Relationship Between Bioimpedance Vector Displacement and Renal Function After a Marathon in Non-elite Runners.
Por:
Nescolarde L, Roca E, Bogónez-Franco P, Hernández-Hermoso J, Bayes-Genis A and Ara J
Publicada:
6 may 2020
Ahead of Print:
6 may 2020
Resumen:
Purpose: This study investigates the relationship between whole-body bioimpedance vector displacement, using bioelectrical impedance vector analysis (BIVA), and renal function through serum biomarkers [creatinine, urea, sodium, C-reactive protein (CRP), and creatine kinase] and urine biomarkers after a marathon. Methods: Bioimpedance measurements were taken among 19 non-elite runners at 24 h pre-race, immediately post-race, and at 48 h post-race. The bioimpedance measurements were analyzed by BIVA using the Hotelling's T2 test. The runners were divided according to a cutoff of serum creatinine level immediately post-race in G1 (<1.2 mg/dl of serum creatinine level) and G2 (=1.2 mg/dl of serum creatinine level). The increase of the serum creatinine levels in 83% of G2 runners was related to acute kidney injury (AKI) stage 1. Results: Neither G1 nor G2 showed a creatinine clearance rate (CCr) lower than 60 ml/min. G2 showed a significant increase in CRP values at 48 h post-race vs baseline compared to G1 (P < 0.05), with over 5 mg/L (6.8-15.2) in 92% of the runners, and in CK values with over 215 U/L (282-1,882) at 48 h post-race in 100% of the runners. By BIVA, the 95% confidence ellipses of G2 showed shorter bioimpedance vectors than G1, with a noticeable minor Xc/H (P < 0.01), indicating an expansion on extracellular water and inflammation. The runners with 48 h post-race Xc/H values =30.5 O, with a decrease from -3 to -12% with respect to the Xc/H value at 24 h pre-race, indicated AKI stage 1 with 85.7% sensitivity and 91.7% specificity, with a direct correlation between AKI stage 1 with greater CRP values at 48 h post-race and bioimpedance vector displacement, but not with CK values at 48 h post-race. Conclusion: Through this data collection, it was evidenced that a transient reduction in renal function is more related to inflammatory factors than muscle damage. The BIVA method along with serum biomarkers could be used to follow up the kidney function in runners.
Filiaciones:
Nescolarde L:
Department of Electronic Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
Roca E:
Department of Electronic Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
Bogónez-Franco P:
Department of Electronic Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
Hernández-Hermoso J:
Department of Orthopedic Surgery and Traumatology, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
Department of Surgery, Faculty of Medicine, Universitat Autònoma de Barcelona, Campus UAB, Barcelona, Spain
Bayes-Genis A:
Department of Cardiology, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
Department of Medicine, Faculty of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
Research Program, Fundació Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol, Barcelona, Spain
Ara J:
Department of Nephrology, Hospital Universitari Germans Trias i Pujol, Barcelona, Spain
Open Access
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