Body composition by x-ray absorptiometry and bioelectrical impedance in female runners

摘要: ABSTRACT Body composition interests athletes since athletic performance is influenced by and dependent on the proportion total amount of fat-free mass (FFM) fat mass. The use bioelectrical impedance (BIA) has increased recently portable instruments make measurements easy to execute relatively inexpensive. purpose this study was test degree relationship between FFM calculated in elite female runners with 12 different BIA formulas reported literature measured dual-energy x-ray absorptiometry (DXA). present shows that body valid runners. Prediction equations used calculate must be appropriate for population subgroup validated against other methods, such as DXA hydrodensitometry. Those performed well controls gave poor results runner vice versa. below average noted suggests prediction untrained women are inappropriate. formula RJL Systems-2 women: = 5.091 + 0.6483·height2/resistance 0.1996·weight best predictions Further research necessary validate athletes.