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Title: Isokinetic analysis of ankle and ground reaction forces in runners and triathletes
Authors: Luna, Natália Mariana Silva
Castilho Alonso, Angelica
Brech, Guilherme Carlos
Mochizuki, Luis
Nakano, Eduardo Yoshio
Greve, Júlia Maria D'Andrea
Assunto:: Fratura por stress
Sistema musculoesquelético
Tíbia - ferimentos e lesões
Tornozelos - ferimentos e lesões
Issue Date: Sep-2012
Publisher: Faculdade de Medicina da Universidade de São Paulo
Citation: LUNA, Natália Mariana Silva et al. Isokinetic analysis of ankle and ground reaction forces in runners and triathletes. Clinics, São Paulo, v. 67, n. 9, set. 2012. Disponível em: <>. Acesso em: 25 mar. 2013.
Abstract: OBJECTIVE: To analyze and compare the vertical component of ground reaction forces and isokinetic muscle parameters for plantar flexion and dorsiflexion of the ankle between long-distance runners, triathletes, and nonathletes. METHODS: Seventy-five males with a mean age of 30.26 (±6.5) years were divided into three groups: a triathlete group (n=26), a long-distance runner group (n = 23), and a non-athlete control group. The kinetic parameters were measured during running using a force platform, and the isokinetic parameters were measured using an isokinetic dynamometer. RESULTS: The non-athlete control group and the triathlete group exhibited smaller vertical forces, a greater ground contact time, and a greater application of force during maximum vertical acceleration than the long-distance runner group. The total work (180º/s) was greater in eccentric dorsiflexion and concentric plantar flexion for the non-athlete control group and the triathlete group than the long-distance runner group. The peak torque (60º/s) was greater in eccentric plantar flexion and concentric dorsiflexion for the control group than the athlete groups. CONCLUSIONS: The athlete groups exhibited less muscle strength and resistance than the control group, and the triathletes exhibited less impact and better endurance performance than the runners.
Licença:: Clinics - Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons (Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)). Fonte: Acesso em: 25 mar. 2013.
Appears in Collections:EST - Artigos publicados em periódicos

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