Effect of Different Recoveries During HIIT Sessions on Metabolic and Cardiorespiratory Responses and Sprint Performance in Healthy Men.

ABSTRACT: Germano, MD, Sindorf, MAG, Crisp, AH, Braz, TV, Brigatto, FA, Nunes, AG, Verlengia, R, Moreno, MA, Aoki, MS, and Lopes, CR. Effect of different recoveries during HIIT sessions on metabolic and cardiorespiratory responses and sprint performance in healthy men. J Strength Cond Res 36(1): 121-129, 2022-The purpose of this study was to investigate how the type (passive and active) and duration (short and long) recovery between maximum sprints affect blood lactate concentration, O2 consumed, the time spent at high percentages of V̇o2max, and performance. Subjects were randomly assigned to 4 experimental sessions of high-intensity interval training exercise. Each session was performed with a type and duration of the recovery (short passive recovery-2 minutes, long passive recovery [LPR-8 minutes], short active recovery-2 minutes, and long active recovery [LAR-8 minutes]). There were no significant differences in blood lactate concentration between any of the recoveries during the exercise period (p > 0.05). The LAR presented a significantly lower blood lactate value during the postexercise period compared with LPR (p < 0.01). The LPR showed a higher O2 volume consumed in detriment to the active protocols (p < 0.001). There were no significant differences in time spent at all percentages of V̇o2max between any of the recovery protocols (p > 0.05). The passive recoveries showed a significantly higher effort time compared with the active recoveries (p < 0.001). Different recovery does not affect blood lactate concentration during exercise. All the recoveries permitted reaching and time spent at high percentages of V̇o2max. Therefore, all the recoveries may be efficient to generate disturbances in the cardiorespiratory system.

Excess Post-Exercise Oxygen Consumption and Substrate Oxidation Following High-Intensity Interval Training: Effects of Recovery Manipulation.

The recovery manipulation during high-intensity interval training (HIIT) may have the potential to modulate the responses of post-exercise energy metabolism. The purpose of this study was to investigate how the type (i.e., passive and active) and duration (i.e., short and long) of the recovery between the intervals in HIIT affect the excess post-exercise oxygen consumption (EPOC) and oxidation of fats and carbohydrates during the post-exercise recovery. Eight physically active men performed a maximal incremental test, to determine the peak oxygen consumption (V̇O2peak) and the first ventilatory threshold (VT), and four HIIT exercise sessions on a treadmill. The HIIT exercise sessions consisted of 5 intervals interspersed with 4 recovery periods; each interval was sustained until exhaustion, and the intensity was set at the V̇O2peak velocity; recoveries were passive, active (VT velocity), short (2-min), or long (8-min). The HIIT exercise sessions were performed in a random and crossed manner. After the HIIT exercise sessions, EPOC and oxidation of fats and carbohydrates were measured during the 120-min of post-exercise recovery. There were no differences in the EPOC among the exercise sessions (p = 0.56). There were no differences among the exercise sessions in the amount of energy expended on the oxidation of fats (p = 0.78) and carbohydrates (p = 0.91) during the post-exercise recovery. The recovery manipulation during HIIT does not affect the EPOC and post-exercise fat and carbohydrate oxidation. One can choose the type and duration of recovery, knowing that the post-exercise substrate oxidation and EPOC responses will be preserved.

Are there relationship between internal and external load of aerobic training with heart rate variability in women? / Há relação da carga interna e externa do treinamento aeróbio com variabilidade da frequência cardíaca em mulheres?

ABSTRACT The purpose was to investigate the relationship between internal training load (ITL), external training load (ETL) and heart rate variability (HRV) in women. 16 women (48.2 ± 6.4 yrs) performed HRV recordings (i.e. lnRMSSD - cardiovagal modulation) and Incremental Shuttle Walk Test (ISWT) before and after 12 aerobic training sessions. HRV threshold (HRVT) were used to prescribe aerobic ETL. The session rating of perceived exertion (s-RPE) was analyzed and served as the measure of ITL. The score found for ITL in the 12 sessions was 2878 ± 380 arbitrary units and ETL were 36822 ± 5852 m. A significant difference was observed in the lnRMSSD (3.14 ± 0.30 vs. 3.43 ± 0.38 ms−1; P = 0.001). There were observed large correlation between lnRMSSD at baseline vs ISWT (r = 0.73, P = 0.001), HRVT (r = 0.67, P = 0.004) and ITL (r = 0.62, P = 0.011). Very large correlation between individual smallest worthwhile change lnRMSSD after training and ITL (r = 0.81, P = 0.0001) was observed. There is a strong association between the HRV and aerobic performance (HRVT and ISWTdistance) and strong relationship between HRV and the potential to accumulate ITL, but not aerobic ETL in women.

RESUMO O objetivo foi investigar a relação da carga interna de treinamento (CIT), carga externa de treinamento (CET) e variabilidade da frequência cardíaca (VFC) em mulheres. 16 mulheres (48,2 ± 6,4 anos) realizaram medidas de VFC em repouso (variável lnRMSSD - modulação cardiovagal) e o teste incremental de caminhada (TIC) antes e depois de 12 semanas de treinamento aeróbio. O limiar da VFC (LVFC) foi utilizado para prescrição da CET. A percepção subjetiva de esforço (PSE) foi utilizada para cálculo da CIT. O valor de CIT encontrado nas 12 sessões foi de 2878 ± 380 unidades arbitrárias e para CET de 36822 ± 5852 m. Foi observada diferença significativa para lnRMSSD (3,14 ± 0,30 vs. 3,43 ± 0,38 ms−1; P = 0.001). Verificou-se uma correlação grande entre lnRMSSD basal e TIC (r = 0.73, P = 0.001), LVFC (r = 0.67, P = 0.004) e CIT (r = 0.62, P = 0.011). Foi encontrada uma correlação muito grande entre a mínima diferença detectável individual do lnRMSSD após treinamento e CIT. Conclui-se que há uma forte relação entre VFC e performance aeróbia (LVFC e TICdistância), VFC e acúmulo de CIT, porém, sem relação com a CET acumulada nas 12 semanas nas mulheres estudadas.

Effect of Inspiratory Muscle Training on Performance of Handball Athletes.

Inspiratory muscle training (IMT) is a strategy that has been used to improve performance in different sports modalities. This study investigated the effects of an IMT program on respiratory muscle strength and resistance as well as aerobic physical performance (PP) of handball athletes. Nineteen 20 ± 3 year-old male athletes were allocated into an experimental (EG, n = 10) or a placebo group (PG, n = 9). Their respiratory muscle strength was evaluated by measuring the maximum inspiratory and expiratory pressures (MIP and MEP), muscular respiratory resistance by maximum voluntary ventilation (MVV) and aerobic PP by the cardiopulmonary exercise test. The study was designed to evaluate the effects of a 12-week IMT program with five sessions a week. A significant difference was observed in the pre and post IMT values of the MIP (170 ± 34 to 262 ± 33 cmH2O) and MEP (177 ± 36 to 218 ± 37 cmH2O) in the EG, and MIP (173 ± 45 to 213 ± 21 cmH2O) in the PG, with a large effect size for the MIP, when the groups were compared. MVV showed a significant increase (162 ± 24 to 173 ± 30 L) in the EG, with a small effect size. There was a significant difference in maximum oxygen uptake (54 ± 8 to 60 ± 7 ml/kg/min) in aerobic PP. Oxygen uptake at the respiratory compensation point (RCP) (46 ± 6 to 50 ± 5 ml/kg/min), with a moderate effect size for both variables, was observed in the EG after IMT. We concluded that IMT provided a significant increase in respiratory muscle strength and resistance, contributing to increased aerobic PP in the EG, which suggests that IMT could be incorporated in handball players' training.

Duas semanas de pré-temporada melhoram a velocidade e força máxima de membros inferiores em jogadores profi ssionais de futebol? / Two weeks pre-season improve velocity and maximal strength lower limbs in professional soccer players?

A preparação física durante a pré-temporada é extremamente importante para incremento e manutenção da performance. No entanto, o tempo de preparação de jogadores profi ssionais de futebol tem sido cada vez menor em função de um extenso calendário de jogos. Verifi car o efeito em curto prazo (duas semanas) de um programa de treinamento físico em conjunto com o treinamento técnico/tático no desenvolvimento da força máxima absoluta e relativa, e na velocidade de jogadores profi ssionais de futebol. 15 atletas profi ssionais (26 ± 2,6 anos; 79,7 ± 9,3 kg; 183,8 ± 5,7 cm; 12,4 ± 2,5 %G) que disputavam a série A1 do campeonato paulista participaram do presente estudo. Foram realizadas duas semanas de treinamento durante a pré-temporada. A organização das sessões envolveu treinamentos de força máxima, potência, resistência de força e resistência anaeróbia. Foram mensuradas a performance de sprint 15m, a força máxima absoluta e relativa (agachamento) pré e pós-programa de treinamento físico. Foi observado melhora signifi cante na velocidade de sprint 15m (Pré 2,48 ± 0,10 s x Pós 2,40 ± 0,08 s; P<0,05; TE = moderado 0,80), bem como a força muscular de membros inferiores tanto em valores absolutos (kg) (Pré 121,6 ± 23,8 x Pós 138,5 ± 26,0; P<0,05; TE = moderado 0,71; Δ% = 12,2), quanto relativos (kg/kg-1) (Pré 1,50 ± 0,25 x Pós 1,73 ± 0,34; P<0,05; TE = moderado 0,92; Δ% = 13,3). Um programa de treinamento físico com envolvimento de diferentes manifestações de forças, durante apenas duas semanas (pré-temporada) foi sufi ciente para incrementar signifi cantemente a força máxima (absoluta e relativa) e a velocidade de sprint 15m em jogadores profi ssionais de futebol....(AU)

The physical preparation during the pre-season is extremely important for enhance and maintenance of performance. However, the time of preparation of professional soccer players have been less due to an extensive schedule of games. The objective of this study was to determine the eff ect in the short term (two weeks) of a physical training program in conjunction with technical training/tactical development of the maximum absolute and relative strength, and speed of professional soccer players. 15 professional athletes (26 ± 2.6 years; 79.7 ± 9.3 kg; 183.8 ± 5.7 m, 12.4 ± 2.5% G) with experience in state-level competitions series A1 participated in the this study. There were two weeks of training during the pre-season. The organization of the sessions involved training maximal strength, power, strength resistance and anaerobic resistance. Sprint performance was assessed 15m, the maximum absolute strength and relative pre and post-exercise training program. We observed signifi cant improvement in sprint speed 15m (pre 2.48 ± 0.10 2.40 ± 0.08 sx Post s; P <0.05; TE = moderate 0.80) as well as muscle strength lower limb both in absolute values (kg) (Pre 121.6 ± 23.8 138.5 ± 26.0 x Post; P <0.05; TE = moderate 0.71; Δ% = 12.2) and relative (kg / kg-1) (1.50 ± 0.25 x Pre post 1.73 ± 0.34; P <0.05; moderate TE = 0.92, Δ = 13.3%). An exercise program involving multiple manifestations of forces, for only two weeks (pre-season) was suffi cient to signifi cantly increase the maximum strength (absolute and relative) and the 15m sprint speed in professional soccer players....(AU)

Water exercise in coronary artery disease patients, effects on heart rate variability, and body composition: A randomized controlled trial.

BACKGROUND AND PURPOSE: It is important to assess the effectiveness and efficiency of water-based training programs in order to prescribe it as an alternative in cardiac rehabilitation for patients who have coronary artery disease (CAD). In these patients, autonomic dysfunction is an important physiological change strongly associated with adverse outcomes, morbidity, and mortality. Given that the beneficial effects of physical training in CAD patients have been traditionally evidenced with programs involving land-based aerobic exercises, this study aims to evaluate the effects of water aerobic exercise training (WAET) on the autonomic modulation of heart rate (HR) and body composition, in the rehabilitation of CAD patients. METHODS: Twenty-six male subjects with CAD were randomly divided into a training group (n = 14), submitted to the WAET, and a control group (n = 12). The WAET consisted of 3 weekly sessions on alternate days, totalling 48 sessions. The analysis of HR variability was used to evaluate the autonomic modulation of HR, from the recording of R-R intervals for 15 min, at rest in the supine position, and the body composition was evaluated through the bioelectrical impedance analysis. RESULTS: Only the training group participants had improvement in the HR variability indices; patterns without variation decreased (0V, p = .005) and an increase of patterns of two different variations (p < .001), Shannon entropy (p = .02), and normalized conditional entropy (p = .03), whereas the control group had an increase of 0V (p = .04) and a decrease of normalized conditional entropy (p = .01). All body composition variables remained unchanged. CONCLUSIONS: The WAET protocol improved the cardiac autonomic modulation of patients with CAD and can be considered as exercise training strategy in cardiac rehabilitation programs.

Effect of linear and undulating training periodization models on the repeated sprint ability and strength of soccer players

Purpose: The aim of the study was to investigate the effect of linear and undulating strength-power training scheme on the repeated sprint ability (RSA) and lower body strength of soccer players. Method: Twenty soccer players (under-20 category) were split into 2 groups: the linear load (LL, n=10) and the undulating load (UL, n=10). In the commencement and at the end of the 6-week pre-season period, the RSA test (6 x 35m) and the 1RM parallel squat test (1RMsquat) were conducted. The LL and UL performed the same type and number of sessions. The training stimulus in the strength training was different between LL (Weeks 1 and 2 = Muscular Endurance; Weeks 3 and 4 = Strength; Weeks 5 and 6 = Power) and UL (daily load variation in the same week). Results: A improvement in RSAmean and 1RMsquat was detected in LL and in UL. No significant difference was noted between LL vs UL for all variables. Conclusion: Both groups improved maximal muscle strength in parallel back squat and RSA. UL induced a greater gain in RSA.(AU)

Efeito do intervalo entre sessões de exercício de força sobre o desempenho neuromuscular / Effect of interval between strength exercise sessions on neuromuscular performance / Efecto del intervalo entre sesiones de ejercicio de fuerza sobre el desempeño neuromuscular

INTRODUÇÃO: O intervalo de recuperação entre sessões é uma variável do treinamento de força fundamental para garantir a recuperação da capacidade neuromuscular. OBJETIVO: Comparar o efeito do tempo de recuperação entre sessões consecutivas de exercício de força sobre o desempenho neuromuscular de homens treinados. MÉTODOS: Oito homens treinados em força (21,6 ± 3,3 anos; 75,1 ± 11,3 kg; 178,2 ± 6,8 cm) realizaram duas sessões de exercício de força randomizadas e cruzadas, repetidas com intervalo de recuperação de 24h ou 48h. As sessões consistiram dos exercícios supinos reto, inclinado e declinado executadas em cinco séries de 10 repetições com intensidade de 70% de uma repetição máxima (1RM) para cada exercício. O desempenho neuromuscular pós-sessão de exercício (força, potência e velocidade), foi avaliado por meio de acelerômetro (Myotest(r)), com carga de 50% de 1RM, no exercício supino reto. RESULTADOS: Ambas as sessões (24 e 48h) apresentaram redução significante (P<0,05) na capacidade neuromuscular (força, potência e velocidade) pós-sessão de treinamento, apresentando retorno ao valor pré no intervalo de 24h (P>0,05). CONCLUSÃO: Os resultados sugerem que o intervalo de recuperação de 24h é suficiente para a recuperação do desempenho neuromuscular de membros superiores em homens treinados. .

INTRODUCTION: The rest interval between bouts is a crucial variable of resistance training to ensure recovery of neuromuscular capacity. OBJECTIVE: To compare the effect of rest interval between repeated bouts of resistance training on neuromuscular capacity of trained men. METHODS: Eight resistance-trained men (21.6 ± 3.3 years, 75.1 ± 11.3 kg, 178.2 ± 6.8 cm) performed two randomized and crossover resistance exercise bouts, repeated with rest interval of 24h or 48h. The bouts consisted of horizontal, inclined and declined bench press performed with five sets of 10 repetitions with an intensity of 70% of one repetition maximum (1RM) for each exercise. Neuromuscular performance post-exercise bout (strength, power and speed), was assessed with an accelerometer (Myotest(r)), with a load of 50% 1RM, in the bench press exercise. RESULTS: Both sessions (24 and 48h) showed significant reduction (P <0.05) in the neuromuscular capacity (strength, power and speed) post-exercise bout, returning to baseline values within 24h (P> 0.05). CONCLUSION: The results suggest that the rest interval of 24h is sufficient for recovery of neuromuscular performance in upper limbs of resistance-trained men. .

INTRODUCCIÓN: El intervalo de recuperación entre sesiones es una variable del entrenamiento de fuerza fundamental para garantizar la recuperación de la capacidad neuromuscular. OBJETIVO: Comparar el efecto del tiempo de recuperación entre sesiones consecutivas de entrenamiento de la fuerza en el rendimiento neuromuscular de hombres entrenados. MÉTODOS: Ocho hombres entrenados en fuerza (21,6 ± 3,3 años y 75,1 ± 11,3 kg, 178,2 ± 6,8 cm) realizaron dos sesiones de ejercicios aleatorios y cruzados, repetidas a intervalos de fuerza 24h o 48h de recuperación. Las sesiones consistieron en ejercicios supinos recto, inclinado y declinado siendo ejecutadas cinco series de 10 repeticiones con una intensidad de 70% de una repetición máxima (1RM) para cada ejercicio. El rendimiento neuromuscular después de la sesión de ejercicio (fuerza, potencia y velocidad), fue evaluado por medio de acelerómetro (Myotest(r)), con carga de 50% de 1RM en el ejercicio supino recto. RESULTADOS: Ambas sesiones (24 y 48 h) mostraron una reducción significativa (P<0,05) en la capacidad neuromuscular (fuerza, potencia y velocidad) después de la sesión de entrenamiento, presentando retorno al valor anterior en el intervalo de 24 h (P>0,05). CONCLUSIÓN: Los resultados sugieren que el intervalo de recuperación de 24 h es suficiente para la recuperación del desempeño neuromuscular de miembros superiores en hombres entrenados. .

Função autonômica cardíaca e nível de atividade física de pacientes com doença arterial coronariana / Cardiac autonomic function and level of physical activity in patients with coronary artery disease

O objetivo deste estudo foi verificar a relação entre modulação autonômica da frequência cardíaca (FC) e nível da atividade física habitual (AFH) em pacientes com doença arterial coronariana (DAC). Estudo transversal, amostra de 26 homens (59,6±4,2 anos), com tempo de 16±3 meses de diagnóstico da doença, divididos em dois grupos: usuários (GB, n=12) e não usuários de betabloqueadores (GSB, n=14). Para avaliar a modulação autonômica foi utilizada a variabilidade da frequência cardíaca (VFC) pelo registro dos intervalos R-R durante 15 minutos na condição de repouso na postura supina. Para avaliar o nível de AFH foi utilizado o questionário de Baecke. O escore total da AFH apresentou correlação positiva com os índices da VFC, para o GB e GSB, respectivamente: raiz quadrada da média dos quadrados das diferenças entre intervalos R-R normais adjacentes (r=0,499; P=0,039 e r=0,612; P=0,010), poder da banda de alta frequência (r=0,675; P=0,008 e r=0,470; P=0,045), entropia de Shannon (r=0,594; P=0,021 e r=0,453; P=0,042), entropia condicional normalizada (r=0,805; P=0,001 e r=0,559; P=0,019) e padrões de duas variações diferentes (r=0,872; P<0,001 e r=0,630; P=0,008); e correlação negativa com os índices: poder da banda de baixa frequência (r=-0,675; P=0,008 e r=-0,470; P=0,045), razão baixa/alta frequência (r=-0,675; P=0,008 e r=-0,466; P=0,047) e padrões sem variação (r=-0,782; P=0,001 e r=-0,684; P=0,004). Em pacientes com DAC, o maior nível de AFH está associado a maior modulação parassimpática e menor modulação simpática para o coração em repouso, sugerindo que níveis mais elevados de atividade física relacionam-se a melhor modulação autonômica cardiovascular nesta população.

The aim of this study was to investigate the relation between the autonomic modulation of heart rate (HR) and the level of habitual physical activity (HPA) in patients with coronary artery disease (CAD). This is a cross-sectional study with a sample of 26 men (age 59.6 ± 4.2) with CAD diagnosed for a mean time of 16±3 months, divided into two groups, users (GB, n=12) and non-users of beta-blockers (GSB, n=14). To evaluate the autonomic modulation, the analysis of heart rate variability (HRV) was performed from the registration of rest RR intervals for 15 minutes in the supine posture. Baecke questionnaire was applied to verify the level of HPA. The HPA total score correlated positively with indices of HRV respectively for GB and GSB: square root of the mean squared differences of successive normal RR intervals (r=0.499; P=0.039 and r=0.612; P=0.010), power of high frequency component (r=0.675; P=0.008 and r=0.470; P=0.045), Shannon entropy (r=0.594; P=0.021 and r=0.453; P=0.042) and normalized conditional entropy (r=0.805; P=0.001 and r=0.559; P=0.019), patterns of two different variations (r=0.872; P<0.001 and r=0.630; P=0.008), and correlated negatively with power of low frequency component (r=-0.675; P=0.008 and r=-0.470; P=0.045), low/high frequency ratio (r=-0.675; P=0.008 and r=-0.466; P=0.047) and no variation pattern (r=-0.782; P=0.001 and r=-0.684; P=0.004). In patients with CAD, high level of HPA was related to increased parasympathetic and reduced sympathetic modulation to the heart at rest, suggesting that higher levels of physical activity are related to better cardiovascular autonomic modulation in this population.

Carga para a aplicação de testes de 1-RM em exercícios de membros superiores em mulheres jovens treinadas e não treinadas / Load to the application of 1-RM tests in upper limbs of young women trained and untrained / Cargo por el uso de las pruebas de 1-RM en el miembro superior de las mujeres jóvenes entrenados y no entrenados

O objetivo do estudo foi propor valores de referência para a aplicação dos testes de 1-RM em mulheres jovens treinadas e não treinadas. 90 mulheres, de 18 a 31 anos, agrupadas em: 43 Treinadas (GT) e 47 Não Treinadas (GNT) foram submetidas aos testes de 1-RM nos seguintes exercícios: supino reto, desenvolvimento, rosca direta e tríceps testa. O GT apresentou maiores valores em relação ao GNT, em termos absolutos e relativos: supino reto (GT = 36,44 kg/0,63 e GNT = 27,34 kg/0,46), desenvolvimento (GT = 27,93 kg/0,49 e GNT = 22,70 kg/0,38), rosca direta (GT = 21,63 kg/0,37 e GNT = 15,57 kg/0,26) e tríceps testa (GT = 18,09 kg/0,31 e GNT = 12,55 kg/0,21). Os valores encontrados no estudo podem ser utilizados como referências de cargas para a aplicação dos testes de 1-RM.

The purpose of this study was to propose reference values to application of the 1-RM tests in young women trained and untrained. 90 women, 18-31 years, grouped into: 43 Trained (GT) and 47 Untrained (GNT) were submitted to 1-RM tests in the following exercises: bench press, shoulder press, biceps curl and lying triceps extension. GT showed higher values than GNT in absolute and relative terms: bench press (GT = 36.44 kg/0.63 and GNT = 27.34 kg/0.46), shoulder press (GT = 27.93 kg/0.49 and GNT = 22.70 kg/0.38), biceps curl (GT = 21.63 kg/0.37 and GNT = 15.57 kg/0.26) and lying triceps extension (GT = 18.09 kg/0.31 and GNT = 12.55 kg/0.21). The values found in this study can be used as references of load to application of 1-RM tests.

El objetivo del estudio fue proponer puntos de referencia para la aplicación de las pruebas de 1RM en mujeres jóvenes entrenados y no entrenados. 90 mujeres, 18-31 años, agrupados en: 43 entrenados (GT) y 47 no entrenados (GNT), se probaron para las pruebas de 1RM en los siguientes ejercicios: prensa de banca, prensa de hombros, curl con barra y extensión de tríceps. GT mostró valores más altos en comparación con el GNT en términos absolutos y relativos: prensa de banca (GT = 36,44 kg/0,63 y GNT = 27,34 kg/0,46), prensa de hombros (GT = 27,93 kg/0,49 y GNT = 22,70 kg/0,38), curl con barra (GT = 21,63 kg/0,37 y GNT = 15,57 kg/0,26) y extensión de tríceps (GT = 18,09 kg/0,31 y GNT = 12,55 kg/0,21). Los valores encontrados en el estudio pueden ser utilizados como referencia de cargo para la aplicación de las pruebas de 1RM.

Respostas cardiopulmonares agudas de mulheres no treinamento de força / Acute cardiopulmonary responses of women in strength training

OBJETIVO: Investigar as respostas cardiopulmonares de uma sessão de treinamento de força em mulheres jovens. MÉTODO: Participaram do estudo 23 mulheres, com idade entre 18 e 29 anos. Todas as voluntárias foram submetidas aos seguintes testes: cardiopulmonar e de uma repetição máxima (1-RM). O protocolo de treinamento de força teve ênfase em hipertrofia muscular, três séries de oito a 12 repetições a 70% de 1-RM, com intervalos de um minuto e 30 segundos entre as séries. Durante a sessão de treinamento foi realizada a medida das variáveis cardiopulmonares por meio de analisador de gases metabólicos e módulo de telemetria. RESULTADOS: Os resultados do consumo de oxigênio da sessão de treinamento foram de 8,43 ± 1,76 ml/kg/min e da frequência cardíaca de 108,08 ± 15,26 bpm. Os resultados do consumo de oxigênio e da frequência cardíaca do treino foram inferiores (p < 0,01) ao do limiar ventilatório e das reservas do consumo de oxigênio e da frequência cardíaca. CONCLUSÃO: Os dados obtidos indicam que o presente protocolo de treinamento de força proporcionou pequena sobrecarga ao sistema cardiorrespiratório de mulheres jovens.

OBJETIVE: Investigate the cardiopulmonary responses of one strength training session in young women. METHOD: Twenty-three women aged between 18 and 29 years participated in this study. All the volunteers were submitted to the following tests: cardiopulmonary and one-repetition maximum (1-RM). The strength training protocol had emphasis on muscular hypertrophy, three sets from eight to twelve repetitions under 70% of 1-RM, with a one minute thirty-second break between sets. During the training session, the cardiopulmonary variables were measured with a metabolic gas analyzer and a telemetry module. RESULTS: The results of the oxygen consumption in the training session were from 8.43 + 1.76 ml/kg/min and of the heart rate of 108.08 + 15.26 bpm. The results of the oxygen consumption and of the heart rate in the training were lower (p < 0.01) than in the ventilatory threshold and of the oxygen consumption and the heart rate reserves. CONCLUSION: The obtained data show that the present protocol of strength training provided low overload to the cardiopulmonary system of young women.