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Unimodal and bimodal curves of ground reaction force-time profiles identify the drop jump performance.
Peng, Hsien-Te; Lai, Chien-Ting; Lin, Hung-Li; Wang, Li-I.
Afiliación
  • Peng HT; Department of Physical Education, Chinese Culture University, Taipei City, Taiwan.
  • Lai CT; Graduate Institute of Sport Coaching Science, Chinese Culture University, Taipei City, Taiwan.
  • Lin HL; Department of Physical Education and Kinesiology, National Dong Hwa University, Hualien, Taiwan.
  • Wang LI; Department of Physical Education and Kinesiology, National Dong Hwa University, Hualien, Taiwan.
Sports Biomech ; : 1-10, 2024 Jan 05.
Article en En | MEDLINE | ID: mdl-38180880
ABSTRACT
This study aimed to investigate the kinematics and kinetics differences in ground reaction force (GRF)-time profiles with uni- and bimodal curves (UNC and BIC) during the concentric phase of the drop jump (DJ). Twenty two male Physical Education college student who met UNC (N = 11) or BIC (N = 11) of the GRF-time profile of were recruited. Two force plates and eight infrared optical cameras were synchronised to collect the GRF and motion data during DJ from a 30-cm height. The Shapiro-Wilk test was used to assess the normality of data. The Wilcoxon test was used when data were not normally distributed. Otherwise, Independent t-tests were used to compare differences between the UNC and BIC groups for each dependent variable. The UNC group demonstrated shorter ground contact time, lower jump height, greater leg stiffness, greater peak power during the eccentric phase, less work during the eccentric and concentric phases, and greater hip and knee joint flexion and extension angle displacements (p < 0.05). No significant intergroup differences were found in reactive strength index (p > 0.05). The UNC and BIC of the GRF-time profiles can indicate whether athletes can practice DJ appropriately. UNC can be representative of a better DJ performance with an efficient stretch-shortening cycle function.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Sports Biomech Asunto de la revista: MEDICINA ESPORTIVA Año: 2024 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Sports Biomech Asunto de la revista: MEDICINA ESPORTIVA Año: 2024 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido