In Brief Purpose: The aim of this study was to investigate whether muscle strength and functional exercise capacity (FEC) influence motor performance in children with generalized joint hypermobility. Methods: Forty-one children (mean age: 8.1 years) with symptomatic generalized hypermobility were included. Motor performance was assessed using the Körperkoordinationstest für Kinder (KTK) and the Movement Assessment Battery for Children. Muscle strength and FEC were measured with a handheld dynamometer and the 6-minute walk test. Results: Only muscle strength was significantly positively associated with motor performance on the KTK. FEC was significantly decreased. Children's scores on the KTK were significantly lower (p < 0.001) compared with scores on the Movement Assessment Battery for Children. Conclusions: The KTK is a more sensitive tool for detecting motor problems in children with generalized joint hypermobility, but is not associated with FEC. Along with the KTK, the 6-minute walk test can be used to independently assess and evaluate FEC. The authors found the Körperkoordinationstest für Kinder was more sensitive than the Movement Assessment Battery for Children for detecting movement problems in children with generalized joint hypermobility and recommend the former test as an appropriate tool to assess motor performance and evaluate treatment outcomes for this population.
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Kleef et al. (2009) studied this question.
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