Full Body, Upper-Lower, or PPL — Which Training Split Is Best for Hypertrophy?

What research says

• A meta-analysis by Schoenfeld et al.
• (2016) found that training frequency of 2+ times per week produced significantly more hypertrophy than once weekly (effect size d=0.73).
• Importantly, when weekly volume is equated, the frequency advantage diminishes.
• Splitting volume across 2 sessions triggers muscle protein synthesis (MPS) twice per week — an advantage.
• However, if sufficient total volume can be achieved in one session, the gap narrows.

What research says

• When total weekly volume is equated, studies show minimal significant differences in hypertrophy between full-body and split training (Colquhoun et al.
• 2018).
• The frequency vs. volume debate loses meaning when weekly volume is matched.
• Full-body training advantages: higher per-muscle frequency.
• Split training advantages: easier to accumulate high volume per muscle per session.
• The optimal choice depends on weekly training days, recovery capacity, and personal preference.

What research says

• Direct RCT comparisons of PPL vs. other splits are limited, and there is no strong evidence that PPL is superior.
• 6-day PPL stimulates each muscle group twice weekly, but the same twice-weekly frequency can be achieved with upper-lower splits (4 days) or full-body programs (3 days).
• High-frequency 6-day programs are effective for intermediate-to-advanced trainees with high recovery capacity, but for novices or those with limited recovery, 3–4 day splits may achieve equivalent or better hypertrophy.