Bioelectrical impedance vector analysis (BIVA) in university athletes

• Author(s): Martins, Priscila Custodio ; Gobbo, Luis Alberto [UNESP] ; Silva, Diego Augusto Santos
• Date: 2021
• Persistent ID: http://hdl.handle.net/11449/209092
• Origin: Oasisbr
• Subject(s): Body water; Body composition; Athletic performance; Sports
• Document Type: Journal article
• Language: English

Description

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Background: Bioelectrical impedance vector analysis (BIVA) is able to identify differences in hydration status and body composition components, such as body cell mass (BCM) by means of plotting individuals in ellipses, when comparing groups with different characteristics. Objective: Compare the confidence and tolerance ellipses of BIVA in individual and team sports athletes with a non-athlete reference population. Design and participants: One hundred sixty-seven college athletes (team sports: 117 athletes, individual sports: 50 athletes) aged between 18 and 35 years. Bioelectrical impedance was used to measure resistance (R) and reactance (Xc) values that were used in the BIVA analysis to identify hydration status and BCM, respectively. Hotelling's t-test was used to identify differences between groups in the confidence ellipses and the comparison was made with a non-athlete Italian reference population. Results: There were no differences between male team sports and individual athletes (p = 0.151) and for female athletes (p = 0.624). Most athletes were located in the 50% tolerance ellipses, indicating adequate hydration. Compared to the Italian a non-athlete population, athletes of both sexes presented left impedance vector deviation in the minor axis (Xc) of the tolerance ellipses, indicating higher BCM. Conclusion: There were no differences in BIVA between team and individual sports athletes, but most athletes presented an adequate hydration state and, compared to a non-athlete population, the athletes of the present study presented higher BCM.

Univ Fed Santa Catarina, Dept Educ Fis, Ctr Desportos, Campus Univ Trindade Caixa Postal 476, BR-88040900 Florianopolis, SC, Brazil

Univ Estadual Paulista, Sao Paulo, Brazil

Univ Estadual Paulista, Sao Paulo, Brazil