What is Training Volume (Tonnage)?
Training volume (also called tonnage) quantifies the total mechanical work performed during resistance training. The formula is simple: Volume = Sets × Reps × Weight. For example, 4 sets of 8 reps at 225 lbs equals 7,200 lbs of volume.
Volume is the primary driver of muscle hypertrophy when intensity is adequate. Research by Schoenfeld et al. (2017) found a dose-response relationship: more volume (up to a point) leads to more muscle growth. However, exceeding your recovery capacity leads to overtraining and diminished returns.
Compound Exercise Muscle Overlap
Compound exercises work multiple muscle groups simultaneously. This calculator (in Advanced mode) tracks both direct and indirect volume:
Example: Bench Press
- Chest: 100% (primary)
- Triceps: ~50% (secondary)
- Shoulders: ~30% (secondary)
4 sets of bench = 4 chest sets + 2 tricep sets + 1.2 shoulder sets
Example: Back Squat
- Quads: 100% (primary)
- Glutes: ~60% (secondary)
- Hamstrings: ~30% (secondary)
- Core: ~30% (stabilizer)
Why it matters: Without overlap tracking, you might think you're doing 0 tricep sets when you've actually accumulated significant tricep volume from pressing movements. This helps prevent overtraining and optimize exercise selection.
Understanding Volume Landmarks (MEV, MAV, MRV)
Dr. Mike Israetel popularized the concept of volume landmarks—thresholds that define your training sweet spot:
~6-10 hard sets per muscle per week
The minimum volume needed to stimulate measurable muscle growth. Below this, you may maintain but not progress.
~10-20 hard sets per muscle per week
The "sweet spot" where you get the best gains relative to recovery cost. Most of your training should be here.
~20-25 hard sets per muscle per week
The upper limit you can recover from. Exceeding this leads to overtraining, injury risk, and stalled progress.
Key Principle: Start each training block at MEV, progressively increase toward MAV over 4-8 weeks, then deload. Never exceed MRV for extended periods. Individual landmarks vary based on training age, genetics, sleep, nutrition, and stress.
Scientific References
Volume-Hypertrophy Relationship:
- • Schoenfeld, B.J., Ogborn, D., & Krieger, J.W. (2017). "Dose-Response Relationship Between Weekly Resistance Training Volume and Increases in Muscle Mass." Journal of Sports Sciences, 35(11), 1073-1082.
- • Wernbom, M., Augustsson, J., & Thomeé, R. (2007). "The Influence of Frequency, Intensity, Volume and Mode of Strength Training on Whole Muscle Cross-Sectional Area in Humans." Sports Medicine, 37(3), 225-264.
Volume Landmarks & RPE Framework:
- • Israetel, M., Hoffmann, J., & Smith, C.W. (2021). "Scientific Principles of Hypertrophy Training." Renaissance Periodization.
- • Zourdos, M.C., et al. (2016). "Novel Resistance Training–Specific Rating of Perceived Exertion Scale Measuring Repetitions in Reserve." Journal of Strength and Conditioning Research, 30(1), 267-275.
Frequently Asked Questions
What are 'effective sets' and why do they matter?
Effective sets account for training intensity using RPE (Rate of Perceived Exertion). A set at RPE 8 counts as 1 effective set, while an easy set at RPE 6 only counts as 0.5. This better reflects actual muscle-building stimulus than raw set counts.
How does compound exercise muscle overlap work?
Compound exercises like bench press and squats work multiple muscles. This calculator tracks both direct volume (primary muscle) and indirect volume (secondary muscles). For example, 4 sets of bench press gives you 4 chest sets + ~2 tricep sets.
How should I adjust volume for different training phases?
During Accumulation (building phase): aim for full volume. Intensification (peaking): reduce volume 10-20%. Deload: reduce 40-60%. Maintenance: keep at 70-80%. The calculator adjusts MEV/MAV/MRV targets automatically.
What's the difference between Simple and Advanced mode?
Simple mode tracks basic volume (sets × reps × weight). Advanced mode adds: RPE-based effective sets, compound exercise muscle overlap tracking, periodization phase adjustments, and more detailed analytics.
How do I use the weekly planning feature?
Add multiple training days using 'Add Day'. Name each day (e.g., Push, Pull, Legs). Enter exercises for each day. The calculator sums your weekly volume across all days and shows total muscle group exposure.