![]() | PRESWING (Sagittal plane)Orientation of ground reaction force vector (GRFV) in sagittal planeNormal GRF is located
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![]() | What effect will this have on joint motion and muscle activation?During preswing, ground reaction force produces
The body controls these moments with
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![]() | PRESWING (Frontal plane)Orientation of ground reaction force vector (GRFV) in frontal planeNormal GRF decreases in magnitude as body weight is shared between two limbs. The "shorter" vector reflects this. The vector passes near the axes of the subtalar, knee, and hip joints. |
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![]() | What effect will this have on joint motion and muscle activation?During preswing, ground reaction forces produce very small frontal plane moments around the subtalar, knee, and hip joints. The body need not develop significant muscle activity to respond to these frontal plane moments. |
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