Endurance of low back musculature: normative data for adults.

Background And Objective: Lack of baseline values is a limitation in the quantification of physical performance testing of the low back muscles. The purpose of this study is to present an age and gender normative values for static back extensor muscles' endurance in adults.

Subjects And Methods: Five hundred and sixty one healthy adults aged between 19 to 67 years volunteered for this study.