Percorrer por autor "Duarte Martins, Alexandre António Ferreira"
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- Effect of different resistance training programs on Phase angle in young adults: a scoping reviewPublication . Vasconcelos, Tiago; Alves, Ana Sofia; Duarte Martins, Alexandre António Ferreira; Puda, Dominik; Oliveira, RafaelThis scoping review explored the effect of different strength training programs on Phase Angle, a marker of cellular health, in healthy young adults. A systematic search was conducted using PubMed, SciELO, Web of Science, Scopus, until April 2025, following the PRISMA framework (PICOS) for longitudinal controlled trials with healthy adults (18–35 years) undergoing strength training (dynamic/ isometric) for at least 4 weeks. Of 8722 records, four studies were included, revealing variable immediate effects of strength training on Phase Angle (increases, decreases, and no significant changes). The synthesised evidence suggests, however, that strength training protocols with higher training volumes and intensities may be associated with more favourable long-term changes in Phase Angle. It is concluded that, although strength training with higher volume and intensity may be beneficial, the immediate effects on Phase Angle are variable. Modalities such as low-load blood flow restriction training or low-frequency isometric training may not improve, or may even decrease, Phase Angle in the short term. Given the scarcity and heterogeneity of studies, this review is exploratory, and further research is needed to optimise Phase Angle through strength training in young adults
- Long-term impact of physical activity levels after high-speed resistance training on cardiac autonomic control in independent older adultsPublication . Duarte Martins, Alexandre António Ferreira; Fernandes, Orlando; Brito, João Paulo; Oliveira, Rafael; Gonçalves, Bruno; Batalha, NunoThis study investigated the influence of physical activity (PA) levels on the long-term retention of the effects on cardiac autonomic control, assessed by heart rate variability (HRV), following a 16-week high-speed resistance training (HSRT) program over a 12-month follow-up period. At 12-month follow-up period, 36 participants who completed the measurements were categorized into light activity group (LAG) and moderate-to-vigorous activity group (MVAG) based on their PA levels. HRV data were recorded over a 6-min period. Significant within-group differences were observed over time. In MVAG, systolic blood pressure was significantly lower at the 6-month follow-up compared to pre-intervention (dunb = −0.87), while in LAG, diastolic blood pressure was lower at the 12-month follow-up compared to post-intervention (dunb = −0.66). Additionally, MVAG demonstrated significantly higher mean RR values at the 12-month compared to the 6-month follow-up (dunb = 0.49). Moreover, minimum and mean heart rate values were significantly higher at the 6-month compared to the 12-month follow-up (dunb = −0.39 and dunb = −0.42, respectively) in MVAG. Lastly, Sample Entropy was significantly higher in LAG compared to MVAG at 12-month follow-up (dunb = −0.89). In conclusion, participants who maintained moderate-to-vigorous PA during the 12-month follow-up demonstrated better retention of parasympathetic-related indices effects, as well as overall autonomic nervous system markers.