Maximum recoverable volume (MRV)

Maximum recoverable volume (MRV) is the most training a client can recover from, usually expressed as working sets per muscle per week.^{1International Personal Trainer Academy, Certified Personal Trainer Textbook, p. 313.},^{2Israetel et al., Scientific Principles of Hypertrophy Training, p. 155.} Israetel and colleagues define it as the volume limit before overreaching, with no further growth expected if that volume is sustained.^{3Israetel et al., Scientific Principles of Hypertrophy Training, p. 11.} The International Personal Trainer Academy uses recovery by the body part’s next session as the limit.^{1International Personal Trainer Academy, Certified Personal Trainer Textbook, p. 313.}

The number varies between clients; 25 weekly sets for biceps is one example.^{2Israetel et al., Scientific Principles of Hypertrophy Training, p. 155.} At MRV, the client only just recovers from week to week, so that workload usually can’t be repeated for more than two consecutive weeks before performance drops.^{2Israetel et al., Scientific Principles of Hypertrophy Training, p. 155.}

In practice

• Start a mesocycle near minimum effective volume and build toward MRV.^{4Israetel et al., Scientific Principles of Hypertrophy Training, p. 62.}
• Watch for fewer reps at a given reps in reserve (RIR) in two consecutive sessions compared with the week before; Israetel and colleagues treat this as a sign that the client has reached MRV and needs fatigue reduction.^{5Israetel et al., Scientific Principles of Hypertrophy Training, p. 156.}
• Good diet and sleep help recovery but can’t compensate for training beyond MRV.^{5Israetel et al., Scientific Principles of Hypertrophy Training, p. 156.}

Helms and colleagues caution against treating the most volume a client can progress on as the optimal amount.^{6Helms et al., The Muscle & Strength Pyramid: Training, 2nd ed., p. 61.} They suggest 10 to 20 weekly sets per muscle group as a starting range.^{7Helms et al., The Muscle & Strength Pyramid: Training, 2nd ed., p. 62.}