نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار، گروه علوم ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران
2 گروه علوم ورزشی، دانشکدة علوم تربیتی و روانشناسی، دانشگاه شهید مدنی آذربایجان،تبریز-ایران
3 گروه عمومی و علوم پایه، دانشکده اقتصاد و مدیریت، دانشگاه علوم و فنون دریایی خرمشهر. ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and purpose: Examining the factors that contribute to enhancing the efficiency and performance of athletes is a subject that has captured the attention of coaches and athletes. For this reason, in addition to the exercises during the preparatory period, they utilize various strategies to help athletes reach their peak performance, which may involve the use of supplements. Therefore, the aim of this study was to compare the effects of locally supplemented and delayed-release sodium bicarbonate on serum bicarbonate levels and blood lactate in semi-endurance runners.
Materials and methods: Twenty-four athletes (mean age: 22.75 ± 4.24 years; height: 173.3 ± 5.68 cm; weight: 63.3 ± 3.61) who trained regularly and had a minimum of two years of training experience voluntarily took part in this study. The subjects were randomly divided into three groups: one receiving sodium bicarbonate enclosed in delayed-release capsules (CAP), another receiving topical sodium bicarbonate (PRL), and a third receiving a placebo (CON). The variables of lactate, bicarbonate, blood pH, digestive discomfort questionnaire, and the 1500m record were measured. Blood sampling was conducted in three stages: at rest, after participants took supplements or placebos, and two minutes after running 1500 meters. The samples were analyzed by a laboratory expert using a blood gas analyzer. To analyze the data, a 3x3 repeated measures analysis of variance, Bonferroni post hoc test, and one-way ANOVA were utilized at a significance level of α ≥ 0.05.
Results: The results of the two-way repeated measures analysis of variance for the variables of blood pH, bicarbonate, and gastrointestinal discomfort scores indicate that the impact of measurement steps is significant irrespective of the group factor (P<0.05), and the differences between groups are significant regardless of the impact of steps. (P<0.05). The variance analysis results for blood pH, bicarbonate, and digestive discomfort scores indicate an interaction effect between measurement steps and group differences (P<0.05). However, no interaction effect was observed with lactate. Results from the follow-up test show significant changes in blood pH and bicarbonate in the CAP group, while no significant changes were seen in the PRL and CON groups. There were no significant differences in lactate scores, digestive discomfort, and 1500m record among the three groups.
Conclusion:Based on the results obtained, the body's alkaline reserves can be enhanced by supplementing with sodium bicarbonate using the delayed-release method. Furthermore, employing delayed-release capsules can alleviate symptoms of digestive discomfort resulting from the consumption of conventional sodium bicarbonate. Consequently, alleviating gastrointestinal discomfort post sodium bicarbonate intake may boost its usage among athletes and positively impact their performance.
کلیدواژه‌ها [English]
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