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Unilateral or Bilateral Standing Broad Jumps: Which Jump Type Provides Inter-Limb Asymmetries with a Higher Reliability?
Pérez-Castilla, Alejandro; García-Ramos, Amador; Janicijevic, Danica; Miras-Moreno, Sergio; De la Cruz, Juan Carlos; Rojas, F Javier; Cepero, Mar.
Afiliação
  • Pérez-Castilla A; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
  • García-Ramos A; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
  • Janicijevic D; Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile.
  • Miras-Moreno S; University of Belgrade, Faculty of Sport and Physical Education, The Research Centre, Belgrade, Serbia.
  • De la Cruz JC; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
  • Rojas FJ; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
  • Cepero M; Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
J Sports Sci Med ; 20(2): 317-327, 2021 06.
Article em En | MEDLINE | ID: mdl-34211325
This study aimed to compare the between-session reliability of performance and asymmetry variables between unilateral and bilateral standing broad jumps (SBJ). Twenty-four amateur basketball players (12 males and females) completed two identical sessions which consisted of four unilateral SBJs (two with each leg) and two bilateral SBJs. Mean and peak values of force, velocity and power, and impulse were obtained separately for each leg using a dual force platform. Inter-limb asymmetries were computed using the standard percentage difference for the unilateral SBJ, and the bilateral asymmetry index-1 for the bilateral SBJ. All performance variables generally presented an acceptable absolute reliability for both SBJs (CV range = 3.65-9.81%) with some exceptions for mean force, mean power, and peak power obtained with both legs (CV range = 10.00-15.46%). Three out of 14 variables were obtained with higher reliability during the unilateral SBJ (CVratio ≥ 1.18), and 5 out of 14 during the bilateral SBJ (CVratio ≥ 1.27). Asymmetry variables always showed unacceptable reliability (ICCrange = -0.40 to 0.58), and slight to fair levels of agreement in their direction (Kappa range = -0.12 to 0.40) except for unilateral SBJ peak velocity [Kappa = 0.52] and bilateral SBJ peak power [Kappa = 0.51]) that showed moderate agreement for both SBJs. These results highlight that single-leg performance variables can be generally obtained with acceptable reliability regardless of the SBJ variant, but the reliability of the inter-limb asymmetries in the conditions examined in the present study is unacceptable to track individual changes in performance.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Teste de Esforço / Exercício Pliométrico / Perna (Membro) Limite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: J Sports Sci Med Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Espanha

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Teste de Esforço / Exercício Pliométrico / Perna (Membro) Limite: Adolescent / Adult / Female / Humans / Male Idioma: En Revista: J Sports Sci Med Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Espanha