Efeitos de um programa de treino de força e do destreino na variabilidade da marcha em idosos de ambos os sexos: um estudo longitudinal

Publicações

Effects of a 16-week high-speed resistance training program on heart rate variability indices in community-dwelling independent older adults: A clinical trial

Publication . Duarte Martins, Alexandre; Fernandes, Orlando; Brito, João Paulo; Gonçalves, Bruno; Oliveira, Rafael; Batalha, Nuno

This study explored the impact of a 16-week high-speed resistance training (HSRT) program on heart rate variability (HRV) indices in independent older adults. The participants were divided into either an intervention group (IG, N = 40) or a control group (CG, N =39). The IG participated in supervised HSRT sessions three times weekly, comprising 5–6exerciseswith2–3setsand6–10 repetitions, which lasted 60–70 min. The CG did not engage in any exercise program. HRV indices, encompassing time, frequency, and non-linear, were recorded over a six-minute period. The ANCOVA results revealed significant improvements favoring the IG for mean RR (η2 p = 0.050), systolic blood pressure (η2 p = 0.126), and pulse pressure (η2 p = 0.157). Additionally, within-group analyses revealed significant increases in stress index (dunb = 0.52), sample entropy (dunb = 0.38), and DFA α1(dunb = 0.38) exclusively in the CG. This study highlights the significant potential of the HSRT to induce favorable changes in parasympathetic activity and reduce arterial stiffness.

2025-04Artigo de investigação

Acesso aberto

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The role of physical activity levels in retaining high-speed resistance training effects on body composition: a 1-year follow-up in older adults.

Publication . Duarte Martins, Alexandre; Batalha, Nuno; Fernandes, Orlando; Oliveira, Rafael; Gonçalves, Bruno; Brito, João Paulo

Purpose This study evaluated the influence of physical activity (PA) on the retention of body composition effects achieved through a 16-week high-speed resistance training (HSRT) program over a 1-year follow-up period. Methods Forty independent older adults participated in the supervised 16-week HSRT program. After the intervention ended, participants were encouraged to maintain high PA levels. At the 1-year follow-up, 36 participants completed the assessments and were divided into the light activity group (LAG, N = 20, age 70.00 ± 3.66 years) and the moderate-to-vigorous activity group (MVAG, N = 16, age 68.50 ± 2.09 years). Body composition ( InBody® S10), PA levels (International Physical Activity Questionnaire), and anthropometric measurements were assessed at four time points. Results Significant time effects were observed for several body composition parameters over the 1-year follow-up period, with large effect sizes. Specifically, MVAG revealed significant declines in weight (p = 0.002, dunb = −0.22), body mass index (p = 0.002, dunb = −0.30), and fat mass (%) (p = 0.028, dunb = −0.30) from post-intervention to the 1-year follow-up. Conversely, LAG demonstrated significant reductions in fat-free mass (p = 0.018, dunb = −0.14), muscle mass (p = 0.010, dunb = −0.15), and lean mass (p = 0.014, dunb = −0.14) from pre-intervention to the 6-month follow-up (p < 0.001, dunb = −0.18), with body cell mass also presenting significant declines from post-intervention to the 1-year follow-up (p = 0.035, dunb = −0.13). Despite an overall decline, PA remained relatively higher than pre-intervention, particularly for total weekly activity (minutes) and energy expenditure from moderate-to-vigorous PA. Conclusions This study highlights the benefits of engaging in at least moderate PA activities for retaining the effects achieved on a previous exercise program, particularly reductions in fat mass.

2026Artigo de investigação

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Palavras-chave

Medical and health sciences ,Medical and health sciences/Health sciences

Entidade financiadora

Fundação para a Ciência e a Tecnologia, I.P.

Número da atribuição

2021.04598.BD