Sentences with phrase «knee extensor muscles»
This means that the hip extensor and knee extensor muscles are producing force when they are at more moderate (and not short) muscle lengths.
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Typically, kneecaps lessen the force extensor muscles must exert to straighten the knee.
It is the only muscle of the group which crosses the hip joint and is a powerful knee extensor when the hip is extended, but is weak when the hip is flexed.
The vastus medialis (vastus internus or teardrop muscle) is an extensor muscle located medially in the thigh that extends the knee.
Among the lower body muscles, the plantar flexors display the highest proportion of type I muscle fibers, and the knee extensors display the lowest proportion of type I muscle fibers, as shown in the chart below, which presents the mean of the data from all currently available studies.
Given the equal roles of the hip and knee extensors in this exercise, it is difficult to identify whether the effects of squat training achieves improvements in COD ability through increases in quadriceps or hip extensor (adductor magnus, gluteus maximus, and hamstrings) muscle size.
As explained above, COD maneuvers most commonly involve force production when the hip extensors and knee extensors are at moderate muscle lengths (although the exact joint angles can vary widely between individuals and tasks).
Since strength is specific, then: strength training for the hip extensors and knee extensors with eccentric - only muscle actions or accentuated eccentric loading should lead to superior gains in COD ability compared to conventional strength training.
The researchers also tested the eccentric muscle endurance of the knee and hip flexors and extensors of all their subjects, then looked for correlations with the running economy results.
Since the hamstrings act as both hip extensors and knee flexors, they have muscle moment arms at both joints.
The patella, or knee cap, is a small bone buried in the tendon of the extensor muscles (the quadriceps muscles) of the thigh.