Marcio Antonio Gonsalves Sindorf

Effect of Inspiratory Muscle Training on Performance of Handball Athletes

Abstract 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.

Efeito do intervalo entre sessões de exercício de força sobre o desempenho neuromuscular

INTRODUCAO: O intervalo de recuperacao entre sessoes e uma variavel do treinamento de forca fundamental para garantir a recuperacao da capacidade neuromuscular.OBJETIVO: Comparar o efeito do tempo de recuperacao entre sessoes consecutivas de exercicio de forca sobre o desempenho neuromuscular de homens treinados.METODOS: Oito homens treinados em forca (21,6 ± 3,3 anos; 75,1 ± 11,3 kg; 178,2 ± 6,8 cm) realizaram duas sessoes de exercicio de forca randomizadas e cruzadas, repetidas com intervalo de recuperacao de 24h ou 48h. As sessoes consistiram dos exercicios supinos reto, inclinado e declinado executadas em cinco series de 10 repeticoes com intensidade de 70% de uma repeticao maxima (1RM) para cada exercicio. O desempenho neuromuscular pos-sessao de exercicio (forca, potencia e velocidade), foi avaliado por meio de acelerometro (Myotest(r)), com carga de 50% de 1RM, no exercicio supino reto.RESULTADOS: Ambas as sessoes (24 e 48h) apresentaram reducao significante (P 0,05).CONCLUSAO: Os resultados sugerem que o intervalo de recuperacao de 24h e suficiente para a recuperacao do desempenho neuromuscular de membros superiores em homens treinados.

Effect of interval between strength exercise sessions on neuromuscular performance

INTRODUCAO: O intervalo de recuperacao entre sessoes e uma variavel do treinamento de forca fundamental para garantir a recuperacao da capacidade neuromuscular.OBJETIVO: Comparar o efeito do tempo de recuperacao entre sessoes consecutivas de exercicio de forca sobre o desempenho neuromuscular de homens treinados.METODOS: Oito homens treinados em forca (21,6 ± 3,3 anos; 75,1 ± 11,3 kg; 178,2 ± 6,8 cm) realizaram duas sessoes de exercicio de forca randomizadas e cruzadas, repetidas com intervalo de recuperacao de 24h ou 48h. As sessoes consistiram dos exercicios supinos reto, inclinado e declinado executadas em cinco series de 10 repeticoes com intensidade de 70% de uma repeticao maxima (1RM) para cada exercicio. O desempenho neuromuscular pos-sessao de exercicio (forca, potencia e velocidade), foi avaliado por meio de acelerometro (Myotest(r)), com carga de 50% de 1RM, no exercicio supino reto.RESULTADOS: Ambas as sessoes (24 e 48h) apresentaram reducao significante (P 0,05).CONCLUSAO: Os resultados sugerem que o intervalo de recuperacao de 24h e suficiente para a recuperacao do desempenho neuromuscular de membros superiores em homens treinados.

Efecto del intervalo entre sesiones de ejercicio de fuerza sobre el desempeño neuromuscular

INTRODUCAO: O intervalo de recuperacao entre sessoes e uma variavel do treinamento de forca fundamental para garantir a recuperacao da capacidade neuromuscular.OBJETIVO: Comparar o efeito do tempo de recuperacao entre sessoes consecutivas de exercicio de forca sobre o desempenho neuromuscular de homens treinados.METODOS: Oito homens treinados em forca (21,6 ± 3,3 anos; 75,1 ± 11,3 kg; 178,2 ± 6,8 cm) realizaram duas sessoes de exercicio de forca randomizadas e cruzadas, repetidas com intervalo de recuperacao de 24h ou 48h. As sessoes consistiram dos exercicios supinos reto, inclinado e declinado executadas em cinco series de 10 repeticoes com intensidade de 70% de uma repeticao maxima (1RM) para cada exercicio. O desempenho neuromuscular pos-sessao de exercicio (forca, potencia e velocidade), foi avaliado por meio de acelerometro (Myotest(r)), com carga de 50% de 1RM, no exercicio supino reto.RESULTADOS: Ambas as sessoes (24 e 48h) apresentaram reducao significante (P 0,05).CONCLUSAO: Os resultados sugerem que o intervalo de recuperacao de 24h e suficiente para a recuperacao do desempenho neuromuscular de membros superiores em homens treinados.

CARGA PARA A APLICAÇÃO DE TESTES DE 1-RM EM EXERCÍCIOS DE MEMBROS SUPERIORES EM MULHERES JOVENS TREINADAS E NÃO TREINADAS

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 ex- tension. 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.

Load to the application of 1-RM tests in upper limbs of young women trained and untrained

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 ex- tension. 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.

Cargo por el uso de las pruebas de 1-RM en el miembro superior de las mujeres jóvenes entrenados y no entrenados

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 ex- tension. 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.