Izvorni znanstveni članak

https://doi.org/10.26582/k.54.2.9

Acute effects of a typical rhythmic gymnastic training day on physiological parameters in Olympic athletes

Raquel de Jesus Silva ; Nutrition Department, Federal University of Sergipe, São Cristóvão, Brazil
Lysandro Pinto Borges ; Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Brazil
Lucindo José Quintans-Júnior ; Health Sciences Graduate Program, Federal University of Sergipe (UFS), Aracaju, Brazil; Laboratory of Neuroscience and Pharmacological Assays, Federal University of Sergipe (UFS), São Cristóvão, Brazil
Camila Ferezin Resende ; Brazilian Gymnastics Confederation (CBG), Aracajú, Brazil
Flávio Adsuara Cadegiani ; Adrenal and Hypertension Unit, Division of Endocrinology and Metabolism, Department of Medicine, Federal University of São Paulo Medical School, São Paulo, Brazil
João Henrique Gomes ; Health Sciences Graduate Program, Federal University of Sergipe (UFS), Aracaju, Brazil
Renata Rebello Mendes ; Nutrition Department, Federal University of Sergipe, São Cristóvão, Brazil

Sažetak

The aim of this study was to evaluate the effects of a day with two separate training sessions (morning and afternoon) of rhythmic gymnastics on erythrocytes, leukocytes, muscle damage, oxidative stress, and hydration of Brazilian team [age 17.7 (±1.1) years; body height 165 (±0.5) cm; body mass 49.7 (±4.2) kg]. Heart rate and session-ratings of perceived exertion were used to monitor training intensity. Blood samples were collected immediately before (M1) and after (M2) the training day for analyzing erythrocytes, leukocytes, plasma creatine kinase activity, lactate dehydrogenase, alanine aminotransferase, aspartate aminotransferase, ferric reducing ability plasma, thyroid-stimulating hormone, and free T4. Saliva was collected for cortisol analysis. After 24 hours rest (M3), blood collection was performed to analyze creatine kinase and lactate dehydrogenase. The moderate-intensity training day induced significant elevations of total leukocytes (5,163.3 to 9,617.8), lymphocytes (1,752.7 to 2,729.7), neutrophils (2,873.9 to 6,163.6), monocytes (255.7 to 519.1), platelets (280,000.0 to 300,666.7), aspartate aminotransferase (13.1 to 25.6), lactate dehydrogenase (102.5 to 249.1), thyroid-stimulating hormone (1.0 to 3.2), and ferric reducing ability plasma (136.8 to 165.4), as well as significant reductions in red cells (4,691,111.1 to 4,497,777.8), hematocrit (42.1 to 39.3), and hemoglobin (12.9 to 12.5) at M2. There were also significant increases in creatine kinase (144.2 to 519.3) and lactate dehydrogenase (102.5 to 538.2) at M3. The average dehydration rate was 1.3%. A moderate-intensity day of training in rhythmic gymnastics of 8h21min duration caused hemolysis, leukocytosis, muscle damage, redox status perturbations, and insufficient hydration status. These findings show that athletes are exposed to physiological vulnerabilities that can possibly harm their performance and health.

Ključne riječi

erythrocytes; sports; creatine kinase; metabolic response; leukocytes

Hrčak ID:

284588

URI

https://hrcak.srce.hr/284588

Datum izdavanja:

31.12.2022.

Posjeta: 637 *