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- Comparison of the anthropometrics, kinematics and kinetics in young swimmers of different competitive levelsPublication . Barbosa, Tiago M.; Bartolomeu, Raúl Filipe; Morais, J.E.; Costa, M.J.The biomechanics plays a major role in the performance delivered by young swimmers. However, the literature addresses mostly the differences in the kinematics across young swimmers of different competetive levels, being scarce on the kinetics. The aim was to compare the anthrpmetics, kinematics and kinetics in young swimmers of different competetive levels.
- Avaliação das assimetrias propulsivas em nado livre: ferramenta e diagnóstico para o processo de treinoPublication . Bartolomeu, Raúl Filipe; Rodrigues, Pedro M.; Morais, J.E.; Marinho, D.A.; Costa, M.J.; Barbosa, Tiago M.Atualmente já é possível adquirir no mercado sensores de pressão que se colocam nas mãos e/ou pés de onde se derivam as forças propulsivas com a possibilidade de se detetarem possíveis assimetrias. Foi objetivo do presente estudo ter uma compreensão clara de tais assimetrias num ambiente ecologicamente válido (p.e., nado dinâmico em vez de nado amarrado). máxima em três variantes do nado de crol: completo (C), só com membros superiores (MS) e só com membros inferiores (MI). A medição da força propulsiva em cada uma das condições foi efetuada com recurso a um sistema de monitorização (Aquanex System, DU2V, STR, EUA). Como variáveis definiram-se: o pico de força, a força média, o índice de assimetria (IS) como descrito por Robinson et al (1987), a velocidade média (v) e a frequência gestual (FG).
- The aging influence on cardiorespiratory, metabolic and energy expenditure adaptations in head-out aquatic exercises: differences between young and elderly womenPublication . Bartolomeu, Raúl Filipe; Barbosa, Tiago M.; Morais, J.E.; Lopes, Vitor P.; Bragada, José A.; Costa, M.J.The purpose of this study was to (1) to establish the relationship between acute physiological responses and musical cadence; and (2) compare physiologic responses between young and older women. Eighteen older (mean = 65.06 ± 5.77 years) and 19 young (mean = 22.16 ± 2.63 years) women underwent an intermittent and progressive protocol performing the head-out aquatic exercise "rocking horse. Results showed that older women demonstrated lower mean heart rate (HR), blood lactate concentration (bLa) and oxygen uptake (VO2) at rest. Hierarchical linear modelling showed that variations in the rating of perceived effort (RPE) and individual metabolic equivalent of task (MET) did not differ significantly by age group. However, during exercise, physiological responses of younger women were significantly different than for older women: in mean values, for each increased musical beat per minute (b/min), mean bLa was 0.003 mmol/l, VO2 0.024 ml/kg/min, and energy expenditure (EE) 0.0001 kcal/kg/min higher for younger women. This study shows that increases in musical cadence increased the cardiorespiratory, metabolic and energy expenditure responses. However, these responses during increasing intensity seemed to differ between young and older women, with lower values for the elderly group, when performing head-out aquatic exercises.