Strength, muscle symmetry, and flexibility in young female idiopathic scoliotics.
cross_sectional · Level IV
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Abstract
Application of previous findings regarding muscle strength and function in scoliotics suggests that curvature might result from unbalanced pull of spinal muscles oriented transversely. This study investigated the role of muscle strength and strength symmetry in 48 young female scoliotics and 48 age-matched controls. The subjects were divided into three age levels: 11 and 12, 13, and 14 and 15 years of age. Scoliotics were weaker than the nonscoliotics only for shoulder strength in the two older age levels. For all subjects combined, as well as each group and age level, the dominant versus nondominant strength differences were significantly greater than zero; however, the magnitudes of the differences were not different between any of the groups. Nonscoliotics displayed significantly greater trunk flexibility than scoliotics. J Orthop Sports Phys Ther 1991;14(4):144-148.