Assessment of a Special Modality of Back Muscles Strengthening for Postural Deformations in Parkinsonian Patient

This study tests a specific back muscle strengthening exercise program to correct posture problems — such as forward lean or lateral tilt — that are common in Parkinson's disease and related conditions. The goal is to improve posture and quality of life without medication changes. **You may be eligible if...** - You have Parkinson's disease or an atypical parkinsonian condition - You are 18 or older and have postural problems (a notable forward lean or sideways tilt of the spine) - Your Parkinson's symptoms are in the mild-to-moderate range (UPDRS score 10–25) - Your medication has been stable for at least 8 weeks - Your cognition is intact (mini-mental status score above 25) **You may NOT be eligible if...** - You have a separate neurological or rheumatic condition affecting the spine - You have had prior trunk surgery - You have a deep brain stimulator - You have unstable heart disease Talk to your doctor to see if this trial is right for you.