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Biomechanical characteristics of adults walking in shallow water and on land.
Barela, Ana M F; Stolf, Sandro F; Duarte, Marcos.
Afiliação
  • Barela AM; Laboratory of Biophysics, Escola de Educação Física e Esporte, Universidade de São Paulo, Av. Prof. Mello Moraes 65, São Paulo/SP 05508-030, Brazil.
J Electromyogr Kinesiol ; 16(3): 250-6, 2006 Jun.
Article em En | MEDLINE | ID: mdl-16111894
Although water environment has been employed for different physical activities, there is little available information regarding the biomechanical characteristics of walking in shallow water. In the present study, we investigated the kinematics, ground reaction forces (GRF), and electromyographic (EMG) activation patterns of eight selected muscles of adults walking in shallow water and on land. Ten healthy adults were videotaped while walking at self-selected comfortable speeds on land and in water (at the Xiphoid process level). In both conditions there was a force plate embedded in the middle of each walkway to register the GRF components. Reflective markers were placed over main anatomical landmarks and they were digitalized later to obtain stride characteristics and joint angle information. In general, walking in water was different to walking on land in many aspects and these differences were attributed to the drag force, the apparent body weight reduction, and the lower comfortable speed during walking in shallow water. The joint range of motions (ROM) were not different, the segment ROM, magnitudes of GRF components, impact force, and impulse were different between the two conditions. The present results will contribute to a better understanding of this activity in the context of training and rehabilitation.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Natação / Água / Caminhada / Extremidade Inferior / Esforço Físico / Marcha Tipo de estudo: Clinical_trials Limite: Adult / Female / Humans / Male Idioma: En Revista: J Electromyogr Kinesiol Assunto da revista: FISIOLOGIA Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Natação / Água / Caminhada / Extremidade Inferior / Esforço Físico / Marcha Tipo de estudo: Clinical_trials Limite: Adult / Female / Humans / Male Idioma: En Revista: J Electromyogr Kinesiol Assunto da revista: FISIOLOGIA Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido