What Is Training Volume?
Training volume is most practically measured as the number of hard sets per muscle group per week. A 'hard set' is one taken close to failure, within 3 reps of your maximum for that weight. Warm-up sets don't count.
Volume is the primary driver of hypertrophy (muscle growth). Too little volume and you won't stimulate enough growth. Too much and you can't recover, which also limits growth and increases injury risk.
MEV, Optimal and MRV
Dr Mike Israetel's volume landmarks give you a practical framework:
| Landmark | Meaning | Application |
|---|---|---|
| MEV | Minimum Effective Volume | Least sets that produce growth |
| MAV | Maximum Adaptive Volume | Optimal sets for most growth |
| MRV | Maximum Recoverable Volume | Most sets you can recover from |
Weekly Set Targets By Muscle
Evidence-based recommendations for weekly sets (hard sets only):
| Muscle Group | MEV | Optimal | MRV |
|---|---|---|---|
| Chest | 8 | 10-20 | 22 |
| Back | 10 | 14-22 | 25 |
| Shoulders | 8 | 12-20 | 22 |
| Biceps | 6 | 10-16 | 20 |
| Triceps | 6 | 10-14 | 18 |
| Quads | 8 | 12-18 | 20 |
| Hamstrings | 6 | 10-16 | 20 |
How To Progress Volume
Start at or just above MEV and add 1-2 sets per muscle per week throughout a training block (4-8 weeks). When you approach your MRV, indicated by increasing soreness, declining performance, or poor recovery, take a deload week at 50% of peak volume, then start a new block slightly higher than where you began.
Spreading weekly volume across 2-3 sessions per muscle group is more effective than hitting all sets in one session. Muscle protein synthesis lasts roughly 48 hours, so training each muscle twice weekly at equal volume outperforms once-weekly training.
