Key takeaways
- Intensity: Proximity to failure is the key metric; aiming for RIR 0–2 (RPE 8–10) provides a robust growth stimulus for most sets.
- Volume: Most muscles grow well with 4–12 hard sets per week (0–3 RIR). Fractional volume from compound lifts should be factored in to avoid over-training.
- Frequency: Training each muscle group at least twice per week (2x) is superior to once per week (1x) for maintaining elevated muscle protein synthesis.
- Rep Ranges: While 5–30 reps can work, the 5–12 range is practically ideal for balancing motor unit recruitment, tension, and manageable fatigue.
- Range of Motion: Full ROM should be the default to ensure tension across the entire contractile range. Lengthened partials can be a potent supplement but should not replace full ROM entirely.
- Sequencing: Perform your priority work first in the session and early in the week when systemic and local fatigue are lowest.
- Progressive Overload: Adding weight or reps is the result of muscle growth, not the cause. It serves as the most reliable indicator that your training is effective.
References
| # | Reference | Identifier |
|---|---|---|
| [1] | Pedrosa GF, et al. Partial range of motion training elicits favorable improvements in muscular adaptations when carried out at long muscle lengths. Eur J Sport Sci. 2022;22(8):1250–1260. | doi: 10.1080/17461391.2021.1927199 |
| [2] | Schoenfeld BJ, Ogborn D, Krieger JW. Dose-response relationship between weekly resistance training volume and increases in muscle mass: a systematic review and meta-analysis. J Sports Sci. 2017;35(11):1073–1082. | PMID: 27433992 |
| [3] | Hamaïde AA, Pelland JC, Remmert JF, et al. The resistance training dose-response: meta-regressions exploring the effects of weekly volume and frequency on muscle hypertrophy and strength gains. Sports Med. 2025. | doi: 10.1007/s40279-025-02183-x |
| [4] | Pak D. The minimum effective dose for hypertrophy: roughly four sets per muscle group per week. RP Strength. 2024. | Link |
| [5] | Gabriel DA, Kamen G, Frost G. Neural adaptations to resistive exercise: mechanisms and recommendations for training practices. Sports Med. 2006;36(2):133–149. | PMID: 16464122 |
| [6] | Helms ER, et al. Application of the repetitions in reserve-based rating of perceived exertion scale for resistance training. Strength Cond J. 2016;38(4):42–49. | doi: 10.1519/SSC.0000000000000218 |
| [7] | Refalo MC, et al. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy: a systematic review with meta-analysis. Sports Med. 2023;53:649–665. | doi: 10.1007/s40279-022-01784-y |
| [8] | Zourdos MC, et al. Novel resistance training-specific rating of perceived exertion scale measuring repetitions in reserve. J Strength Cond Res. 2016;30(1):267–275. | PMID: 26049792 |
| [9] | Beardsley C. Motor unit recruitment: what it is and why it matters for hypertrophy. SandC Research (Patreon). 2021. | Link |
| [10] | Schoenfeld BJ, et al. Effects of low- vs. high-load resistance training on muscle strength and hypertrophy in well-trained men. J Strength Cond Res. 2017;31(12):3508–3523. | PMID: 28834797 |
| [11] | Maeo S, et al. Lengthened partial repetitions elicit similar muscle hypertrophy as full range of motion during resistance training in trained individuals. Front Physiol. 2022;13:851236. | doi: 10.3389/fphys.2022.851236 |
| [12] | Phillips SM, Tipton KD, Aarsland A, Wolf SE, Wolfe RR. Mixed muscle protein synthesis and breakdown after resistance exercise in humans. Am J Physiol. 1997;273(1):E99–E107. | PMID: 9252485 |
| [13] | Schoenfeld BJ, Ogborn D, Krieger JW. Effects of resistance training frequency on measures of muscle hypertrophy: a systematic review and meta-analysis. Sports Med. 2016;46:1689–1697. | PMID: 27102172 |
| [14] | Schoenfeld BJ, Grgic J, Krieger JW. How many times per week should a muscle be trained to maximize muscle hypertrophy? A systematic review and meta-analysis. J Sports Sci. 2019;37(11):1286–1295. | PMID: 30558493 |
| [15] | Brigatto FA, et al. Similar muscular adaptations in resistance training performed two versus three days per week. J Hum Kinet. 2019;68:135–143. | PMC: 6724585 |
| [16] | Schoenfeld BJ, Contreras B, Krieger J, et al. Resistance training volume enhances muscle hypertrophy but not strength in trained men. Med Sci Sports Exerc. 2019;51(1):94–103. | PMID: 30153194 |
| [17] | Beardsley C. How lateral force transmission affects strength and hypertrophy. SandC Research (Medium). 2023. | Link |