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  • ItemAcesso Aberto
    Effect Of Cold Water Immersion On Elbow Flexors Muscle Thickness After Resistance Training
    2018-03 - Matos, Filipe; Neves, Eduardo Borba; Rosa, Claudio; Reis, Victor Manuel Machado De Ribeiro Dos; Saavedra, Francisco José Félix; Silva, Severiano; Alves, José Manuel Vilaça Maio
    Matos, F, Neves, EB, Rosa, C, Reis, VM, Saavedra, F, Silva, S, Tavares, F, and Vilac¸ a-Alves, J. Effect of cold-water immersion on elbow flexors muscle thickness after resistance training. J Strength Cond Res 32(3): 756–763, 2018—Cold-water immersion (CWI) is commonly applied to speed up the recovery process after exercise. Muscle damage may induce a performance reduction and consequence of the intramuscular pressure induced by the muscular swelling. The aim of the study was to verify the CWI effects on muscle thickness (MT) behavior of the elbow flexors after a strength training (ST) protocol. Eleven men were submitted to an ST, performed in 2 different weeks. In one of the weeks, subjects experienced a passive recovery. In the other, subjects were submitted to a CWI (20 minutes at 5–108 C). Ultrasound (US) images were taken before, after, as well as 24, 48, and 72 hours after exercise, to evaluate the MT. Muscle thickness in both exercise arm (EA) and control arm (CA) was significantly higher 48 and 72 hours after exercise when subjects were submitted to a passive recovery compared with the CWI (p = 0.029, p = 0.028, p = 0.009, and p = 0.001, 48 hours, 72 hours, EA, and CA, respectively). When each arm was analyzed with or without using CWI individually, significantly higher MT was observed in the EA with CWI: before exercise in relation to 72 hours after exercise (p = 0.042) and after exercise in relation to the other measurements (p = 0.003, p = 0.003, p = 0.038, and p , 0.0001, before exercise and 24, 48, 72 hours after exercise, respectively). The evaluation of MT by US provides evidence that CWI after ST (and 24 hours after exercise) may reduce muscle swelling in the postexercise days when compared with a passive recovery. Seems to be a paradox between the uses of CWI for an acute reduction of muscle swelling
  • ItemAcesso Aberto
    Self-Selected Training Load and RPE During Resistance and Aerobic Training Among Recreational Exercisers
    2018 - Dias, Marcelo R C; Simão, Roberto; Saavedra, Francisco José Félix; Buzzachera, Cosme F.; Fleck, Steven
    This study compared training load and ratings of perceived exertion (RPE) during resistance training (RT) and aerobic training (AT) sessions at self-selected intensity. Participants were 54 recreationally trained subjects assigned to either RT or AT groups. During RT, participants performed three sets of 10 repetitions of each exercise at a self-selected intensity (load). After RT completion, participants performed one repetition maximum (1RM) and 10RM tests. During AT, participants performed a treadmill exercise at a self-selected intensity and duration (velocity and time). After AT completion, participants performed a treadmill maximal exercise test using a ramp protocol. During RT, subjects chose an intensity (43.6%–60.2% 1RM) below typical training recommendations, and RPE increased in successive exercise sets. During AT, participants chose an intensity (83.9% Heart Ratepeak) in line with typical training recommendations, and RPE increased from the first to second quartile of the session (from a mean of 3.9, standard deviation [SD] ¼ 1.7 to a mean of 5.4, SD ¼ 1.7; p 67% 1RM) and AT intensities in line with typically recommended intensity (64%–95% HRmax) for cardiovascular fitness increases. Thus, for recreational trained individuals to perform RT at recommended intensities, specific instruction will be required.
  • ItemAcesso Restrito
    Comparison of the world and european records in the 100m dash by a quasi-physical model
    2016 - Barbosa, Tiago; Pedro Forte; Marinho, Daniel; Reis, VM
  • ItemAcesso Restrito
    Electromyography analysis of the abdominal crunch in stable and unstable surface
    2016 - Alves, José Manuel Vilaça Maio; Flávia Guimarães; Rosa, Claudio; Eduardo Borba Neves; Saavedra, Francisco José Félix; André Fernandes; Reis, Victor Manuel Machado De Ribeiro Dos