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- Phase angle cutoff value as a marker of the health status and functional capacity in breast cancer survivorsPublication . Martins, Alexandre; Oliveira, Rafael; Brito, João; Costa, Tiago; Ramalho, Fatima; Pimenta, Nuno; Santos-Rocha, RAAccurate predictive tools are key factors for cancer care. Phase angle (PhA) has been proposed as a marker of cellular health, particularly of cell-membrane integrity. Cutoff values have been proposed, including for cancer survivors. This study aimed to assess the usefulness of the proposed PhA cutoff, as a marker of bioelectrical impedance analysis (BIA) assessed health-status, and functional capacity in breast cancer (BC) survivors. This cross-sectional study included 25 women (50.6 ± 8.6 yrs) survivors of BC, divided into two groups according to the PhA reference value of 5.6◦ (group 1 [G1]: PhA ≤ 5.6◦ [n=13]; group 2 [G2]: PhA > 5.6◦ [n=12]) (Gupta et al. 2008). BIA-assessed health status parameters included: extracellular water (ECW), intracellular water (ICW), total body water (TBW), PhA, body mass, fat-free mass, muscle mass, body cell mass (BCM). Four functional tests were performed: 30 s chair-stand test, timed up and go test, ball throw test and 6-minute walking test. Results showed G2 had lower ECW/ICW ratio (p=0.001; ES=1.2), ECW/BCM ratio (p=0.001; ES=3.2) and ECW/TBW ratio (p=0.001; ES=4.8). There was no difference in functional capacity between groups. The results of the present study show that patients with higher PhA values have a higher ICW values and preservation in the ECW/ICW ratio, suggesting it’s a better cell membrane quality and integrity. Relation of both PhA and cell membrane integrity with functional capacity warrants further research.
- Comparison of the accuracy of a free 3D camera system with the Ariel performance systemPublication . Miranda-Oliveira, Paulo; Branco, Marco A. C.; Fernandes, Orlando J.; Santos-Rocha, RAThe aims were: (1) to determine the accuracy and time-consuming of the automatic digitalization feature of 3D motion analysis systems; and (2) to determine the reliability of the 3D position when a football player performed a hard kick with spin. Four high-speed cameras (Casio ZR200 (512x384)) with a 240 Hz field rate were used. Automatic scanning of the Kinovea® and APAS® software was used. The accuracy was determined through mean absolute error, maximum absolute error, mean standard deviation of absolute error, and the variability values. The reliability was calculated with the Intra-Class Correlation. The mean absolute error (3.62 to 3.78 mm), maximum absolute error (9.09 to 11.61 mm), mean standard deviation of absolute error (0.01 to 0.59 mm), variability values (<1 mm), and the auto-digitalization time (16 to 31 minutes) were calculated and were within the values obtained in the literature. The reliability was determined with the Intra-Class Correlation, and the results were higher than 0.90, warrantied a high consistency for chosen software. The accuracy and the reliability intra-operator were determined, and the results indicated that it is possible to apply the free 3D camera system, with consistency in free-kick analysis.
- Promoção da atividade física e do exercício durante a gravidez e o pós-parto. Guia para profissionais de saúdePublication . Santos-Rocha, RA; Silva, Maria-Raquel G.; Dias, Hélia; Jorge, Rui
- Effects of 8-week online, supervised high-intensity interval training on the parameters related to the anaerobic threshold, body weight, and body composition during pregnancy: a randomized controlled trialPublication . Yu, Hongli; Santos-Rocha, RA; Radzimiński, Łukasz; Jastrzębski, Zbigniew; Bonisławska, Iwona; Szwarc, Andrzej; Szumilewicz, AnnaWe aimed to assess the effects of an 8-week, online high-intensity interval training (HIIT) program on the parameters related to the anaerobic threshold (AT), body weight, and body compo sition in pregnant women. A total of 69 Caucasian women with an uncomplicated singleton preg nancy (age: 31 ± 4 years; gestational age: 22 ± 5 weeks; mean ± standard deviation) were randomly allocated to either an 8-week HIIT program (HIIT group) or to a comparative 8-week educational program (EDU group). Our most important finding was that even with the 8-week progression of pregnancy and physiological weight gain, the HIIT group maintained the same level of parameters related to AT: volume of oxygen at the AT (VO2/AT), percentage of maximal oxygen uptake at the AT (%VO2max/AT), and heart rate at the AT (HR/AT). In contrast, in the EDU group we observed a substantial deterioration of parameters related to the AT. The HIIT intervention substantially re duced the fat mass percentage (median: 30 to 28%; p < 0.01) and improved the total fat-free mass percentage (median: 70% to 72%; p < 0.01). In the EDU group, the body composition did not change significantly. An online, supervised HIIT program may be used to prevent the pregnancy-related risk of excessive weight gain and reduction in exercise capacity without yielding adverse obstetric or neonatal outcomes.
- 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.
- A Brief Review on Processes for Cartilage RepairPublication . Moura, Carla; Santos-Rocha, RA; Franco, Susana; Malça, Cândida; Galhano, Cristina; Henriques, Marta; Morouço, PedroThe aim of the present review was to highlight some of the available processes for cartilage repair and regeneration. Considering the high impact that cartilage degeneration has in the quality of life, in an aging society, efforts to promote better treatments are crucial. The current available processes have advantages and drawbacks, that should be further investigated, aiming to obtain tailored and successful repair. Finally, some suggestions for tissue engineering strategies are presented, so that the scientific community can debate pros and cons to be investigated.
- Promotion of physical activity and exercise during pregnancy and postpartum. Health professionals' guidePublication . Santos-Rocha, RA; Szumilewicz, Anna; Wegrzyk; Hyvärinen, Mathilde; de La Brusse, Claire; Schläppy, Franziska; Silva, Maria-Raquel G.; Oviedo-Caro, Miguel Angel
- 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).