Browsing by Author "Martins, Alexandre"
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- Aptidão física e qualidade de vida em indivíduos com deficiência intelectual e de desenvolvimentoPublication . Jacinto, Miguel; Brito, João; Oliveira, Rafael; Martins, Alexandre; Francisco, Ruben; Vitorino, AnabelaA maioria dos indivíduos com Deficiência Intelectual e de Desenvolvimento (DID) adota um estilo de vida sedentária e inativa, tendo consequentemente fraca capacidade funcional e de composição corporal, apresentando uma relação com o seu estado de saúde. Avaliar a composição corporal e averiguar a sua influência com a capacidade funcional/aptidão física, numa população com DID. 16 indivíduos com DID avaliados na composição corporal por bio impedância multifrequência, capacidade funcional e força dos membros inferiores, com recurso a dinamómetro isocinético. Não se verificaram diferenças, na capacidade funcional e nas variáveis da composição corporal, entre grupos com diferentes gras de deficiência. Verificou-se correlações entre o género diferenças significativas, na capacidade funcional e nas variáveis da composição corporal, entre grupos com diferentes graus de deficiência. Verificaram-se correlações entre o género e as variáveis da composição corporal, apresentando o género masculino valores mais favoráveis nas variáveis percentagem de massa gorda (%MG) (r= -0,758; p=0,001), gordura visceral (GV) (r= -0,589; p=0,016), massa celular corporal (MCC) (r= 0,625; p=0,010), água extra celular (AEC) / água corporal total (ACT) (r= -0,607; p=0,013) e no ângulo de fase (AF) a 50khz (r= 0,529; p=0,035). O rácio ACT/massa isenta de gordura (MIG) e o rácio AEC/ACT apresentam valores de indivíduo saudável, respetivamente, 73,26±0,36% e 0.36-0.39%. O AF foi menor no género feminino e nas idades mais avançadas, bem como com o aumento da %MG. O grau de deficiência parece não influenciar a capacidade funcional e as variáveis da composição corporal, nesta amostra. De salientar, o AF que reflete a boa integridade celular relacionado à proporção de AEC e de água intracelular, apresenta valores dentro dos parâmetros normais, ainda que baixos.
- Comparação do RAST em duas equipas de níveis competitivos diferentesPublication . Oliveira, Rodrigo; Paulo, Nelson; Remígio, Daniel; Brito, João Paulo; Martins, Alexandre; Oliveira, Rafael
- Comparative study of water parameters and functional capacity in women survivors of breast cancer as a function of the cut-off value of the phase anglePublication . Martins, Alexandre; Oliveira, Rafael; Brito, João; Costa, Tiago; Ramalho, Fátima; Pimenta, Nuno; Santos-Rocha, RAIn 2018, breast cancer (BC) registered 2,088,849 new cases worldwide and 626,679 deaths attributed to the disease (IARC, 2019). Phase angle (PhA) has been considered effective in assessing cell integrity in cancer patients (Schulz et al., 2017). Low PhA values are predictors of lower survival in this population (Pereira et al., 2018).
- Effect of exercise on phase angle in cancer patients: a systematic reviewPublication . Martins, Alexandre; Oliveira, Rafael; Brito, João; Costa, Tiago; Silva, Júlia; Ramalho, Fátima; Santos-Rocha, RA; Pimenta, NunoINTRODUCTION: Body composition is one of the main variables of interest in clinical practice in cancer patients. Specific markers from bioelectrical impedance analysis, such as phase angle (PhA), have been assuming increasing relevance in this population. The aim of the present systematic review was to study and systematise the effect of exercise on PhA in cancer survivors, as compared to control conditions, namely usual care, with no exercise. The effect of exercise on PhA in the population of cancer survivors is not yet established. EVIDENCE ACQUISITIONː This systematic review was conducted on October 13, 2021, through PubMed, Web of Science, Wiley Online Library, Directory of Open Access Journals, Science Direct and JSTOR, following PRISMA guidelines and PICOS model that include: cancer survivors with ≥18 years; intervention of any exercise program for the target group; comparison between intervention group and control group that followed control conditions, namely usual care, with no exercise; outcome related to PhA; and studies of randomized control trials. EVIDENCE SYNTHESIS: We founded a total of 1244 publications, using selected keywords. Eight studies were included in this systematic review, after inclusion/exclusion criteria considered. Compared with the control conditions, exercise training programs seem associated with a positive effect on PhA, both in solid tumours and haematologic cancer types, but only when using resistance exercise alone. According to the best evidence synthesis criteria, we could not conclude the superiority of any exercise program analysed in the value of the PhA. CONCLUSIONS: There were several exercise details that may have potential to be beneficial for PhA in cancer patients, including an early start of the exercise intervention (during treatment and immediately after discharge from hospital), the use of resistance exercise or/and aerobic exercise, and mainly a long follow-up period (≥ 4 months) to verify the structural effects of exercise on the PhA. However, there were no effects on the PhA value immediately after the intervention, regardless of the type of protocol and the intervention time.
- Effects of exercise programs on phase angle in older adults: a systematic review and meta-analysisPublication . Martins, Alexandre; Fernandes, Orlando; Oliveira, Rafael; Bilro, Vitor; Lopes, Gabriel; Parraça, José; Raimundo, Armando; Brito, JoãoThe purpose of this study was to review the evidence to determine the effects of exercise programs on phase angle (PhA) in older people.
- In-season body composition effects in professional women soccer playersPublication . Oliveira, Rafael; Francisco, Rúben; Brito, João; Martins, Alexandre; Fernandes, RenatoThe assessment of anthropometric and body composition variables has been considered crucial to improve soccer athletes’ performance and health. Thus, the aim of this study was to analyse the anthropometric and body composition effects in professional soccer women players
- In-season body composition effects in professional women soccer playersPublication . Oliveira, Rafael; Francisco, Ruben; Fernandes, R.; Martins, Alexandre; Nobari, Hadi; Clemente, Filipe Manuel; Brito, JoãoThis study aimed to analyze anthropometric and body composition effects in professional soccer women players across the early and mid-competitive 2019/20 season. Seventeen players (age, height, body mass, and body mass index of 22.7 ± 6.3 years, 167.5 ± 5.6 cm, 60.7 ± 6.6 kg and 21.6 ± 0.2 kg/m2) from a Portuguese BPI League team participated in this study. The participants completed ≥80% of 57 training sessions and 13 matches. They were assessed at three points (before the start of the season (A1), after two months (A2), and after four months (A3)) using the following variables: body fat mass (BFM), soft lean mass (SLM), fat-free mass (FFM), intracellular water (ICW), extracellular water (ECW), total body water (TBW), and phase angle (PhA, 50 Khz), through InBody S10. Nutritional intake was determined through a questionnaire. Repeated measures ANCOVA and effect sizes (ES) were used with p < 0.05. The main results occurred between A1 and A2 for BFM (−21.7%, ES = 1.58), SLM (3.7%, ES = 1.24), FFM (4%, ES = 1.34), ICW (4.2%, ES = 1.41), TBW (3.7%, ES = 1.04). Furthermore, there were significant results between A1 and A3 for FFM (4.8%, ES = 1.51), ICW (5%, ES = 1.68), and PhA (10.4%, ES = 6.64). The results showed that the water parameters improved over time, which led to healthy hydration statuses. The training load structure provided sufficient stimulus for appropriate physical fitness development, without causing negative disturbances in the water compartments.
- In-season internal and external training load quantification of an elite European soccer teamPublication . Oliveira, Rafael; Brito, João; Martins, Alexandre; Mendes, Bruno; Marinho, Daniel A.; Ferraz, Ricardo; Marques, Mário C.Elite soccer teams that participate in European competitions need to have players in the best physical and psychological status possible to play matches. As a consequence of congestive schedule, controlling the training load (TL) and thus the level of effort and fatigue of players to reach higher performances during the matches is therefore critical. Therefore, the aim of the current study was to provide the first report of seasonal internal and external training load that included Hooper Index (HI) scores in elite soccer players during an in-season period. Nineteen elite soccer players were sampled, using global position system to collect total distance, high-speed distance (HSD) and average speed (AvS). It was also collected session rating of perceived exertion (s-RPE) and HI scores during the daily training sessions throughout the 2015-2016 in-season period. Data were analysed across ten mesocycles (M: 1 to 10) and collected according to the number of days prior to a one-match week. Total daily distance covered was higher at the start (M1 and M3) compared to the final mesocycle (M10) of the season. M1 (5589m) reached a greater distance than M5 (4473m) (ES = 9.33 [12.70, 5.95]) and M10 (4545m) (ES = 9.84 [13.39, 6.29]). M3 (5691m) reached a greater distance than M5 (ES = 9.07 [12.36, 5.78]), M7 (ES = 6.13 [8.48, 3.79]) and M10 (ES = 9.37 [12.76, 5.98]). High-speed running distance was greater in M1 (227m), than M5 (92m) (ES = 27.95 [37.68, 18.22]) and M10 (138m) (ES = 8.46 [11.55, 5.37]). Interestingly, the s-RPE response was higher in M1 (331au) in comparison to the last mesocycle (M10, 239au). HI showed minor variations across mesocycles and in days prior to the match. Every day prior to a match, all internal and external TL variables expressed significant lower values to other days prior to a match (p<0.01). In general, there were no differences between player positions. Conclusions: Our results reveal that despite the existence of some significant differences between mesocycles, there were minor changes across the in-season period for the internal and external TL variables used. Furthermore, it was observed that MD-1 presented a reduction of external TL (regardless of mesocycle) while internal TL variables did not have the same record during in-season match-day-minus.
- In-season internal and external training monotony, strain and acute/chronic workload ratio variations between starters and non-starters of a top elite European soccer teamPublication . Oliveira, Rafael; Vieira, Luiz; Martins, Alexandre; Brito, João; Nalha, Matilde; Mendes, Bruno; Clemente, Filipe ManuelThe aim of this study was two-fold: (a) to describe the in-season variations of training monotony, training strain, and acute: chronic workload ratio (ACWR) through session rated perceived exertion (s-RPE), total distance and high-speed running (HSR); (b) to compare those variations between starters and non-starters. Seventeen professional players from an European First League team participated in this study. They were divided in two groups: starters (n=9) and non-starters (n=8). The players were monitored daily over a 41-week period of competition where 52 matches occurred during the 2015- 2016 in-season. Through the collection of s-RPE, total distance and HSR, training monotony, training strain and ACWR were calculated for each measure, respectively. Data were analysed across ten mesocycles (M: 1 to 10). Results revealed no differences between starters vs non-starters (p>0.05). M6 had a greater number of matches and displayed higher values in monotony (s-RPE, total distance and HSR), strain (only for total distance) and ACWR (s-RPE, TD and HSR). However, the variation patterns for all indexes displayed some differences. In conclusion, the values of both starters and non starters showed small differences between them and thus suggesting that the adjustments of training workloads that had been applied over the season helped to reduce differences according to the player status. Even so, there some variations over the season (microcycles and mesocycles) for the whole team. This study could be used as reference for future coaches, staff and scientists.
- In-season internal and external workload variations between starters and non-starters—a case study of a top elite european soccer teamPublication . Oliveira, Rafael; Palucci Vieira, Luiz H.; Martins, Alexandre; Brito, João; Nalha, Matilde; Mendes, Bruno; Clemente, Filipe ManuelBackground and Objectives: Interpretation of the load variations across a period seems important to control the weekly progression or variation of the load, or to identify in-micro- and mesocycle variations. Thus, the aims of this study were twofold: (a) to describe the in-season variations of training monotony, training strain and acute:chronic workload ratio (ACWR) through session ratings of perceived exertion (s-RPE), total distance and high-speed running (HSR); and (b) to compare those variations between starters and non-starters. Materials and Methods: Seventeen professional players from a European First League team participated in this study. They were divided in two groups: starters (n = 9) and non-starters (n = 8). The players were monitored daily over a 41-week period of competition where 52 matches occurred during the 2015-2016 in-season. Through the collection of s-RPE, total distance and HSR, training monotony, training strain and ACWR were calculated for each measure, respectively. Data were analyzed across ten mesocycles (M: 1 to 10). Repeated measures ANOVA was used with the Bonferroni post hoc test to compare M and player status. Results: The results revealed no differences between starters vs. non-starters (p > 0.05). M6 had a greater number of matches and displayed higher values for monotony (s-RPE, total distance and HSR), strain (only for total distance) and ACWR (s-RPE, TD and HSR). However, the variation patterns for all indexes displayed some differences. Conclusions: The values of both starters and non-starters showed small differences, thus suggesting that the adjustments of training workloads that had been applied over the season helped to reduce differences according to the player status. Even so, there were some variations over the season (microcycles and mesocycles) for the whole team. This study could be used as a reference for future coaches, staff and scientists.
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