Push Pull Legs (PPL) and the Arnold split are the two most popular 6-day workout splits in bodybuilding. While both routines train every muscle group twice per week, they organize muscle groups under fundamentally different philosophies: PPL groups muscles by movement pattern, whereas the Arnold split pairs antagonistic muscle groups and dedicates an entire session to arms and shoulders.
For standalone breakdowns, read our push pull legs for beginners guide and the arnold split guide.
Side-by-Side Comparison Matrix
| Feature | Push Pull Legs (PPL) | Arnold Split |
|---|---|---|
| Organization Principle | Movement patterns (Push, Pull, Legs) | Antagonistic pairings & limb isolation |
| Day 1 Focus | Chest, Shoulders, Triceps (Push) | Chest & Back (Antagonists) |
| Day 2 Focus | Back, Rear Delts, Biceps (Pull) | Shoulders & Arms (Direct Arm Day) |
| Day 3 Focus | Quads, Hamstrings, Glutes, Calves (Legs) | Quads, Hamstrings, Glutes, Calves (Legs) |
| Arm Growth Priority | Moderate (Trained after heavy compounds) | Maximum (Trained fresh on separate day) |
| Shoulder Joint Stress | Low (All pressing grouped together) | Moderate (Shoulders used across Days 1 & 2) |
| Best For | Strength, powerlifting carryover, joint longevity | Arm/shoulder specialization, bodybuilding aesthetics |
Analyzing the Trade-Offs
1. The Arm Growth Factor
On Push Pull Legs, your triceps are already pre-fatigued from heavy bench presses and overhead presses before you perform a single set of tricep pushdowns. Similarly, your biceps are fatigued from heavy rows and pull-ups on pull day.
On the Arnold split, Day 2 is dedicated strictly to shoulders and arms. Your biceps and triceps are fresh, allowing you to lift heavier loads with higher focus, resulting in superior arm hypertrophy for lifters with stubborn arm development.
2. Shoulder Overlap & Joint Health
The primary critique of the Arnold split is shoulder overlap. On Day 1 (Chest & Back), the anterior deltoids assist heavily on chest presses. On Day 2, they are trained again with overhead presses and front raises.
PPL completely solves this by consolidating all horizontal and vertical pressing into one session (Push Day), providing a full 72 hours of shoulder recovery before the next push session.
Which Split Should You Choose?
- Choose Push Pull Legs if: Your primary goals are compound pressing strength, balanced overall development, and minimizing shoulder and elbow tendonitis.
- Choose the Arnold Split if: Your arms and shoulders are lagging behind your chest and back, you thrive on massive upper-body pumps, and your recovery capacity is high.
Frequently Asked Questions
- What is the main difference between Push Pull Legs and the Arnold split?
- Push Pull Legs organizes training by movement mechanics (Push: Chest/Shoulders/Triceps; Pull: Back/Biceps; Legs), while the Arnold split organizes by antagonistic muscle pairings (Chest/Back, Shoulders/Arms, Legs).
- Which split is better for arm growth: PPL or Arnold?
- The Arnold split is superior for direct arm and shoulder growth because it dedicates a separate day to arms and shoulders when they are completely fresh, whereas PPL trains arms at the end of exhausting compound pressing and pulling sessions.
- Which split has less joint overlap and better shoulder recovery?
- Push Pull Legs has less joint overlap because all pressing muscles (chest, front delts, triceps) are trained together in one workout, giving the shoulder joint 48 to 72 hours of complete rest before the next push session.
- Can you combine Push Pull Legs and the Arnold split?
- Yes, many advanced lifters run a hybrid 'PPL-Arnold' 6-day split: Day 1 Push, Day 2 Pull, Day 3 Legs, Day 4 Chest & Back, Day 5 Shoulders & Arms, Day 6 Legs, Day 7 Rest.
- Which split is better for pure compound strength?
- Push Pull Legs is generally better for compound barbell strength (bench press, overhead press, deadlifts) because pressing mechanics and pulling mechanics are strictly compartmentalized without overlapping fatigue.