Resting |
The subjects were asked to lie down in the supine position. Their right abdominal muscles were measured while they were resting (no tension in the abdominal area). |
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ADM (imprint) |
The subjects were asked to lie down in the supine position with their upper back on a table and their feet on the floor. Before they performed the ADM, they were instructed to palpate their abdominal muscle just anteriomedially to their anterior super iliac spine, identify the muscle contraction when they coughed, and contract this muscle. |
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Bridging |
The subjects were asked to lie down in the supine position with their arms at their sides and their knees forming a 30° angle. They were then asked to raise their hips from the floor while keeping their shoulders down, with their body forming a straight line. |
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Roll-up |
The subjects were asked to lie down in the supine position. While they were breathing in, they were asked to gather their arms in the air above their body and tuck their chin in toward their body in preparation for assuming different postures. While they were breathing out, they were asked to roll up and lift their upper body starting from their head to their back and their waist with their arms. They were then instructed to draw in or contract their abdominal muscles. |
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One-leg raise |
The subjects were asked to lie down in the supine position. They were then instructed to perform an ADM and then raise their right leg to the end range while keeping their knee extended. They were then instructed to draw in or contract their abdominal muscles. |
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