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Body borne loads impact walk-to-run and running biomechanics.
Brown, T N; O'Donovan, M; Hasselquist, L; Corner, B D; Schiffman, J M.
Afiliación
  • Brown TN; Oak Ridge Institute for Science and Education (ORISE), Belcamp, MD, USA; U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA. Electronic address: tyler.n.brown4.ctr@mail.mil.
  • O'Donovan M; U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA.
  • Hasselquist L; U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA.
  • Corner BD; U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA.
  • Schiffman JM; U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA.
Gait Posture ; 40(1): 237-42, 2014.
Article en En | MEDLINE | ID: mdl-24794647
The purpose of this study was to perform a biomechanics-based assessment of body borne load during the walk-to-run transition and steady-state running because historical research has limited load carriage assessment to prolonged walking. Fifteen male military personnel had trunk and lower limb biomechanics examined during these locomotor tasks with three different load configurations (light, ∼6 kg, medium, ∼20 kg, and heavy, ∼40 kg). Subject-based means of the dependent variables were submitted to repeated measures ANOVA to test the effects of load configuration. During the walk-to-run transition, the hip decreased (P=0.001) and knee increased (P=0.004) their contribution to joint power with the addition of load. Additionally, greater peak trunk (P=0.001), hip (P=0.001), and knee flexion (P<0.001) moments and trunk flexion (P<0.001) angle, and reduced hip (P=0.001) and knee flexion (P=0.001) posture were evident during the loaded walk-to-run transition. Body borne load had no significant effect (P>0.05) on distribution of lower limb joint power during steady-state running, but increased peak trunk (P<0.001), hip (P=0.001), and knee (P=0.001) flexion moments, and trunk flexion (P<0.001) posture were evident. During the walk-to-run transition the load carrier may move joint power production distally down the kinetic chain and adopt biomechanical profiles to maintain performance of the task. The load carrier, however, may not adopt lower limb kinematic adaptations necessary to shift joint power distribution during steady-state running, despite exhibiting potentially detrimental larger lower limb joint loads. As such, further study appears needed to determine how load carriage impairs maximal locomotor performance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Carrera / Rango del Movimiento Articular / Caminata / Soporte de Peso Límite: Adolescent / Adult / Humans / Male Idioma: En Revista: Gait Posture Asunto de la revista: ORTOPEDIA Año: 2014 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Carrera / Rango del Movimiento Articular / Caminata / Soporte de Peso Límite: Adolescent / Adult / Humans / Male Idioma: En Revista: Gait Posture Asunto de la revista: ORTOPEDIA Año: 2014 Tipo del documento: Article Pais de publicación: Reino Unido