Before revision:  MA: r>=0.90, p<0.001), indicating suitability for the reasonably accurate prediction of maximal trunk extensor strength, segmental loading and trunk muscle activity in children and adolescents.
After revision:  MA: r>=0.90, p<0.001), indicating suitability for the reasonably accurate prediction of maximal trunk muscle strength, segmental loading and trunk muscle activity in children and adolescents.