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Detalhes da Produção
| Tipo | Artigo Publicado |
| Grupo | Produção Bibliográfica |
| Descrição | TRIANA, R. O. ; BIGLIASSI, M. ; FONTES, E. B. ; ALTIMARI, L.R. ; MORAES, A. C.. Can information on remaining time modulate psychophysiological parameters during an intermittent exercise?. Journal of Sports Medicine and Physical Fitness (Testo stampato), v. ., p. Epub ahead-, 2014. |
| Autor | Eduardo Bodnariuc Fontes |
| Ano | 2014 |
Informações Complementares
| Ano do artigo | 2014 |
| Descricão e Informacões Adicionais | The purpose of the present study was to verify the effect of information on remaining time on physiological and perceptual responses during an intermittent exercise. METHODS: Ten trained cyclists participated in this study (176 0.4 cm; 78.5 10.4 kg; 32.5 6.0 years; peak power output: 369.8 37.8 W; VO2peak: 51.90 10.37 mL/kg/min). An intermittent cycling protocol consisting of four minutes at low-intensity (50% PPO) intervals followed by one-minute high-intensity bouts (100% PPO) under three different conditions were performed: OL40 = 40 min open-loop with no information on remaining time; CLI40 = 40 min closed-loop with information on remaining time; and CLI20 = 20 min closed-loop with information on remaining time. Ventilatory data (VO2) and electromyographic signals (EMG) were continuously recorded, and rating of perceived exertion (RPE) was acquired at the end of the high-intensity periods. RESULTS: Results indicated that the oxygen consumption and muscle activity during OL40 were lower than CLI40. OL40 also demonstrated significantly lower VO2 values compared to CLI20 during high-intensity periods at 10 and 20 min. Root mean square values from EMG data for OL40 during high-intensity periods were significantly lower at 40 min compared with CLI40, and when the high-intensity period median frequencies among protocols were compared, CLI40 presented significantly higher values than the other conditions at 5 and 10 min. CONCLUSION: Even when power output is maintained, information on remaining time may alter peripheral responses through a complex saving component to prevent higher energy expenditure during physical exercise. |
| Descricão e Informacões Adicionais(en) | The purpose of the present study was to verify the effect of information on remaining time on physiological and perceptual responses during an intermittent exercise. METHODS: Ten trained cyclists participated in this study (176 0.4 cm; 78.5 10.4 kg; 32.5 6.0 years; peak power output: 369.8 37.8 W; VO2peak: 51.90 10.37 mL/kg/min). An intermittent cycling protocol consisting of four minutes at low-intensity (50% PPO) intervals followed by one-minute high-intensity bouts (100% PPO) under three different conditions were performed: OL40 = 40 min open-loop with no information on remaining time; CLI40 = 40 min closed-loop with information on remaining time; and CLI20 = 20 min closed-loop with information on remaining time. Ventilatory data (VO2) and electromyographic signals (EMG) were continuously recorded, and rating of perceived exertion (RPE) was acquired at the end of the high-intensity periods. RESULTS: Results indicated that the oxygen consumption and muscle activity during OL40 were lower than CLI40. OL40 also demonstrated significantly lower VO2 values compared to CLI20 during high-intensity periods at 10 and 20 min. Root mean square values from EMG data for OL40 during high-intensity periods were significantly lower at 40 min compared with CLI40, and when the high-intensity period median frequencies among protocols were compared, CLI40 presented significantly higher values than the other conditions at 5 and 10 min. CONCLUSION: Even when power output is maintained, information on remaining time may alter peripheral responses through a complex saving component to prevent higher energy expenditure during physical exercise. |
| Divulgacão Científica | NAO |
| Idioma | Inglês |
| ISSN | 00224707 |
| Meio de Divulgação | NAO_INFORMADO |
| Natureza | COMPLETO |
| Página Inicial | Epub ahead |
| Relevância | NAO |
| Série | . |
| Título do Artigo | Can information on remaining time modulate psychophysiological parameters during an intermittent exercise? |
| Título do Artigo(en) | Can information on remaining time modulate psychophysiological parameters during an intermittent exercise? |
| Título do Períodico ou Revista | Journal of Sports Medicine and Physical Fitness (Testo stampato) |
| Volume | . |