OBJECTIVE: To describe gait deficits and their association with lower-extremity muscle strength in children with juvenile idiopathic inflammatory myopathies (IIM). DESIGN: Cross-sectional, descriptive study. SETTING: Clinical research center. PARTICIPANTS: Consecutive sample of 25 ambulatory children diagnosed with juvenile IIM. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Manual muscle test (MMT) of bilateral hip flexor, extensor, and abductor; knee extensor; and ankle plantarflexor strength, all measured on a 0- to 10-point scale and summary strength measures. Video-based movement analysis to determine walking speed; gait cycle time; right and left step time; stride length; right and left step length; and stance, swing, and double-limb support phase durations. RESULTS: Walking speed (1.03+/-0.27 m/s) was reduced because of shortened stride lengths (1.03+/-0.21 m) more than prolonged gait cycle times (1.05+/-0.22s). Walking speed highly correlated with the number of muscle groups weaker than grade 7 out of 10 (r=-.89) and the strength of the hip flexors (r=.85). CONCLUSIONS: Lower-extremity strength measures, including MMT scores of individual muscle groups and the number of weak muscle groups, were predictive of gait limitations in children with juvenile IIM.
OBJECTIVE: To describe gait deficits and their association with lower-extremity muscle strength in children with juvenile idiopathic inflammatory myopathies (IIM). DESIGN: Cross-sectional, descriptive study. SETTING: Clinical research center. PARTICIPANTS: Consecutive sample of 25 ambulatory children diagnosed with juvenile IIM. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Manual muscle test (MMT) of bilateral hip flexor, extensor, and abductor; knee extensor; and ankle plantarflexor strength, all measured on a 0- to 10-point scale and summary strength measures. Video-based movement analysis to determine walking speed; gait cycle time; right and left step time; stride length; right and left step length; and stance, swing, and double-limb support phase durations. RESULTS: Walking speed (1.03+/-0.27 m/s) was reduced because of shortened stride lengths (1.03+/-0.21 m) more than prolonged gait cycle times (1.05+/-0.22s). Walking speed highly correlated with the number of muscle groups weaker than grade 7 out of 10 (r=-.89) and the strength of the hip flexors (r=.85). CONCLUSIONS: Lower-extremity strength measures, including MMT scores of individual muscle groups and the number of weak muscle groups, were predictive of gait limitations in children with juvenile IIM.
Authors: Lisa G Rider; Adrienne L Yip; Iren Horkayne-Szakaly; Rita Volochayev; Joseph A Shrader; Maria L Turner; Heidi H Kong; Minal S Jain; Anna V Jansen; Chester V Oddis; Thomas A Fleisher; Frederick W Miller Journal: Clin Exp Rheumatol Date: 2014-07-28 Impact factor: 4.473
Authors: M O Harris-Love; J A Shrader; D Koziol; N Pahlajani; M Jain; M Smith; H L Cintas; C L McGarvey; L James-Newton; A Pokrovnichka; B Moini; I Cabalar; D J Lovell; R Wesley; P H Plotz; F W Miller; J E Hicks; L G Rider Journal: Rheumatology (Oxford) Date: 2008-12-11 Impact factor: 7.580
Authors: Barbara A Springer; Ellen Levy; Charles McGarvey; Lucinda A Pfalzer; Nicole L Stout; Lynn H Gerber; Peter W Soballe; Jerome Danoff Journal: Breast Cancer Res Treat Date: 2010-02 Impact factor: 4.872