Efeito da suplementação de bicarbonato de sódio em indicadores de dano muscular e análises psicofisiológicas em indivíduos treinados: um estudo Cross over, duplo cego e randomizado
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Data
2025-12-03
Autores
Leite, Carine Daniellle Ferreira Costa
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Universidade Federal do Espírito Santo
Resumo
Bodyweight HIIT (HIIT-C) utilizes bodyweight exercises such as jumping jacks, burpees, mountain climbers, and jump squats in a high-intensity "all-out" session followed by a period of passive or active recovery. Intramuscular acidosis resulting from the accumulation of H + ions during highintensity activity is considered an important factor in muscle fatigue, and therefore, sodium bicarbonate (NaHCO3) supplementation has been considered capable of increasing buffering capacity, resulting in decreased acidosis and increased performance. There is no data in the literature on the effect of NaHCO3 supplementation in bodyweight HIIT (HIIT-C) sessions on markers of exercise-induced muscle damage (EIMD) and psychophysiological parameters, which is the objective of this study. Methodology: Thirteen healthy male volunteers, aged between 20 and 40 years, who regularly practiced physical activity, participated in the study. All participants signed an informed consent form. This study was approved by the Ethics Committee for Human Research at the Federal University of Espírito Santo under opinion number 5.185.275/2021. Supplementation was performed through the ingestion of 0,3 g/kg of body weight of NaHCO3 and placebo (0,3 g/kg of body weight of calcium carbonate), in a crossover, double-blind, and randomized design. Participants randomly performed the following protocols: 1) HIIT-C session, "all out" intensity, and NaHCO3 supplementation. 2) HIIT-C session, "all out" intensity, and placebo supplementation, with a session duration of 20 minutes, consisting of 30 seconds of active exercise and 30 seconds of passive exercise. Subjective perception of effort and pain was recorded using the Borg scale (0-10), VAS, Corlet diagram, pressure algometer, as well as limb circumference, physical performance, mood and pleasure scale analyses, all of which were evaluated at baseline (without capsules and without HIIT), pre-session, immediately after sessions, and 24 hours after sessions. Serum samples were collected for the evaluation of creatine kinase (CK), creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), pH, and bicarbonate concentration (HCO3 - ) at baseline, pre-session, immediately after, and 24 hours after the session, in addition to lactate collection and its evaluation using a portable device at baseline, pre- and post-HIIT-C. All data are presented as mean ± standard deviation (SD). Differences between post-exercise and intra-condition measurements were assessed using ANOVA and Tukey or Bonferroni post-hoc tests at the p≤0.05 level, using the PRISMA program. Results: NaHCO3 supplementation increased (p≤0.05) [HCO3 - ] before the start of exercise and resulted in higher (p≤0.05) [La-] and pH when compared to placebo. Although the NaHCO3 session had a higher (p≤0.05) HR, it did not differ (p≤0.05) in RPE and RRP from the placebo session. The NaHCO3 session showed a higher (p≤0.05) total number of movements when compared to the placebo session. Both supplementations showed a reduction in pleasure, with increased fatigue, mental confusion, mood disturbance, and pain in the leg and extended arm after HIITC, but without differing (p≤0.05) between the supplementations. A reduction in the pressure pain threshold in the biceps was observed after the placebo session, but without differing (p≤0.05) from NaHCO3, and a reduction in the pressure pain threshold in the triceps was also observed after the NaHCO3 session, but 13 without differing (p≤0.05) from placebo, with a significant increase (p≤0.05) in pain in the right thigh after HIIT-C with NaHCO3 when compared to placebo. No significant changes (p ≤ 0.05) were found in limb circumferences and countermovement jump between the protocols, placebo, and NaHCO3. A significant increase (p ≤ 0.05) was observed in triceps thickness 24 hours after the NaHCO3 session when compared to pre-placebo. Significant increases (p≤0.05) in CK were observed 24 hours after the placebo session, and significant increases in LDH and CK-MB were observed immediately after the placebo session. The NaHCO3 session showed a significant increase (p≤0.05) in CK-MB immediately afterward, but without differing from the placebo session. Conclusion: Supplementation with NaHCO3 improved performance and possibly attenuated or prevented DMIE
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Palavras-chave
Bicarbonato de sódio , HIIT-C , Desempenho , Dano muscular , Sodium bicarbonate , HIIT-C , Performance , Muscle damage