Muscle Hypertrophy: Complete Guide to Maximising Your Clients' Gains
Mechanical tension, metabolic stress, muscle damage: understand the mechanisms of hypertrophy to programme intelligently.
The 3 Mechanisms of Hypertrophy
Science identifies three main pathways for stimulating muscle growth.
1. Mechanical Tension
This is the primary stimulus. It is maximised by heavy loads and full range of motion. Compound exercises (squats, bench press, pull-ups) generate the greatest mechanical tension.
2. Metabolic Stress
Long sets with short rest periods create an accumulation of metabolites (lactate, hydrogen) that signals the body to build more muscle. This is the "pump" effect.
3. Muscle Damage
Eccentric contractions (lowering phase) create micro-tears that, during repair, lead to an increase in muscle cross-sectional area.
Optimal Parameters
| Parameter | Recommendation |
|---|---|
| Load | 60-80% of 1RM |
| Reps | 6-15 per set |
| Sets | 3-5 per exercise |
| Rest | 60-180 seconds |
| Weekly volume | 10-20 sets per muscle group |
| Frequency | 2x per week per group |
Progressive Overload
Without progression in loads or volume, no growth. Increase the load by 2.5 to 5 kg once your client reaches the top of the rep range with perfect technique.
Programming with I Train With You
Create your modules with all these parameters (sets, reps, loads, rest times) and assign them to your clients. Track load evolution across sessions directly from your dashboard.
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