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| The group of four anterior thigh muscles; rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius Paralysis affecting all four limbs An analysis in which the predominant muscular activity and the active muscle group during each phase of a movement are identified A biomechanical analysis in which the mechanical characteristics of the performance are not quantified but are observed and subjectively evaluated A biomechanical analysis in which the mechanical characteristics of the performance are measured and quantified |
| Quadriceps femoris Quadriplegia Qualitative anatomical analysis Qualitative biomechanical analysis Quantitative biomechanical analysis |