Mobility vs. Flexibility
It's important to understand the difference between being flexible and being mobile. Flexibility is the passive length of a muscle; mobility is your ability to move a joint through its full range of motion. For the active pickleball player, maintenance work on your non-playing days is what builds structural resilience.[1]
These exercises focus on the areas that get most restricted by the repetitive nature of the sport. By performing them consistently, you are essentially 'resetting' your joints for the next match.
The 90/90 Rule
One of the most important exercises in this list is the 90/90 Hip Stretch. Most pickleball injuries in the knee and lower back are actually compensation injuries.
When your hips lose their ability to rotate internally, your body forces that rotation into the next available joints: the knee and the lumbar spine.[2]
Neither of those joints is designed to handle that rotational load. By keeping your hips mobile, you protect your entire kinetic chain and keep the stress where it belongs, in your active muscles.
Training the Ankle
The ankle is the foundation of every move you make on the court. If your ankle dorsiflexion (the ability to bring your toes toward your shin) is restricted, your body will find that range elsewhere, often by 'collapsing' the arch of your foot or twisting your knee.[3]
The Knee-to-Wall Ankle Mobs are a simple way to test and improve this range daily. Maintaining this mobility is one of the best predictors of whether you'll walk off the court or be carried off after a lateral ankle sprain.