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Feil, Katharina; Boettcher, Nicolina; Lezius, Franziska; Habs, Maximilian; Hoegen, Tobias; Huettemann, Katrin; Muth, Carolin; Eren, Ozan; Schoeberl, Florian; Zwergal, Andreas; Bayer, Otmar und Strupp, Michael (2016): Clinical evaluation of the bed cycling test. In: Brain and Behavior, Bd. 6, Nr. 5, e00445 [PDF, 229kB]

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Abstract

Objective: Additionally to the forearm rolling test to detect mild unilateral upper limb dysfunction, the bed cycling test (BCT) for detection of mild to moderate lower limb dysfunction was developed, evaluated and compared to the leg holding test. Methods: In a prospective observer-blinded study, 60 patients with MRI/CT-proven focal cerebral hemisphere lesions and a mild to moderate unilateral paresis of the lower limb (graduated MRC 3-4/5), and 60 control persons with normal imaging were examined and filmed. Nine observers blinded to the diagnosis evaluated these videos. The sensitivity, specificity and the positive and negative predictive values of the clinical tests were analyzed. Results: The observers gave a correct evaluation of BCT in 35.5% of all patients with focal cerebral lesions compared to 26.0% for the leg holding test. On the other hand, observers had false negative results in 29.1% of cases with BCT and 44.7% with leg holding test. In 36.7% of patients, only BCT was pathological while leg holding test was unremarkable. The sensitivity of the combination of both tests was 0.68 (95% CI 0.61-0.75). The BCT is more sensitive (64.3%) than leg holding test (46.2%) while the specificity of leg holding test (85.6%) is higher than of BCT (70.1%) to detect a cerebral lesion affecting the lower limb. The inter-rater variability is high with no differences comparing different types of clinical experience. Conclusions: The BCT is a useful additional clinical bedside test to detect subtle unilateral cerebral lesions. The BCT is easy to perform and can be added to the routine neurological examination.

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