Os Efeitos Agudos e Crónicos do Treino Concorrente no Desempenho Físico e Cognitivo do Idoso: A Importância do Volume e da Velocidade de Execução

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Resistance Training in Older Adults: The Importance of Volume and Movement Velocity

Publication . Marques, Diogo Luís Sequeira Torgal; Marques, Mário António Cardoso; Neiva, Henrique Pereira

In the last decade, the prescription of resistance training (RT) volume based on monitoring the intra-set velocity loss (VL) in sportsmen has assumed great prominence among coaches and researchers. Nevertheless, to date, its applicability and efficacy in optimizing muscle and functional gains in older adults are unknown. Therefore, the general aim of the thesis was to analyze the effects of manipulating the RT volume through monitoring VL on strength, power, and functional capacity in older adults. As such, the following steps were adopted: i) review of the effects of single vs. multiple sets on muscular and functional adaptations in middle-aged and older adults; ii) comparison of the acute effects of low vs. high RT volume on physiological and neuromuscular parameters in older adults; iii) analysis of the effects of RT with 20% VL on strength, power, and functional capacity in older adults; iv) analysis of the effects of RT with 10% VL on strength, power, and functional capacity in older adults; v) analysis of the load-velocity-power relationship in resistance exercises in older adults; vi) comparison of the effects of 10 weeks of RT with 10% vs. 20% VL on strength, power, and functional capacity in older adults. The main results indicated: i) multiple sets induce greater muscular and functional gains than single sets; ii) high volume produces greater acute physiological and neuromuscular stress than low volume; iii) 10% and 20% VL induce strength, power, and functional capacity gains in older adults; iv) load-velocity regression equations allow estimating with high accuracy the training load in older adults; v) 10% VL is more efficient to induce muscular and functional gains than 20% VL since it needs less training volume; however, 20% VL appears to be necessary to optimize gains. Therefore, the results of the thesis suggest that manipulating the RT volume based on monitoring VL presents itself as an effective and efficient approach to improving strength, power, and functional capacity in older adults. Future studies should follow the defined research lines to strengthen the knowledge on this topic.

2023-04Doctoral thesis

Open access

Strength and Power Performance Changes During an In-Season Resistance Training Program in Elite Futsal Players: A Case Study

Publication . Marques, Diogo Luís; Ribeiro, João Nuno; Sousa, António Carlos; Travassos, Bruno; Marques, Mário Cardoso

In this study, we aimed to analyze (i) the strength and power changes after resistance training (RT) in elite futsal players, and (ii) the associations between the session rate of perceived exertion (sRPE) and perceived total quality recovery (TQR), and the sRPE and TQR with the volume load of the RT program. Ten elite futsal players (24.8 ± 5.4 years; 76.2 ± 7.1 kg; 1.77 ± 0.05 m) performed an in-season 8-week RT program twice per week. RT consisted of 2-3 sets x 3-6 reps at 45-65% of one-repetition maximum (1RM) with maximal velocities in the full squat and complementary exercises with the same volume. We assessed the TQR before every session, while the sRPE was calculated after each RT session. One week before and after the intervention, we measured the countermovement jump (CMJ) height, isometric hip adduction strength (IHAS), 1RM, and peak power (PP) in the full squat progressive loading test. After the 8-week training program, there was a significant improvement in most outcomes, yet the gains (%Δ) remained below the minimal detectable change (MDC), except for IHAS (CMJ: p < 0.05, %Δ = 6.7, MDC% = 7.2; IHAS: p < 0.001, %Δ = 19.1, MDC% = 14.6; 1RM: p > 0.05, %Δ = 9.2, MDC% = 21.5; PP: p < 0.05; %Δ = 14.4, MDC% = 22.4). We also found a significant negative correlation between TQR and the sRPE (r = -0.45, p < 0.001). Our data suggest that RT based on low-volume and low-to-moderate loads may not produce a sufficient stimulus to induce meaningful dynamic strength and power gains in elite futsal players, although it improves isometric strength. Furthermore, monitoring TQR before sessions may show coaches how the elite futsal player will perceive the session's intensity.

2022-09-01Journal article

Open access

Validity and Reliability of the Smart Groin Trainer for Measuring Hip Adduction Strength

Publication . Sousa, António Carlos; Marques, Diogo Luís; Calado, António Manuel; Pacheco, Carlos; Marinho, Daniel; Marques, Mário Cardoso; Travassos, Bruno

We analyzed the Smart Groin Trainer device's validity and reliability to measure the isometric hip adduction strength during the adductor squeeze strength test. Fifteen professional soccer players (25.33±4.06 years) and fifteen university students (21.60±1.76 years) participated in this study. All participants performed the squeeze strength test using two portable dynamometers: Smart Groin Trainer and Globus Ergometer. Three maximal isometric hip adduction contractions lasting 5s, interspersed by 3min rest intervals, were performed. Reliability was analyzed with intraclass correlation coefficients, standard error of measurements, and minimal detectable change. The absolute percent error and inter-device accuracy were also analyzed. Correlation analysis assessed the inter-device concurrent validity. The results found no significant differences (p>0.05) between devices in the squeeze strength test values in soccer players and university students. Inter-device comparisons revealed excellent levels of reliability and accuracy in soccer players. Concurrent validity measures revealed strong inter-device relationships in soccer players (r=0.89) and very strong relationships in university students (r=0.99). Intra-device analysis using the Smart Groin Trainer showed excellent relative and absolute reliability in tested soccer players. Our data demonstrated excellent levels of agreement between both dynamometers during the squeeze strength test, suggesting the Smart Groin Trainer as a valid, reliable, and accurate device to measure isometric hip adduction strength.

2022-04-01Journal article

Open access