نتایج جستجو برای: landing biomechanics

تعداد نتایج: 17328  

Journal: :Military medicine 2010
Timothy C Sell Yungchien Chu John P Abt Takashi Nagai Jennifer Deluzio Mark A McGrail Russell S Rowe Scott M Lephart

The additional weight of combat and protective equipment carried by soldiers on the battlefield and insufficient adaptations to this weight may increase the risk of musculoskeletal injury. The objective of this study was to determine the effects of the additional weight of equipment on knee kinematics and vertical ground reaction forces (VGRF) during two-legged drop landings. We tested kinemati...

2014
H. Makaruk A. Czaplicki T. Sacewicz J. Sadowski

The aim of this study was to examine the chronic effects of single and repeated jumps training on vertical landing force (VGRF) and jump height in untrained men. The VGRF and jump height were compared after a six-week plyometric training programme containing single and repeated jumps, together with two additional parameters: landing time (LT) and range of the knee flexion during landing (KF). T...

Journal: :journal of research in rehabilitation sciences 0
فرج اله فتاحی farajollah fatahi هومن مینو نژاد hooman minoonejad محمدحسین علیزاده mohammad hossein alizadeh فرج اله فتاحی هومن مینو نژاد محمدحسین علیزاده

abstract introduction: identifying factors which cause the high incidence of acl is of great importance .the anterior shear forces are the primary mechanism of load sustained on the acl. during exercise, the activity of muscles and position of lower limbs may increase or decrease the anterior shear force. the purpose of this study is to investigate the relationship between the activity level of...

S.A. Fazelzadeh Haghighi, Seid H. Pourtakdoust,

Guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. In this study automatic landing control systems are introduced and an optimal landing control system is designed. The control system performance criteria are based on minimum control effort. The designed system is simulated for a tr...

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