Abstract:
PURPOSE:The purpose of this study was to analyse gender differences in neuromuscular behaviour of the gastrocnemius and vastus lateralis during the take-off phase of a countermovement jump (CMJ), using direct measures (ground reaction forces, muscle activity and dynamic ultrasound). METHODS:Sixty-four young adults (aged 18-25 years) participated voluntarily in this study, 35 men and 29 women. The firing of the trigger allowed obtainment of data collection vertical ground reaction forces (GRF), surface electromyography activity (sEMG) and dynamic ultrasound gastrocnemius of both legs. RESULTS:Statistically significant gender differences were observed in the jump performance, which appear to be based on differences in muscle architecture and the electrical activation of the gastrocnemius muscles and vastus lateralis. So while men developed greater peak power, velocity take-offs and jump heights, jump kinetics compared to women, women also required a higher electrical activity to develop lower power values. Additionally, the men had higher values pennation angles and muscle thickness than women. CONCLUSION:Men show higher performance of the jump test than women, due to significant statistical differences in the values of muscle architecture (pennation angle and thickness muscle), lower Neural Efficiency Index and a higher amount of sEMG activity per second during the take-off phase of a CMJ.
journal_name
Clin Physiol Funct Imagingjournal_title
Clinical physiology and functional imagingauthors
Rubio-Arias JÁ,Ramos-Campo DJ,Peña Amaro J,Esteban P,Mendizábal S,Jiménez JFdoi
10.1111/cpf.12369subject
Has Abstractpub_date
2017-11-01 00:00:00pages
741-749issue
6eissn
1475-0961issn
1475-097Xjournal_volume
37pub_type
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