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. Research findings by the chicago state university suggested that dehydration of 29 body mass decreases the ability to generate upper and lower body strength. 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. Your muscle is composed largely of water. 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. This is especially significant after completing a vigorous workout routine.
Effect of a 1 liter fluid load on body composition measured by air displacement plethysmography and bioelectrical impedance. 06 13 2013 0215 pm 2. That means that your changing level of hydration can have a significant effect on the body fat reading that you get. View profile view forum posts registered. Your body fat is pretty water dense so dense in fact that body fat is comprised of about 10 water. Bioelectrical impedance is a method of tracking body fat that occurs by sending a low voltage electrical current through the body.
For example on the tanita website tanita is a brand of body fat scales it says under the faqs section that dehydration causes the body fat reading to come out higher than it actually is. Body fat percentage after the subjects drank a liter of water compared to the control group 1. So what is the right answer. Statistical treatment by two way analysis of variance for repeated measures revealed that although there were no significant differences between the two techniques of body composition determination under any of the three conditions there was a statistically significant decrease in percent body fat determined in the dehydrated state as compared to the control and hydrated conditions. Body fat percentage is an important measurement of a persons health risk. Research findings by the chicago state university suggested that dehydration of 29 body mass decreases the ability to generate upper and lower body strength.
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. Since water is a conductor of electricity the resistance the electrical signal experiences while traveling through the body will help determine what percentage of your body is fat.