Energy contributions in swimmers with physical impairments in an all-out 200-m front crawl test
Autor: | Flávio Antônio de Souza Castro, Ricardo de Assis Correia, Daniela Ongaratto, Wellington Gomes Feitosa |
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Rok vydání: | 2021 |
Předmět: |
medicine.medical_specialty
Body position VO2 max 030229 sport sciences 030204 cardiovascular system & hematology Biology Lower energy 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation medicine Blood lactate Orthopedics and Sports Medicine Energy source Anaerobic exercise Front crawl Balance (ability) |
Zdroj: | Sport Sciences for Health. 17:647-653 |
ISSN: | 1825-1234 1824-7490 |
Popis: | In competitive swimming, performance is associated with swimming a certain distance in the shortest possible time. Specifically, in an all-out 200-m front crawl test (T200), the intensity and duration of effort represent a challenge for coaches and swimmers to balance swimming speed with the ability to use different energy sources (aerobic and anaerobic) with lower energy cost (C). In the case of swimmers with physical impairments, physiological parameters are still little explored, and their monitoring may allow a better understanding of performance. The aim of this study was to assess the total metabolic energetic contribution (Etot) and C of swimmers with physical impairments in a T200. Eleven swimmers (7 males and 4 females; age: 32.3 ± 12.3 years) with physical impairments performed a T200 with the use of a snorkel and respiratory valve system. Measurements were performed for peak oxygen uptake (VO2peak), blood lactate concentration (La), Etot and C. The performance was 210.2 ± 48.1 s (swimming speed 0.99 ± 0.14im·s−1). The aerobic, anaerobic lactic and anaerobic alactic contributions were 70.1%, 17.1% and 12.8%, respectively. C was 1.22 ± 0.52 kJ m−1. Swimmers with physical impairment of different sport classes presented, predominately, high aerobic metabolism contribution to the Etot and different values of C, with a certain tendency of C being lower in those faster swimmers than in slower swimmers. Possible divergences in this trend seem to be explained by the different competitive levels, body position and upper limb impairment. |
Databáze: | OpenAIRE |
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