Activation training facilitates gluteus maximus recruitment during weight-bearing strengthening exercises |
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| Affiliation: | 1. Programa de Engenharia Biomédica (COPPE), Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil;2. Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK;3. Department of Clinical and Experimental Sciences, Università degli Studi di Brescia, Brescia, Italy;4. Laboratorio di Ingegneria del Sistema Neuromuscolare (LISiN), Politecnico di Torino, Torino, TO, Italy;5. PolitoBIOMed Lab, Politecnico di Torino, Torino, Italy;1. Department of Orthopedic Surgery, Akita Hospital, 2–6-12 Takara, Chiryu City, Aichi 472–0056, Japan;2. Department of Rehabilitation, Akita Hospital, Chiryu, Japan;3. Department of Rehabilitation and Care, Seijoh University, 2–172 Fukinodai, Tokai City, Aichi 476–8588, Japan;1. Department of Biomedical Engineering, Lund University, Lund, Sweden;2. Department of Radiation Sciences, Radiation Physics, Biomedical Engineering, Umeå University, Umeå, Sweden;1. Department of Physical Education, College of Educational Sciences, Yonsei University, Seoul, South Korea;2. Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX, United States;3. Frontier Research Institute of Convergence Sports Science, Yonsei University, Seoul, South Korea;1. Department of Integrative Physiology, University of Colorado Boulder, USA;2. Department of Applied Physiology & Kinesiology, University of Florida, USA |
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| Abstract: | Given its tri-planar action at the hip, strengthening of gluteus maximus (GMAX) has been advocated as part of rehabilitation and injury prevention protocols for various musculoskeletal conditions. However, recruitment of GMAX during weight-bearing strengthening exercises can be challenging owing to the muscular redundancy at the hip for a given joint motion. The current study sought to determine if a 1-week activation program could result in greater GMAX recruitment during functional strengthening exercises. Pre- and post-training surface electromyography were collected from 12 healthy participants as they performed double- and single-leg squats. Between testing sessions, participants completed a GMAX activation training program consisting of isometric exercises with band resistance (twice per day for 7 days). Following the 1-week activation program, GMAX recruitment was found to increase by 57% during the double-leg squat (p = 0.005, Cohen’s r = 0.73) and 53% during the single-leg squat (p = 0.006, Cohen’s r = 0.70). Implementation of an initial GMAX activation program should be considered to facilitate neuromuscular adaptations that facilitate utilization of GMAX during hip strengthening exercises. |
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| Keywords: | Gluteus maximus Isometric training Activation training Recruitment Electromyography Neuromuscular adaptation |
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