The purpose of this investigation is to determine the relationship of core stability to core proprioception

As no previous research has been reported correlating the SPARQtm method of athletic performance with the McGill Side Bridge test and core joint position error, this study is designed as a pilot. The subject's core stability will be measured with the SPARQtm method of athletic performance and the McGill Side Bridge test for core stability. Core proprioception will be determined using the standard test for proprioception, Joint Position Error (JPE) testing, with the Skill Technologies motion capture device. All participants will receive the SPARQtm method of athletic performance testing, the McGill Side Bridge test for core stability and the core joint position error tests twice, one week apart.

Inclusion Criteria:

• college student, staff, or faculty members;
• History of thoracic / lumbar injuries for inclusion into the injured group.
• No history of thoracic / lumbar injuries for inclusion into the normal group.
• Ages 20 to 50
• History of previous athletic performance.

Exclusion Criteria:

• Previous lower extremity injury, surgery, visual or vestibular condition affecting balance
• Current acute illness that have an adverse effect on balance or core strength
• Local infection, injury or other malignancy
• Any unstable joints of the lower extremity or spine
• Any Spinal manipulation within 48 hours
• Prescription medication or supplement that affects blood pressure
• Pregnancy
• Diagnosis of severe hypertension (200-161/120-100 mmHg)
• Incapable of exercise for 15 minutes without hortness of breath
• Heart failure, kidney diseases and mental disorders

asymptomatic normals