High level of free-living energy expenditure in rural Gambian men: lack of behavioural adaptation between low and normal BMI groups
1994
Della Bianca, P. | Jequier, E. | Schutz, Y.
Objective: To explore if a behavioural adaptation--such as a reduction in total free-living energy expenditure (EE)--occurs in Gambian individuals with low body mass index (BMI <18.5 kg/m2). Design: Cross-sectional comparative study of young Gambian men living in rural area. Methods: Total daily free-living EE was assessed from the heart rate method (using individual regression line between heart rate and EE determined in a respiration chamber). Subjects: One group of underweight men (n = 26, BMI = 17.2 +/- 0.2 kg/m2 compared to a control group with normal BMI matched for age and height (n = 28, BMI = 23.3 +/- 0.2 kg/m2). Results: In absolute value, the free-living EE of the low BMI group was significantly lower than that of the control group (10.3 +/- 0.5 vs 12.7 +/- 0.5 MJ/d, P < 0.001). Expressed per kg body weight or kg fat-free mass, the differences between the two groups disappeared. In both groups, the level of free-living EE averaged approximately two times the basal metabolic rate. Conclusions: Rural Gambian men with low BMI and normal BMI have similar levels of free-living EE when normalized for body weight or fat-free mass. Their level of activity can be judged as moderate to heavy. Within the range of BMIs studied there was no evidence of behavioural adaptation to save energy.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par National Agricultural Library
Découvrez la collection de ce fournisseur de données dans AGRIS