Hematologic response to a Crossfit®-based high-intensity interval training (hit) session
DOI:
https://doi.org/10.17533/udea.efyd.v35n1a02Keywords:
exercise, resistance training, hematocrit, leukocytesAbstract
Aim: To evaluate the hematologic response to a CrossFit®-based high-intensity interval training (HIIT) session. Method: Pre-experimental study involving nine men (25.4 ± 4.3 years). In this study, blood samples were taken before and after a HIIT training session of 15 minutes in the main phase. Hematological variables were analyzed through a blood count of fourth generation. Results: The obtained results showed a significant difference (p<0.05) in red blood cells (%Δ: -1.35; ES: 0,222), hemoglobin concentration (%Δ: -1,18; ES: 0,263), hematocrit percentage (%Δ: -1,72; ES: 0,448), Mean Corpuscular Volume (%Δ: -0,47; ES: 0,108), and lymphocyte (%Δ: -24,89; ES: 0,855), and eosinophils count (%Δ: -24,32; ES: 0,290) when comparing samples before and after the session. There were no significant changes in other parameters. Conclusion: It is necessary to go deeper in the study of hematological variables in the HIIT, in order to optimize performance parameters, decrease the prevalence of injuries, and improve nutrition and supplementation strategies.
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