Functional consequences of iron supplementation in iron-deficient female cotton mill workers in Beijing, China.
Eighty iron-deficient, nonpregnant female workers were randomly assigned to ferrous sulphate (60 or 120 mg Fe/d) or placebo treatment for 12 wk.
Energy expenditure was estimated during 3 d by heart rate (HR) recording.
Production efficiency (PE) was calculated as the ratio of productivity to energy expenditure.
In the iron-treated group mean hemoglobin (Hb) increased from 114 to 127 g/L (P<0.001), mean serum ferritin increased from 9.7 to 30.0 mug/L (P<0.001), and mean free erythrocyte protoporphyrin decreased from 1.01 to 0.49 mumol/L (P<0.001).
Mean HR at work decreased from 95.5 to 91.1 beats/min (P<0.001), which was inversely correlated with the change in Hb (r=-0.60, P<0.001).
Mots-clés Pascal : Déficit, Fer, Traitement diététique, Régime alimentaire enrichi, Métabolisme énergétique, Productivité, Rythme cardiaque, Homme, Femelle, Chine, Asie, Coton, Industrie, Médecine travail, Appareil circulatoire, Coeur
Mots-clés Pascal anglais : Deficiency, Iron, Diet therapy, Supplemented diet, Energy metabolism, Productivity, Heart rate, Human, Female, China, Asia, Cotton, Industry, Occupational medicine, Circulatory system, Heart
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0436597
Code Inist : 002B26O. Création : 199406.