TAKEN-RACK SWAP · 75% MUSCLE OVERLAP

Ab Wheel vs Cable Twist

FR : Roulette abdominale ↔ Cable Twist

Switching from Ab Wheel (Bodyweight) to Cable Twist (Cable) drops fractional load on Lats, Lower Back while keeping 75% primary overlap. Compare exact 17-muscle fractional recruitment before swapping equipment mid-session.

Weighted Muscle Overlap
75%
Sum of min(coef A, coef B)
Primary Equipment
Bodyweight → Cable
Same rep/load measurement family
Load Transfer Protocol
Target RPE 7.5–8.5
Never assume 1:1 kg across leverages

Side-by-Side 17-Muscle Recruitment Delta

How primary mover (1.0× set) and synergist (0.5× set) allocation changes when swapping Ab Wheel for Cable Twist.

Muscle Group Ab Wheel Cable Twist Leverage Shift
Abdominals & Trunk Bracing Primary (75%) Primary (100%) +25% on Cable Twist
Lats (Latissimus Dorsi) Secondary (15%) — None -15% vs Ab Wheel
Lower Back (Spinal Erectors) Secondary (10%) — None -10% vs Ab Wheel

Load & Volume Conversion: Ab Wheel → Cable Twist

Worked weight heuristic: a 70 kg set on Ab Wheel (Bodyweight) maps roughly to 45 kg on Cable Twist (Cable; 2.5 kg jumps, curve: constant cable tension at peak lengthened position). Calibrate set 1 at RPE 8 so e1RM history for Ab Wheel remains unskewed. Because Cable Twist omits Lats, Lower Back, plan +2 extra weekly accessory sets for Lats, Lower Back if substituting long-term.

Supporting Sports-Science Literature

Study Title Lead Author & Year Verified Link
Electromyographic analysis of traditional and nontraditional abdominal exercises: implications for rehabilitation and training. Escamilla (2006) PubMed 16649890 ↗
The thoracolumbar fascia: anatomy, function and clinical considerations. Willard (2012) PubMed 22630613 ↗
Muscle activity levels in upper-body push exercises with different loads and stability conditions. Calatayud (2014) PubMed 25419894 ↗
Electromyographic studies in abdominal exercises: a literature synthesis. Monfort-Pañego (2009) PubMed 19362234 ↗

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