The spinal flexibility of Nigerian males: Some age-related normative data

Abstract

The spinal flexibility of 150 Nigerian males between the ages of 6 and 101 years was measured using a modified Schober's test, and sit-and-reach, trunk-extension and shoulder-lift flexibility tests. Subjects' spinal flexibility increased with age to 40 years, after which it decreased. Significant correlations (P < 0.001) were obtained between age and the spinal forward flexion (Schober's and sit-and-reach) tests, but the relationship between age and the extension (trunk extension and shoulder lift) tests was not statistically significant. Significant correlations (P < 0.001) were also found between the anthropometric indices and all the spinal flexibility measures. These findings suggest that age, height, weight and body mass have a significant effect on the spinal flexibility of Nigerian males. The norms derived in this study would be useful in assessing age-related limitations in back mobility among this population.