The Perometer can be used with high reliability to measure hand volume but caution should be exercised when data are compared with measures derived from the water volumetry method.
The effect of dorsiflexion was investigated on range of passive straight leg raising (SLR) and on inter-rater reliability with 35 patients reporting unilateral lumbar pain with or without ipsilateral leg symptoms. Ranges of SLR and SLR with dorsiflexion (SLR/DF) to onset of lumbar or leg symptoms (P1) were independently measured using a gravity goniometer by pairs of different physiotherapists at two clinics. Dorsiflexion significantly reduced SLR range by a mean of 9 degrees across both samples. Similar high inter-rater reliability was found for SLR and SLR/DF in both pairs of physiotherapists. These data show that SLR and SLR/DF are reliable procedures when measured to P1 in the clinical environment and support previous findings that dorsiflexion reduces range of SLR.
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