The analyzer provides information on tbw expressed as liters of water water as a percentage of body weight and water as a percentage of lean body weight or fat free mass. Twelve active adult 18 29 years males exercised at 70 vo2max on a cycle ergometer in a thermal environment 30 c to induce a 25 reduction in body mass.
Hydration Korey Stringer Institute
Effect of dehydration on body fat measurement. Your body fat is pretty water dense so dense in fact that body fat is comprised of about 10 water. Such scales work with the help of sensors underneath. An overestimation of body fat. The purpose of this study was to determine the effect of exercise and thermal dehydration and subsequent glycogen supercompensation on dxa based measurement of body composition. This is especially significant after completing a vigorous workout routine. Join date mar 2017.
How does hydration affect the output on a body fat scale. That different body fat scales produce widely varying readings and that these often differ from standard methods of fat measurement 03 19 2017 19. Its a calculation of your weight to height ratio and can provide insight into risk for diseases. You simply step on the scale and the tool measures both your body weight and your estimated fat percentage. That means that your changing level of hydration can have a significant effect on the body fat reading that you get. Research findings by the chicago state university suggested that dehydration of 29 body mass decreases the ability to generate upper and lower body strength.
Dehydration is a recognized factor affecting bia measurements as it causes an increase in the bodys electrical resistance so has been measured to cause a 5 kg underestimation of fat free mass ie. Body mass index or bmi is the customary method used to measure obesity. Research findings by the chicago state university suggested that dehydration of 29 body mass decreases the ability to generate upper and lower body strength. Its been shown that for every five point increase in bmi your risk of death increases 31 and while bmi cant be used as a sole indicator for disease risk it does help. Effects of hydration on lean body weight the following information may be useful when interpreting a subjects hydration status or total body water tbw test results. Body fat measurements are lower when measurements are taken shortly after consumption of a meal causing a variation.
This study was designed to investigate the effects of dehydration on the measurement of percent fat fat fat mass fm and fat free mass ffm as measured by bioelectrical impedance bia air. Body fat scales are easy to use. This is supposed to eliminate the dehydration factor. The researchers recommended that coaches and athletes must understand that sports performance requiring strength and power may be impaired by inadequate hydration resulting in increased susceptibility to injury. The researchers recommended that coaches and athletes must understand that sports performance requiring strength and power may be impaired by inadequate hydration resulting in increased susceptibility to injury.