Browsing by Author "Sousa, Marisa"
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- Anaerobic Threshold Individualized Assessment in a Young SwimmerPublication . Fernandes, Ricardo J.; Sousa, Marisa; Pinheiro, Armindo; Vilar, Sonia; Colaco, Paulo; Vilas-Boas, J. Paulo
- Analysis of Swimming Individual Anaerobic ThresholdPublication . Figueiredo, Pedro; Sousa, Marisa; Gomes, Mónica; Jesus, Kelly; Ribeiro, João; Fernandes, Ricardo
- Assessment of individual anaerobic threshold and stroking parameters in swimmers aged 10–11 yearsPublication . Fernandes, Ricardo J.; Sousa, Marisa; Pinheiro, Armindo; Vilar, Sonia; Colaço, Paulo; Vilas-Boas, J. Paulo
- AVALIAÇÃO DA COORDENAÇÃO ENTRE MEMBROS SUPERIORES NA TÉCNICA DE CROL EM NADADORES INFANTISPublication . Silva, Ana; Figueiredo, Pedro; Renato, Paulo; Amaral, Inês; Sousa, Marisa; Sampaio, António; Soares, Susana; Vilas-boas, J.Paulo; Fernandes, Ricardo J.
- Comparison between aerobic power parameters at different time-averaging intervals in swimming: An updatePublication . Sousa, Ana; Jesus, Kelly; Figueiredo, Pedro; Sousa, MarisaSousa et al. (Open Sports Sci J, 3: 22 – 24, 2010) showed that different time averaging intervals lead to distinct VO2 values in a maximal 200m front crawl effort, evidencing higher VO2 values for breath-by-breath sampling, and differences between this latter data acquisition and all the other less frequent time intervals studied (5, 10, 15 and 20 s). These are interesting outputs in the field of exercise physiology applied to swimming once: (1) VO2 assessment is conducted in a swimming pool with a portable gas analyser which allowed breath-by-breath measurements, and not in a swimming flume with a Douglas bag technique or mixing chamber analyser, as traditionally occurs, and (2) the comparison between different time-averaging intervals used to remove breath-by-breath fluctuations during exercise periods has remained neglected, in sport in general and swimming in particular. Therefore, in the present study, we investigate the influence that different time averaging intervals have in aerobic power related parameters (VO2peak and VO2max). Ten subjects performed 200m front crawl effort at supra-maximal intensities (all-out test) and other ten subjects performed 200m front crawl effort at maximal aerobic intensities (100% of VO2max).The intensity at which the 200m front crawl was performed (supra-maximal and maximal intensities) had a significant effect on VO2peak and VO2max values obtained for each averaging intervals studied.
- Economic Impact of the 11th Douro Valley Half MarathonPublication . Carvalho, Maria José; Sousa, Marisa; Paipe, Gustavo; Bavaresco, Gustavo; Felipe, José LuisThe aim of this study was to analyze the direct economic impact of the 11th Douro Valley Half Marathon held in Portugal in 2016. An ad-hoc questionnaire was designed for collecting data. It was composed of four dimensions: (i) sociodemographic data, (ii) expenses, (iii) sports practice, and (iv) satisfaction with the event (54 items in total). There were 375 questionnaires randomly collected in a total of 16,330 runners. The mean expense of local participants in this half marathon was €219, while non-resident participants expended about €320. Thus, the local participants’ inflow was €1,036,965, while the non-resident participants’ inflow was €3,709,760, resulting in a total participant inflow of €4,746,725. Regarding the participants’ specific expenses, the following order was obtained: 1st, accommodation; 2nd, food; 3rd, travel costs; 4th, shopping. It was calculated that the total local economic impact of the 11th Douro Valley Half Marathon participants was almost five million euros (€4,746,725).
- A gestão da Meia Maratona Douro Vinhateiro: Qualidade de serviços e intenções de recomendação dos participantesPublication . Carvalho, Maria José; Barros Filho, Marcos; Paipe, Gustavo; Bavaresco, Gustavo; Sousa, Marisa; Felipe, José LuisO objetivo do estudo foi identificar a perceção da qualidade de serviços e os seus efeitos nas intenções de recomendação dos participantes da Meia Maratona Douro Vinhateiro. Foram questionados 375 participantes através de um instrumento de recolha validado por especialistas. Procedeu-se à análise dos dados através de regressão linear múltipla entre as variáveis em estudo. Os principais resultados evidenciaram o percurso, a organização da Meia Maratona e a vida cultural da região como preditores significativos das intenções de recomendação do evento. Quanto às intenções de recomendar a região apenas o percurso obteve uma influência significativa. Uma forte relação entre o evento e a região foi identificada a partir dos valores preditivos do percurso nas intenções de recomendação. Tal constatação permite-nos enfatizar a importância do percurso na avaliação da qualidade de serviços em eventos de desporto. Os gestores com tais evidências científicas melhoram os seus conhecimentos e, consequentemente ficam mais habilitados para a otimização da gestão de eventos, mormente nos atributos relativos ao percurso e organização da corrida, bem como quanto à vida cultural da região, para que os participantes a ela adiram com satisfação e a recomendem.
- Influence of Prior Exercise on VO2 Kinetics Subsequent Exhaustive Rowing PerformancePublication . Sousa, Ana; Ribeiro, João; Sousa, Marisa; Vilas-Boas, João Paulo; Fernandes, Ricardo J.Prior exercise has the potential to enhance subsequent performance by accelerating the oxygen uptake (VO2) kinetics. The present study investigated the effects of two different intensities of prior exercise on pulmonary VO2 kinetics and exercisetime during subsequent exhaustive rowing exercise. It was hypothesized that in prior heavy, but not prior moderateexercise condition, overall VO2 kinetics would be faster and the VO2 primary amplitude would be higher, leading to longerexercise time at VO2max. Six subjects (mean 6 SD; age: 22.964.5 yr; height: 181.267.1 cm and body mass: 75.563.4 kg)completed square-wave transitions to 100% of VO2max from three different conditions: without prior exercise, with priormoderate and heavy exercise. VO2 was measured using a telemetric portable gas analyser (K4b2, Cosmed, Rome, Italy) andthe data were modelled using either mono or double exponential fittings. The use of prior moderate exercise resulted in afaster VO2 pulmonary kinetics response (t1 = 13.4163.96 s), an improved performance in the time to xhaustion(238.8650.2 s) and similar blood lactate concentrations ([La2]) values (11.861.7 mmol.L21) compared to the onditionwithout prior exercise (16.065.56 s, 215.3660.1 s and 10.761.2 mmol.L21, for t1, time sustained at VO2max and [La2], respectively). Performance of prior heavy exercise, although useful in accelerating the VO2 pulmonary kinetics responseduring a subsequent time to exhaustion exercise (t1 = 9.1861.60 s), resulted in a shorter time sustained at VO2max(155.5646.0 s), while [La2] was similar (13.561.7 mmol.L21) compared to the other two conditions. Although both priormoderate and heavy exercise ulted in a faster pulmonary VO2 kinetics response, only prior moderate exercise lead to improved rowing performance.
- Kinematical Analysis along Maximal Lactate Steady State Swimming IntensityPublication . Figueiredo, Pedro; Nazario, Rafael; Sousa, Marisa; Pelarigo, Jailton Gregório; Vilas-Boas, João Paulo; Fernandes, RicardoThe purpose of this study was to conduct a kinematical analysis during swimming at the intensity corresponding to maximal lactate steady state (MLSS). Thirteen long distance swimmers performed, in different days, an intermittent incremental protocol of n x 200 m until exhaustion and two to four 30-min submaximal constant speed bouts to determine the MLSS. The video analysis, using APAS System (Ariel Dynamics Inc., USA), allowed determining the following relevant swimming determinants (in five moments of the 30-min test: 0, 25, 50, 75, and 100%): stroke rate, stroke length, trunk incline, intracyclic velocity variation, propelling efficiency, index of coordination and the time allotted to propulsion per distance unit. An ANOVA for repeated measures was used to compare the parameters mean values along each moment of analysis. Stoke rate tended to increase and stroke length to decrease along the test; a tendency to decrease was also found for intracyclic velocity variation and propelling efficiency whereas the index of coordination and the propulsive impulse remained stable during the MLSS test. It can be concluded that the MLSS is not only an intensity to maintain without a significant increase of blood lactate concentration, but a concomitant stability for some biomechanical parameters exists (after an initial adaptation). However, efficiency indicators seem to be more sensitive to changes occurring during swimming at this threshold intensity.
- MEMBER´S RETENTION IN FITNESS: CONTRIBUTION OF THE QUALITY OF SERVICES, EXPECTATIONS, SATISFACTION IN LIFE AND IN THE CLUBPublication . Gonçalves, Celina; Sousa, Marisa; Paipe, Gustavo; Carvalho, Maria José