BACKGROUND/OBJECTIVES: Specific Bioelectrical Impedance Vector Analysis (BIVA sp) is a recently proposed technique for the evaluation of body composition. The aim of this study was to obtain the specific bioelectrical reference values for the Italian and Spanish young population. Further, we analyzed the agreement between specific BIVA and somatotype classifications. SUBJECTS/METHODS: A sample of a 440 individuals (220 from Italy, 220 from Spain; 213 men, 227 women) aged 18-30 years was considered for the definition of the specific reference values. Anthropometric (height, weight, and relaxed arm, waist, and calf circumferences) and bioelectrical measurements (resistance, R, and reactance, Xc; at 50 kHz and 800 μA) were taken. In a different sample 400 individuals (206 men and 194 women, 18-30 y) ten anthropometric measurements (height; weight; flexed arm and calf circumferences; triceps, subscapular, suprailiac, and calf skinfolds; humerus and femur breadths) were taken to assess the Heath-Carter somatotype. The comparison between groups with different somatotype was performed using the ANOVA and T2 Hotelling tests. RESULTS: The mean values for specific BIVA were: Rsp (332.7±41.7), Xcsp (44.4±6.8), Zsp (335.6±41.9) and phase (7.62°±0.8 ) in men; Rsp (388.6±60), Xcsp (43.7±7.5), Zsp (391±60.3) and phase (6.44°±0.7) in women. The differences between groups with different somatotype were always significant (p<0.05). In both sexes, the endomorphic groups were located towards the upper pole of the tolerance ellipses, that indicates a greater percentage of fat mass, according to specific BIVA. CONCLUSIONS:The specific tolerance ellipses can be used as references standards when assessing body composition in the Italian-Spanish young population.
Specific bioelectrical impedance vector reference values for assessing body composition in the Italian-Spanish young population
GUALDI, Emanuela;ZACCAGNI, Luciana;
2014
Abstract
BACKGROUND/OBJECTIVES: Specific Bioelectrical Impedance Vector Analysis (BIVA sp) is a recently proposed technique for the evaluation of body composition. The aim of this study was to obtain the specific bioelectrical reference values for the Italian and Spanish young population. Further, we analyzed the agreement between specific BIVA and somatotype classifications. SUBJECTS/METHODS: A sample of a 440 individuals (220 from Italy, 220 from Spain; 213 men, 227 women) aged 18-30 years was considered for the definition of the specific reference values. Anthropometric (height, weight, and relaxed arm, waist, and calf circumferences) and bioelectrical measurements (resistance, R, and reactance, Xc; at 50 kHz and 800 μA) were taken. In a different sample 400 individuals (206 men and 194 women, 18-30 y) ten anthropometric measurements (height; weight; flexed arm and calf circumferences; triceps, subscapular, suprailiac, and calf skinfolds; humerus and femur breadths) were taken to assess the Heath-Carter somatotype. The comparison between groups with different somatotype was performed using the ANOVA and T2 Hotelling tests. RESULTS: The mean values for specific BIVA were: Rsp (332.7±41.7), Xcsp (44.4±6.8), Zsp (335.6±41.9) and phase (7.62°±0.8 ) in men; Rsp (388.6±60), Xcsp (43.7±7.5), Zsp (391±60.3) and phase (6.44°±0.7) in women. The differences between groups with different somatotype were always significant (p<0.05). In both sexes, the endomorphic groups were located towards the upper pole of the tolerance ellipses, that indicates a greater percentage of fat mass, according to specific BIVA. CONCLUSIONS:The specific tolerance ellipses can be used as references standards when assessing body composition in the Italian-Spanish young population.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
