Acute effects of different rest intervals between agonist-antagonist paired-sets in the neuromuscular system performance of young adults |
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| Affiliation: | 1. Master and PhD in Physical Education, College of Physical Education, Universidade de Brasilia (UnB), Brasilia, Brazil;2. Master in Rehabilitation Sciences, School of Physical Therapy, Universidade de Brasilia (UnB), Brasilia, Brazil;3. College of Physical Education, Universidade Federal de Goiás (UFG), Goiânia, Brazil;4. School of Physical Therapy, Universidade Federal de Mato Grosso Do Sul (UFMS), Campo Grande, Brazil;1. Clinical Laboratory of Experimental Neurorehabilitation, IRCCS Fondazione Santa Lucia, Rome, Italy;2. Department of Psychology, Sapienza University of Rome, Italy;3. Laboratory for the Study of Mind and Action in Rehabilitation Technologies, SmArt Lab, IRCCS Fondazione Santa Lucia, Rome, Italy;4. Aerospace and Mechanical Engineering Department, Sapienza University of Rome, Italy;5. Department of Medical and Oral Sciences and Biotechnologies, University “G.d''Annunzio”, Chieti-Pescara, Italy;6. Department of Life, Health and Environmental Sciences, University of L''Aquila, 67100, L''Aquila, Italy;1. Spanish Football Federation, Physiotherapy Team, Madrid, Spain;2. Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Madrid, Spain;3. Orthopaedic Surgery, Traumatology and Rehabilitation Department, Hospital Universitario Fundación Alcorcón, Madrid, Spain;4. Department of Preventive Medicine & Public Health, Universidad Rey Juan Carlos, Madrid, Spain;5. Baylor University Doctoral Program in Physical Therapy, Waco, TX, USA;1. Physiotherapy Department, Faculty of Health Sciences, University of Thessaly, 3rd km of Old National Road, GR-35100 Lamia, Greece;2. Cardiopulmonary Center, GR-38333 Volos, Greece |
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| Abstract: | IntroductionThe agonist-antagonist paired-sets (APS) is a resistance training that involves alternating between exercises for agonist/antagonist muscles of a joint, with little or no rest between then. There is evidence that APS is more strenuous than traditional methods, but evidence on the optimal RI between agonist-antagonist actions is unknown.ObjectiveThe aim of this study was to compare different rest intervals between agonist-antagonist actions during APS in young adults.MethodFifty healthy men (mean age 23.2 ± 2.8 years; 1.76 ± 0.1m height, 78.03 ± 8.1 kg) were included and performed three different agonist-antagonist paired-sets protocols separated by 72h, consisting of 4 sets of 10 repetitions. The protocols differed in terms of the rest interval between the knee flexion and extension movements: 0s (no rest); 60s and 120s. The rest intervals between exercise sets were standardized at 60s. Total work, peak torque, neuromuscular efficiency, surface EMG amplitude (sEMG, root mean square) and fatigue index obtained by processing of sEMG signal, were compared between rest intervals and exercise sets within each protocol.ResultsThere were no significant differences between rest intervals for total work, peak torque and neuromuscular efficiency (P > 0.05), but significant differences were found for sEMG and fatigue (P < 0.01), in which the protocol with 60s interval resulted in greater fatigue.ConclusionWe showed that peak torque, total work and neuromuscular efficiency were not different between RI. The 60s RI showed a lower sEMG and a greater muscle fatigue. Although there were no significant differences, the NME was higher in the 60s interval. |
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| Keywords: | Strength training Knee joint Electromyography Quadriceps muscle |
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