Muscle Activation Sequence in Flywheel Squats
Autor: | Darjan Smajla, Darjan Spudić, Nejc Šarabon, Michael David Burnard |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
medicine.medical_specialty
isoinercijska vadba mišična koordinacija Health Toxicology and Mutagenesis Posture overload lcsh:Medicine Squat Flywheel Article ekscentrična vadba Leg muscle 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation EMG muscle coordination medicine Humans Muscle Strength udc:796/799 Muscle Skeletal Functional movement Mathematics isoinertial training Leg Exercise intervention Electromyography lcsh:R Public Health Environmental and Occupational Health Muscle activation Resistance Training 030229 sport sciences Motor coordination preobremenitev Eccentric exercise eccentric exercise 030217 neurology & neurosurgery |
Zdroj: | International Journal of Environmental Research and Public Health, Vol 18, Iss 3168, p 3168 (2021) International Journal of Environmental Research and Public Health Volume 18 Issue 6 International journal of environmental research and public health, vol. 18, no. 6, 3168, 2021. |
ISSN: | 1661-7827 1660-4601 |
Popis: | Background: Muscle coordination is important for rational and effective planning of therapeutic and exercise interventions using equipment that mimics functional movements. Our study was the first to assess muscle coordination during flywheel (FW) squats. Methods: Time-of-peak electromyographic activation order was assessed separately for 8, 4, and 3 leg muscles under four FW loads. A sequential rank agreement permutations tests (SRA) were conducted to assess activation order and Kendall’s tau was used to assess the concordance of activation order across subjects, loads and expected order of activation. Results: SRA revealed a latent muscle activation order at loads 0.05, 0.075, and 0.1, but not at 0.025 kg·m2. Kendall’s tau showed moderate-to-strong concordance between the expected (proximal-to-distal) and the observed muscle activation order only at a load 0.025 kg·m2, regardless of the number of muscles analyzed. Muscle activation order was highly concordant between loads 0.05, 0.075, and 0.1 kg·m2. Conclusions: The results show a specific role of each muscle during the FW squat that is load-dependent. While the lowest load follows the proximal-to-distal principle of muscle activation, higher loads lead to a reorganization of the underlying muscle coordination mechanisms. They require a specific and stable muscle coordination pattern that is not proximal-to-distal. |
Databáze: | OpenAIRE |
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