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Effects of Intense Physical Activity with Free Water Replacement on Bioimpedance Parameters and Body Fluid Estimates

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Journal of Physics: Conference Series 2012年第1期407卷

作者： E B Neves L Ulbricht E Krueger E F R Romaneli M N Souza Biomedical Engineering Master Program/PPGEB Federal Technological University of Paraná Av. Sete de Setembro 3165 80230-901 Curitiba/PR Brazil Rehabilitation Engineering Laboratory Federal Technological University of Paraná Av. Sete de Setembro 3165 80230-901 Brazil Automation and Control Engineering Academic Department of Electrotechnics Federal Technological University of Paraná Av. Sete de Setembro 3165 80230-901 Brazil Biomedical Engineering Program – COPPE/UFRJ Centro de Tecnologia Bloco H sala 327 21949-900 Brazil

Authors have emphasized the need for previous care in order to perform reliable bioimpedance acquisition. Despite of this need some authors have reported that intense physical training has little effect on Bioimpedance Analysis (BIA), while other ones have observed significant effects on bioimpedance parameters in the same condition, leading to body composition estimates considered incompatible with human physiology. The aim of this work was to quantify the changes in bioimpedance parameters, as well as in body fluids estimates by BIA, after four hours of intense physical activity with free water replacement in young males. Xitron Hydra 4200 equipment was used to acquire bioimpedance data before and immediately after the physical training. After data acquisition body fluids were estimates from bioimpedance parameters. Height and weight of all subjects were also acquired to the nearest 0.1 cm and 0.1 kg, respectively. Results point that among the bioimpedance parameter, extracellular resistance presented the most coherent behavior, leading to reliable estimates of the extracellular fluid and part of the total body water. Results also show decreases in height and weight of the participants, which were associated to the decrease in body hydration and in intervertebral discs.

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