Body composition and bioelectrical parameters in recreational CrossFit® practitioners
DOI:
https://doi.org/10.66154/nmj.v2i1.20Keywords:
Bioelectrical impedance, Body composition, CrossFit, Athletes, Phase angleAbstract
Objective: To describe the raw bioelectrical and body composition parameters of CrossFit practitioners and to analyze the relationship between phase angle and body composition.
Methods: This was a cross-sectional observational study with 45 adult CrossFit practitioners (42.2% men and 57.8% women) from a gym in Porto Alegre, RS. Individuals who had been practicing the sport for at least three months, with a minimum frequency of three times a week, and who self-reported as healthy were included. Tetrapolar bioelectrical impedance (Biodynamics 450) was used to assess resistance, reactance, impedance, phase angle (PhA), lean mass, fat mass, total body water, intracellular and extracellular water, and lean mass index. The t-test for independent samples was used in SPSS 23.0 for comparison between sexes and Pearson's correlation for associations between variables. A significance level of 5% was adopted.
Results: Men had higher means of lean mass, total body water, and PhA; women presented higher values of body fat, resistance, and reactance. In the total sample, positive correlations were identified between PhA and lean mass (r=0.518; p<0.001), as well as with lean mass index (r=0.482; p=0.001). PhA also correlated inversely with body fat percentage (r=-0.454; p=0.002).
Conclusion: The findings corroborate PhA as a functional marker associated with lower body fat content and higher lean mass content, reinforcing the use of BIA as a viable tool for monitoring body composition in CrossFit practitioners.
References
Meyer J, Morrison J, Zuniga J. The Benefits and Risks of CrossFit: A Systematic Review. Workplace Health Saf. 2017;65(12):612-618. doi: https://doi.org/10.1177/2165079916685568
Ballarin G, Monfrecola F, Alicante P, et al. Raw Bioelectrical Impedance Analysis Variables (Impedance Ratio and Phase Angle) and Physical Fitness in Cross-Fit® Athletes. In: Proceedings of the 8th International Conference on Sport Sciences Research and Technology Support. SCITEPRESS - Science and Technology Publications; 2020:103-108. doi: https://doi.org/10.5220/0010066001030108
KYLE U. Bioelectrical impedance analysis?part I: review of principles and methods. Clinical Nutrition. 2004;23(5):1226-1243. doi: https://doi.org/10.1016/j.clnu.2004.06.004
Campa F, Toselli S, Mazzilli M, Gobbo LA, Coratella G. Assessment of Body Composition in Athletes: A Narrative Review of Available Methods with Special Reference to Quantitative and Qualitative Bioimpedance Analysis. Nutrients. 2021;13(5):1620. doi: https://doi.org/10.3390/nu13051620
Cebrián-Ponce Á, Serafini S, Petri C, Carrasco-Marginet M, Izzicupo P, Mascherini G. Somatotype and bioelectrical impedance vector analysis of Italian CrossFit® practitioners. Heliyon. 2024;10(8):e29139. doi: https://doi.org/10.1016/j.heliyon.2024.e29139
Campa F, Thomas DM, Watts K, et al. Reference Percentiles for Bioelectrical Phase Angle in Athletes. Biology (Basel). 2022;11(2):264. doi: https://doi.org/10.3390/biology11020264
Yamada Y, Yoshida T, Murakami H, et al. Phase angle obtained via bioelectrical impedance analysis and objectively measured physical activity or exercise habits. Sci Rep. 2022;12(1):17274. doi: https://doi.org/10.1038/s41598-022-21095-6
Bellido D, García-García C, Talluri A, Lukaski HC, García-Almeida JM. Future lines of research on phase angle: Strengths and limitations. Rev EndocrMetabDisord. 2023;24(3):563-583. doi: https://doi.org/10.1007/s11154-023-09803-7
Di Vincenzo O, Marra M, Scalfi L. Bioelectrical impedance phase angle in sport: a systematic review. J Int Soc Sports Nutr. 2019;16(1). doi: https://doi.org/10.1186/s12970-019-0319-2
Schutz Y, Kyle U, Pichard C. Fat-free mass index and fat mass index percentiles in Caucasians aged 18–98 y. Int J Obes. 2002;26(7):953-960. doi: https://doi.org/10.1038/sj.ijo.0802037
Oliveira Silvino V, Raffaela Barbosa Barros K, Machado Brito F, et al. Phase angle as an indicator of body composition and physical performance in handball players. BMC Sports Sci Med Rehabil. 2024;16(1):114. doi: https://doi.org/10.1186/s13102-024-00899-1
Mangine GT, McDougle JM, Feito Y. Relationships Between Body Composition and Performance in the High-Intensity Functional Training Workout "Fran" are Modulated by Competition Class and Percentile Rank. Front Physiol. 2022;13. doi: https://doi.org/10.3389/fphys.2022.89377
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