Milani, M. P., & Bosello, O. (1990). Resting metabolic rate, body composition and thyroid hormones. Short term effects of very low calorie diet. Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme, 22(12), 632-5.
Cavallo E, et al. Resting Metabolic Rate, Body Composition and Thyroid Hormones. Short Term Effects of Very Low Calorie Diet. Horm Metab Res. 1990;22(12):632-5. PubMed PMID: 2076860.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Resting metabolic rate, body composition and thyroid hormones. Short term effects of very low calorie diet. AU - Cavallo,E, AU - Armellini,F, AU - Zamboni,M, AU - Vicentini,R, AU - Milani,M P, AU - Bosello,O, PY - 1990/12/1/pubmed PY - 1990/12/1/medline PY - 1990/12/1/entrez SP - 632 EP - 5 JF - Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme JO - Horm Metab Res VL - 22 IS - 12 N2 - 27 obese women (relative body weight 191 +/- 27%), aged 35 +/- 11, underwent a 15 day very low calorie diet (VLCD: 1337 kJ/day). Mean body weight loss was 6 +/- 1.5 kg. Resting metabolic rate (RMR), measured by indirect calorimetry, showed a significant decrease both in absolute values (from 1793 +/- 225 to 1569 +/- 231 kcal/day; P less than 0.001), and in keal/kg body weight/day (from 17 +/- 2, to 16 +/- 2, P less than 0.001). Serum triiodothyronine (T3) significantly decreased from 1.1 +/- 0.2 to 1 +/- 0.2 microgram/1 (P less than 0.001). Before VLCD the differences between measured RMR and theoretical RMR (RMR-T) were not significant. After VLCD RMR values were significantly (P less than 0.001) lower than RMR-T. It was concluded that fat-free mass loss, combined with periferic thyroxin (T4) reduced monodeiodination in its more active form mainly due to low calorie intake T3 could be responsible for the important reduction observed in the resting metabolic rate. SN - 0018-5043 UR - https://www.unboundmedicine.com/medline/citation/2076860/Resting_metabolic_rate_body_composition_and_thyroid_hormones__Short_term_effects_of_very_low_calorie_diet_ DB - PRIME DP - Unbound Medicine ER -