0%
Opening
0% · Heel strike
Tibia relative to femur
+ FLEXION− Not plotted
Gait cycle: 0%
Knee joint; schematic relative amplitude
+ EXTENSION− FLEXION
Schematic relative amplitude; not measured values.
Gait cycle: 0%
Knee joint; schematic relative amplitude
+ GENERATION− ABSORPTION
Schematic relative amplitude; not measured values.
Gait cycle: 0%
Vasti and biceps femoris activation; relative amplitude
+ Increasing activity− Not plotted
Schematic relative amplitude; not measured values.
Gait cycle: 0%
Graph explanations and references
Schematic curve shapes traced from Fig. 15.38, course textbook, ch. 15 (full citation pending); no values shown. EMG shows activation, not force or contraction type. ECC/CON labels are the conventional muscle–tendon-unit reading of joint torque and motion, not measured muscle-fibre behaviour.
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Chapters
Learning objectives
Relate quadriceps and hamstring activity to knee motion, internal torque, power and EMG across the gait cycle.