Machine Calf Extension — Muscles Worked & RPE Load Guide
FR: Extension mollets à la machine · High output close to 0 RIR with minimal CNS tax
Machine Calf Extension targets Calves as primary movers (1.0× set credit). Cam-matched resistance across sticking points.
Primary Movers (1.0×)
Calves
Full 1.0 hard-set credit per set
Secondary Synergists (0.5×)
Minimal synergists
Fractional 0.5 set stimulus
Equipment & Pattern
Machine
External / Standard Load
CSV Import Aliases
9
Strong, Hevy, Capua & Jefit
17-Muscle Fractional Recruitment & Weekly MEV–MRV Landmarks
Each working set ≥ RPE 6 triggers fractional hard-set credit toward Renaissance Periodization / Schoenfeld weekly hypertrophy landmarks.
| Muscle Group | Mechanical Role | Effort Share | Weekly Optimal Band (MEV–MAV) | Frequency & Research |
|---|---|---|---|---|
| Calves (Gastrocnemius & Soleus) | Primary (1.0× set) | 100% | 8–16 sets/wk (MRV 20) | 2–4x / week · Evidence |
Machine Calf Extension Worked Wathan RPE Prescription Table (kg)
Worked kg values computed for Machine Calf Extension using a worked 140.0 kg reference 1RM (Machine) rounded to 5 kg machine increments. Mechanics: Externally braced cam track; resistance curve: Cam-matched resistance across sticking points.
| Reps | RPE 9.5 | RPE 9 | RPE 8.5 | RPE 8 | RPE 7 |
|---|---|---|---|---|---|
| 3 reps | 0 kg (89%) | 0 kg (86%) | 0 kg (86%) | 0 kg (86%) | 0 kg (82%) |
| 5 reps | 0 kg (82%) | 0 kg (82%) | 0 kg (79%) | 0 kg (79%) | 0 kg (75%) |
| 8 reps | 0 kg (75%) | 0 kg (75%) | 0 kg (75%) | 0 kg (71%) | 0 kg (71%) |
| 10 reps | 0 kg (71%) | 0 kg (71%) | 0 kg (71%) | 0 kg (68%) | 0 kg (68%) |
| 12 reps | 0 kg (68%) | 0 kg (68%) | 0 kg (68%) | 0 kg (64%) | 0 kg (64%) |
Strong, Hevy & French/English CSV Import Labels
STRUGGL automatically maps these exact workout-tracker strings to canonical Machine Calf Extension volume and e1RM records on zero-login Wrapped CSV upload.
Extension mollets à la machine
Machine Calf Extension
calf machine
calf press on leg press
donkey calf raise
extension mollets à la machine
leg press calf raise
mollets assis
mollets presse
seated calf raise
seated calf raises
Taken-Rack Substitutes & Biomechanical Swaps
Ranked deterministically by weighted primary-muscle overlap inside the same measurement family.
Verified Peer-Reviewed Literature (PubMed & DOI)
| Peer-Reviewed Paper | Author & Journal | External Reference |
|---|---|---|
| Progressive overload without progressing load? The effects of load or repetition progression on muscular adaptations. | Plotkin (2022) · PeerJ | PubMed 36199287 ↗ |
| Greater Gastrocnemius Muscle Hypertrophy After Partial Range of Motion Training Performed at Long Muscle Lengths. | Kassiano (2023) · Journal of strength and conditioning research | PubMed 37015016 ↗ |
| Resistance training beyond momentary failure: the effects of past-failure partials on muscle hypertrophy in the gastrocnemius. | Larsen (2025) · Frontiers in psychology | PubMed 39995432 ↗ |