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Rest → load, working range

Joint angles · start → finish

Torso
10.0° → 10.0°
Hip
90.0° → 90.0°
Knee
92.0° → 92.0°
Shoulder
24.0° → 24.0°
Elbow
16.0° → 16.0°
Neck
-2.0° → -2.0°

Control

Rapid Contraction Ladder

4 sets: 10 fast contractions, 30s rest. Full release between every rep.

Difficulty 2 of 52.2 METs · Light

Equipment

  • No equipment needed

Muscle groups worked

  • Core

What it buys you

Builds the fast-twitch side of pelvic floor control, which is what responds in a surge.

Capacity trained

Control. Pelvic floor strength, speed and release. Governs timing, continence and orgasmic control.

Energy

Modelled kilocalories

Modelled energy cost for Rapid Contraction Ladder at 10, 20, 30 and 45 minutes for both reference bodies
Reference body10 min20 min30 min45 min
Male reference · 82 kg32 kcal63 kcal95 kcal142 kcal
Female reference · 68 kg26 kcal52 kcal79 kcal118 kcal

Energy figures are modelled from standard activity MET values (Ainsworth Compendium, 2011) and the ACSM equation, not measured on you. They scale linearly with your own body mass, so a body 10% heavier burns about 10% more at the same intensity.

kcal = METs × 3.5 × bodyweight(kg) ÷ 200 × minutes (ACSM)

Load is effort, not pain. If a movement hurts rather than works, stop and see a clinician. Lifting another person is strength training with a person-shaped load — build the pattern unloaded first.

Cross-reference

Positions this workout helps · 50

It serves Seated Astride, Standing, Elevated / Bridged and Kneeling. Every position in those families is listed below, hardest first.

Honest framing

Training makes a posture available and sustainable. It is capability work, not a treatment for anything, and no single session changes a number. Consistency over eight weeks does.

Free PQ assessment · 6 min

No account needed

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