| Autor: |
Santos JA; Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal., Affonso HO; Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, Brazil.; Physiology, Laboratory of Exercise, Nutrition and Sports Training, Vitoria, Brazil., Boullosa D; INISA, Federal University of Mato Grosso do Sul, Campo Grande, Brazil.; Sport and Exercise Science, James Cook University, Townsville, Australia., Pereira TMC; Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, Brazil.; Federal Institute of Education, Science and Technology (IFES), Vila Velha, Brazil.; Pharmacology of Chronic Diseases (CDPHARMA), Molecular Medicine and Chronic Diseases Research Centre (CIMUS), University of Santiago De Compostela, Santiago de Compostela, Spain., Fernandes RJ; Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, Portugal., Conceição F; Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal.; Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, Portugal. |
| Abstrakt: |
Two top-level (10"04 and 10"13 in 100-m dash) and 2 sub-elite (10"97 and 11"44 in 100-m dash) male sprinters completed, after a standardised warm-up, various jump, sprint and weightlifting exercises in two consecutive days at the start of pre-season. Before and 30 s after the tests, the [La - ] were measured with a portable lactate analyser. The top-level sprinters exhibited much larger [La - ] than the sub-elite sprinters (< 5 mmol·L -1 ) after all the exercise tests. The maximum values recorded were 20.4 mmol·L -1 after the 20-m sprint tests for Athlete 1, and 22.4 mmol·L -1 after CMJ testing for Athlete 2. The greater Δ% were recorded after CMJ testing for Athlete 1 (from 1.9 to 13.6 mmol·L -1 ), and after the power clean test for Athlete 2 (from 1.4 to 17.6 mmol·L -1 ). These results suggest a different metabolic response to very short efforts (≤3 s) in top-level track and field sprinters. These findings reinforce the need to include lactate assessments, during training and evaluation sessions, to better understand the acute and chronic adaptations to training of sprinters of different levels. |
