The Effect of Passive Dehydration on Phase Angle and Body Composition: A Bioelectrical Impedance Analysis.
| Autor: | Aburto-Corona JA; Doctoral School Physical Activity and Sports Sciences, University of Leon, 24007 Leon, Spain.; Faculty of Sports, Autonomous University of Baja California, Tijuana 22424, Mexico., Calleja-Núñez JJ; Faculty of Sports, Autonomous University of Baja California, Tijuana 22424, Mexico., Moncada-Jiménez J; Human Movement Sciences Research Center (CIMOHU), University of Costa Rica, San José 11501, Costa Rica., de Paz JA; Institute of Biomedicine (IBIOMED), University of Leon, 24071 Leon, Spain. |
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| Jazyk: | angličtina |
| Zdroj: | Nutrients [Nutrients] 2024 Jul 10; Vol. 16 (14). Date of Electronic Publication: 2024 Jul 10. |
| DOI: | 10.3390/nu16142202 |
| Abstrakt: | Bioelectrical impedance analysis (BIA) is a method used to estimate body composition, and it relies mainly on the body's water content. Insufficient body water can introduce bias to body composition scores. Purpose: To determine the effect of body weight loss elicited by passive dehydration on body composition scores, including phase angle (PhA). Methods: Twenty-five euhydrated apparently healthy and physically active men's (age = 22.6 ± 3.3 yr.; body mass = 76.7 ± 15.9 kg; height = 172.0 ± 6.3 cm) body composition variables and PhA were measured before and after sitting quietly for 5 h in a controlled environment (26.6 ± 1.7 °C, 72 ± 4.9%RH). Results: It was found that five hours of passive dehydration caused a loss in body weight (Δ = 0.76 ± 0.34 kg, p < 0.05) and a decrease in body fat estimation (Δ = 0.90 ± 0.87 kg, p < 0.001). Additionally, an increase in ECW (Δ = 0.12 ± 0.30 L, p < 0.021) and PhA (Δ = 0.10 ± 0.15°, p < 0.005) was observed. Conclusion: Body weight loss due to passive dehydration decreased BIA-derived fat mass, and increased extracellular water and PhA in physically active and apparently healthy men. Nonetheless, these changes had a negligible effect on the accuracy of the equipment, rendering them clinically insignificant. |
| Databáze: | MEDLINE |
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