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core stability · intermediate · mat
Seated Knee Tucks
anterior corehip flexorstrunk endurance
0.0s / 4.0s
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Rectus Abdominis
25%
Hip Flexors
20%
Trans. Abdominis
25%
Triceps
15%
Quads
10%
Trans. Abdominis 25% — deep, not shown on the figure
Sets
2–3
Reps
10–15
Hold
smooth tempo
Rest
45 sec
Distinct from the supine V-up: the hands share the load, so the pattern trains the tuck-and-extend rhythm at a friendlier intensity.