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5 results on '"Vera-Ibañez A"'

1. Peripheral and central fatigue after high intensity resistance circuit training

Author

Márquez, Gonzalo, Romero-Arenas, Salvador, Marín-Pagán, Cristian, Vera-Ibañez, Antonio, Olmo, Miguel Fernández del, and Taube, Wolfgang

Subjects
Neuromuscular function, Metabolic response, bacterial infections and mycoses, Percepction of effort, Fatigue, Resistance training, Twitch interpolation technique
Abstract

Introduction: The aim of this study was to investigate the effects of high intensity resistance circuit (HIRC) and traditional strength training (TST) on neuromuscular fatigue and metabolic responses. Methods: Twelve trained young subjects performed HIRC and TST in a counterbalanced order with 1 week rest in-between. The amount of workload and the interset time for each local muscle group were matched (180 s), however, the time between successive exercises differed. The twitch interpolation technique was used to test neuromuscular function of the knee extensor muscles. Blood lactate concentration was used to evaluate metabolic responses. Results: Maximum voluntary contraction and resting potentiated twitch amplitude (Qtw) were significantly reduced after HIRC, but there were not changes after TST, while reductions in voluntary activation were similar. Lactate concentration increased significantly more after HIRC. Conclusions: The higher lactate concentration after HIRC probably impaired excitation-contraction coupling, indicating larger peripheral fatigue than after TST. Actividad Física y Deporte

Published
2017

2. Peripheral and central fatigue after high intensity resistance circuit training

Author

Gonzalo, Márquez, Salvador, Romero-Arenas, Cristian, Marín-Pagán, Antonio, Vera-Ibañez, Miguel, FernáNdez Del Olmo, and Wolfgang, Taube

Subjects
Male, Cerebellar Ataxia, Vestibular Diseases, Case-Control Studies, Muscle Fatigue, Humans, Female, Lactic Acid, Circuit-Based Exercise, Ulnar Nerve, Median Nerve
Abstract

The aim of this study was to investigate the effects of high intensity resistance circuit (HIRC) and traditional strength training (TST) on neuromuscular fatigue and metabolic responses.Twelve trained young subjects performed HIRC and TST in a counterbalanced order with 1 week rest in-between. The amount of workload and the inter-set time for each local muscle group were matched (180 s), however, the time between successive exercises differed. The twitch interpolation technique was used to test neuromuscular function of the knee extensor muscles. Blood lactate concentration was used to evaluate metabolic responses.Maximum voluntary contraction and resting potentiated twitch amplitude (QThe higher lactate concentration after HIRC probably impaired excitation-contraction coupling, indicating larger peripheral fatigue than after TST. Muscle Nerve 56: 152-159, 2017.

Published
2016

4. Peripheral and central fatigue after high intensity resistance circuit training

Author

Márquez, Gonzalo, Romero-Arenas, Salvador, Marín-Pagán, Cristian, Vera-Ibañez, Antonio, Olmo, Miguel Fernández del, Taube, Wolfgang, Márquez, Gonzalo, Romero-Arenas, Salvador, Marín-Pagán, Cristian, Vera-Ibañez, Antonio, Olmo, Miguel Fernández del, and Taube, Wolfgang

Abstract

Introduction: The aim of this study was to investigate the effects of high intensity resistance circuit (HIRC) and traditional strength training (TST) on neuromuscular fatigue and metabolic responses.Methods: Twelve trained young subjects performed HIRC and TST in a counterbalanced order with 1 week rest in-between. The amount of workload and the inter-set time for each local muscle group were matched (180 s), however, the time between successive exercises differed. The twitch interpolation technique was used to test neuromuscular function of the knee extensor muscles. Blood lactate concentration was used to evaluate metabolic responses.Results: Maximum voluntary contraction and resting potentiated twitch amplitude (Qtw) were significantly reduced after HIRC, but there were not changes after TST, while reductions in voluntary activation were similar. Lactate concentration increased significantly more after HIRC.Conclusions: The higher lactate concentration after HIRC probably impaired excitation-contraction coupling, indicating larger peripheral fatigue than after TST

5. Neural adaptations after short-term wingate-based high-intensity interval training.

Author

Vera-Ibañez A, Colomer-Poveda D, Romero-Arenas S, Viñuela-García M, and Márquez G

Subjects
H-Reflex physiology, Humans, Male, Muscle Contraction, Young Adult, Adaptation, Physiological physiology, High-Intensity Interval Training methods, Motor Neurons physiology, Muscle, Skeletal physiology
Abstract

Objectives: This study examined the neural adaptations associated with a low-volume Wingate-based High Intensity Interval Training (HIIT)., Methods: Fourteen recreationally trained males were divided into an experimental (HIIT) and a control group to determine whether a short-term (4 weeks) Wingate-based HIIT program could alter the Hoffmann (H-) reflex, volitional (V-) wave and maximum voluntary contraction (MVC) of the plantar-flexor muscles, and the peak power achieved during a Wingate test., Results: Absolute and relative peak power increased in the HIIT group (ABS_P peak : +14.7%, P=0.001; and REL_P peak : +15.0%, P=0.001), but not in the control group (ABS_P peak : P=0.466; and REL_P peak : P=0.493). However, no significant changes were found in the MVC (P>0.05 for both groups). There was a significant increase in H-reflex size after HIIT (+24.5%, P=0.004), while it remained unchanged in the control group (P=0.134). No significant changes were observed either in the V-wave or in the V wave /M wave ratio (P>0.05 for both groups)., Conclusion: The Wingate-based training led to an increased peak power together with a higher spinal excitability. However, no changes were found either in the volitional wave or in the MVC, indicating a lack of adaptation in the central motor drive.

Published
2017

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