Clinical Kinetic Diagnostic

The Fallacy of Asymmetrical Training

Most lifters measure their strength through the classic "Big Three": the bench press, squat, and deadlift. However, the human body is not a collection of isolated parts; it is a highly integrated kinetic chain. If your overhead press severely lags behind your bench press, you are not simply plateauing in the gym—you are actively engineering an injury.

Force leakage occurs when an agonistic muscle (the prime mover) becomes too strong for its stabilizing antagonist. Your nervous system detects this instability and automatically "shuts down" your ability to push heavier weights to protect the joint from tearing or dislocation.

The Clinical Architecture: Charles Poliquin's Norms

At the Kulpinski Ljubišević Lab, we rely on the empirical data compiled by legendary Olympic strength coach Charles Poliquin. This diagnostic utility compares your secondary, auxiliary lifts against your Hub Lifts to accurately map out structural weak points.

Why is the Close-Grip Bench the Upper Body Hub?

Unlike the standard wide-grip bench press, the close-grip bench standardizes biomechanics. It precisely measures the prime pressing strength of the triceps and anterior deltoids while drastically reducing the false assistance of the lats and the shortening of the range of motion (ROM). All other upper-body presses and pulls are calculated relative to this hub.

• Chin-Ups (85% of Hub): Your back musculature must be capable of pulling nearly the same weight your chest can push. If it cannot, your shoulders internally rotate, your posture collapses, and pressing strength stalls.
• Rotator Cuff (9.8% of Hub): The most ignored muscle group in the gym. External rotation strength (measured at an 8-rep max) keeps the humerus centered in the socket. If this is missing, heavy horizontal pressing guarantees nerve impingement or tendon tears.

The Lower Body Architecture (Squat as Hub)

Your back squat dictates the integrity of your entire lower chassis.

• Front Squat (85% of Hub): Measures the strength of your quadriceps (specifically the VMO) and thoracic extension (upper back). If this falls below 85%, the issue is rarely your legs; it is the inability of your core and upper back to maintain an upright torso under load.
• Deadlift (120% of Hub): Your posterior chain (glutes and hamstrings) must be 20% stronger than your anterior chain. If your deadlift runs too far ahead of your squat (e.g., 150%), it is a clear clinical sign that your lower back has taken over the movement entirely to compensate for weak legs. The risk of disc herniation here is massive.

How to Apply This Data for Correction

This diagnostic is not designed to discourage you; it is designed to provide a precise roadmap. If the calculator returns a Deficit, your primary objective for the next mesocycle (4-6 weeks) must be correcting that specific point of failure.

Example: If your military press is only 45% of your bench, pause flat benching entirely. Dedicate your pressing volume exclusively to overhead work and shoulder stabilization until the proportion returns to the clinical norm (64%). This is the only way to unlock new, pain-free bench press PRs.