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Full-Text Articles in Medicine and Health Sciences
The Effect Of Soleus Fatigue During Sidestep Cutting Maneuvers: Implications For The Acl, Michael William Ciesa
The Effect Of Soleus Fatigue During Sidestep Cutting Maneuvers: Implications For The Acl, Michael William Ciesa
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The soleus muscle is a monoarticular plantarflexor composed slow-twitch fatigue-resistant muscle fibers. Through its attachment to the proximal tibia, contraction of the soleus muscle in a closed kinetic chain (when the foot is planted) produces a posterior pulling force on the posterior proximal tibia. The anterior cruciate ligament (ACL) is responsible for preventing anterior displacement of the tibia relative to the femur. Through the production of a posterior pulling force on the tibia, soleus muscle contraction in a closed kinetic chain could help reduce strain on the ACL. Fatigue is a neuromuscular phenomenon that can alter biomechanical strategies during athletics …
The Influence Of Static Stretching Of Knee Flexors On Knee Biomechanics, Joshua David Perrin
The Influence Of Static Stretching Of Knee Flexors On Knee Biomechanics, Joshua David Perrin
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There is a greater incidence of non-contact anterior cruciate ligament (ACL) injury in female athletes compared to males. The higher rate of ACL injury in female athletes is most likely multifactorial and is influenced by intrinsic and extrinsic risk factors. This study examines the effects of an extrinsic factor — static stretching of the hamstrings on knee biomechanics. Twelve female athletes performed drop vertical jump (DVJ) tasks before and after a hamstrings static stretching protocol. Knee kinematics and kinetics were recorded during the contact phase of the DVJ. The results of this study revealed stretching had no significant effect on …