Anatomy & Injury
Posterior Chain
The posterior chain refers to the interconnected system of muscles running along the back of the body, primarily the glutes, hamstrings, spinal erectors, and calves, often extended to include the lats and upper back. In strength and conditioning, posterior chain development is a foundational training priority because these muscles drive hip extension, which is the dominant mechanical action in sprinting, jumping, and most lower body athletic movements.
Why it gets so much attention
Most athletes, particularly those who have spent time sitting, are quad-dominant. Their anterior chain (quads, hip flexors) is disproportionately developed relative to their posterior chain. This imbalance has implications for both performance and injury risk. Weak glutes and hamstrings relative to the quads alter joint loading at the knee and hip, contribute to ACL injury risk, reduce sprint speed, and limit power production in Olympic lifts and jumping movements. Addressing posterior chain weakness is one of the most consistent corrections coaches make across all athlete populations.
Key training tools
The Romanian deadlift and single-leg RDL load the hamstrings and glutes through hip hinge at long muscle lengths. The GHD and Nordic hamstring curl develop the hamstrings specifically through knee flexion. Hip thrusts and glute bridges target the glutes at short muscle lengths where squats and deadlifts are least effective. The reverse hyper and back extension develop the spinal erectors with less spinal compression than heavy barbell work. A well-designed posterior chain program uses multiple tools because each addresses a different portion of the length-tension relationship and a different primary muscle group within the chain.
Related terms
Hamstring · GHD (Glute-Ham Developer) · Reverse Hyper · Eccentric Training · RFD (Rate of Force Development)